Academic literature on the topic 'Rice – Climatic factors'
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Journal articles on the topic "Rice – Climatic factors"
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Deng, Yun, Cunliang Cao, and Shouxue Chen. "Research on correlation analysis and prediction model of agricultural climate factors based on machine learning." MATEC Web of Conferences 336 (2021): 07016. http://dx.doi.org/10.1051/matecconf/202133607016.
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This article uses machine learning technology to analyze the correlation of climate factors that affect crop yields, and conduct prediction and comprehensive evaluation to guide agricultural production. This paper selects early rice crops in Guangxi as the research object. Based on the climatic data of early rice planting areas in Guangxi from 1990 to 2017, a cart decision tree is constructed to generate a random forest model to analyze the correlation between early rice yield and climatic factors in each growth period, and obtain the various growth periods The ranking of the importance of climatic factors on the yield, thus forming the basis for calculating the weights of the climatic factors in each growth period of early rice; based on the climatic data in Guilin, Guangxi from 2008 to April to July 2017, predicted by the long and short-term memory network Guilin's various climate data from April to July 2018.
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Zhang, Lijuan, Jinxia Wang, Tianhe Sun, and Xialin Wang. "Impacts of Climate Change on the Mean and Variance of Indica and Japonica Rice Yield in China." Agronomy 12, no. 12 (December 3, 2022): 3062. http://dx.doi.org/10.3390/agronomy12123062.
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The overall goal of this study was to examine the impacts of climate change on the mean and variance of rice yields in China by using historical climate and crop data. An econometric model was established to estimate Just–Pope stochastic production functions and identify the potential impacts of climate change on the mean and variance of rice yields by type, keeping other factors constant. Based on the estimated production functions, the contribution rate of climatic factors to rice yield was then assessed by conducting the growth accounting of yields over the past 30 years. The results showed that both the mean rice yield and the yield variability were influenced by changes in the mean climate conditions and climatic variance. In the future, the impacts of climate change on rice yields will depend on local regions’ present climatic conditions. The results have implications for improving the adaptation capacity of rice production.
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Quevedo Amaya, Yeison Mauricio, Jose Isidro Beltrán Medina, and Eduardo Barragán Quijano. "Identification of climatic and physiological variables associated with rice (Oryza sativa L.) yield under tropical conditions." Revista Facultad Nacional de Agronomía Medellín 72, no. 1 (January 1, 2019): 8699–706. http://dx.doi.org/10.15446/rfnam.v72n1.72076.
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Rice crop productivity is influenced by climatic conditions such as solar radiation, temperature, and water availability during its vegetative and reproductive stage. In Colombia, rice cultivation is carried out throughout the year; so, it is necessary to identify the sowing dates where high yields are obtained, and which physiologic and climatic factors significantly influence them. Therefore, this research aimed to identify the key climatic and physiological factors that allow maximizing the yield and maintaining good productivity in sowing dates with optimal and deficient environmental conditions, respectively. The experiment was carried out in a rice producing region in northern of Tolima, Colombia from 2015 to 2016. Ten sowing dates were established, with a randomized complete block design in a divided strips arrangement. For each sowing date, climatic conditions were tracked, and growth, development, and yield of rice plant were evaluated. Also, the photosynthetic rate was assessed on five sowing dates. Results showed that physiologic factors that have more relation with crop yield are plant height, leaf area index and dry mass accumulation between phenological stages 37 and 49; whereas the unique climatic factor, that was highly related to yield, was solar radiation between phenological stages 51 to 77. Furthermore, when the optimum values of each variable were reached, a yield higher than 9,500 kg ha-1 was achieved. No relation was observed between the photosynthesis rate of at leaf level and yield.
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Karmokar, Provash Kumar, Mahendran Shitan, A. B. M. Rabiul Alam Beg, and Md Idris Ali. "Impact of Some Climatic Variables on the Yields of Boro Rice in Bangladesh." American Journal of Agricultural Science, Engineering, and Technology 2, no. 6 (March 29, 2017): 12–19. http://dx.doi.org/10.54536/ajaset.v2i6.14.
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Bangladesh is primarily an Agriculture based country and its economy largely depends on theagriculture. Weather and climate are key determinants of the productivity of crops grown inan agrarian country like Bangladesh. Boro rice constitutes a large share in the domestic foodgrain of the country. Sometimes its production affected by some climatic factors. Therefore,the objective of this research was to determine the likely climatic factors for Boro riceproduction in Bangladesh. In this study we employed traditional OLS method and recentBootstrap technique to identify the influential climatic factors on Boro rice production. Ourstudy revealed that the considered variables rainfalls (RAIN), maximum temperature (MAX),minimum temperature (MIN) and wind speed (WIND) have significant effect on Boro riceproduction both by OLS and Bootstrap method. Bootstrap method exhibits lower standarderrors in comparison to the OLS method indicating that this estimate could be useful in Bororice production of Bangladesh. The messages from this study could be useful for the policymakers of the country.
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JAIONTO KARMOKAR, M. AMINUL ISLAM, M. RAKIB HASSAN, and M.M. BILLAH. "Impact of seasonal climatic variability on rice yield in Bangladesh." Journal of Agrometeorology 22, no. 2 (November 6, 2021): 165–71. http://dx.doi.org/10.54386/jam.v22i2.157.
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In Bangladesh, 75% of the total cultivable area is under rice cultivation producing 25 million tons of rice and plays a vital role in the country’s GDP. The climatic variability is playing an important role in affecting the rice production. In this study, the impact of climatic variability (average maximum temperature (aMaxTemp), average minimum temperature (aMinTemp) and average rainfall (aRainfall)) on rice yield was determined in two different regions (northern and southern) of Bangladesh.The variability of rice yield and climate factors was determined by using the Ordinary Least Square (OLS) method. The data was analyzed over the 44-years period (1971 to 2014) in order to estimate the magnitude of these fluctuations statistically and graphically. We observed that the climate variables had significant effect on rice yield that varies among three rice crops (e.g., Aus, Aman, and Boro rice). We observed that, aMaxTemp has positive effects for Aus and Aman rice yield but negative effect on Boro rice yield. On the other hand, aMinTemp has negative effects on Aus and Aman rice yield but has positive effect on Boro rice yield. The aRainfall has a positive relationship with all rice yields in both the regions.
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SHI, Quan-Hong, Jian-Gang LIU, Zhao-Hua WANG, Ting-Ting TAO, Fu CHEN, and Qing-Quan CHU. "Change of Rice Yield Gaps and Influential Climatic Factors in Southern China." ACTA AGRONOMICA SINICA 38, no. 5 (August 23, 2013): 896–903. http://dx.doi.org/10.3724/sp.j.1006.2012.00896.
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Guntukula, Raju, and Phanindra Goyari. "Climate Change Effects on the Crop Yield and Its Variability in Telangana, India." Studies in Microeconomics 8, no. 1 (May 29, 2020): 119–48. http://dx.doi.org/10.1177/2321022220923197.
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This study has examined the effects of climatic factors on mean yields and yield variability of four primary crops (rice, cotton, jowar and groundnut) in Telangana state by applying the Just and Pope production function over a period of 1956–2015. Using the three-stage feasible generalised least squares estimation procedure, we have estimated the production function of four crops. The empirical results have revealed that the effects of changes in climatic factors vary among crops under study. Maximum temperature has a significant adverse effect on rice, cotton and groundnut yields. Minimum temperature has a substantial positive effect on rice, cotton and groundnut. Further, rainfall is adversely related to cotton and groundnut yields. Maximum temperature has appeared as a risk-reducing factor for all study crops while minimum temperature as a risk-enhancing factor for rice, cotton and jowar. Lastly, rainfall has been found as a risk-enhancing factor for rice and groundnut whereas it is a risk-reducing factor for jowar and cotton. Results from the study have important implications on how Telangana’s farming sector will adapt to climate variability and change for sustainable agricultural development. JEL Codes: C23, Q18, Q51, Q54
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Guo, Yahui, Wenxiang Wu, Yumei Liu, Zhaofei Wu, Xiaojun Geng, Yaru Zhang, Christopher Robin Bryant, and Yongshuo Fu. "Impacts of Climate and Phenology on the Yields of Early Mature Rice in China." Sustainability 12, no. 23 (December 4, 2020): 10133. http://dx.doi.org/10.3390/su122310133.
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Phenological variables are closely correlated with rice (Oryza sativa L.) yields as they play important roles in influencing and controlling the carbon allocations between plant organs, but their impacts on rice yields and their relative importance compared with climatic variables are not yet well investigated. In this study, the impacts and the relative importance of climatic and phenological variables on the yields of early mature rice were assessed using the trial data from 75 agricultural stations across China, spanning from 1981–2010. We found that both daily maximum (Tmax) and daily minimum (Tmin) temperatures during the growing season (from transplanting to maturity) increased significantly, while sunshine duration (SD) and precipitation (Prep) did not change significantly. The average transplanting date was advanced by 3.18 days/decade, and the heading (maturity) dates were delayed by 2.47 (4.55) days/decade, with yields significantly increased by 9.65 g/m3 per decade across all sites. Partial correlation coefficients between most phenological variables and rice yields were negative, whereas most of the climatic variables were positively correlated with rice yields. The average of partial correlation coefficients between transplanting, heading, and maturity dates and rice yields were −0.10, −0.15, and −0.01, respectively, and the average of coefficients between Tmax, Tmin, SD, and Prep and rice yields were 0.08, 0.02, 0.12, and −0.05, respectively. Interestingly enough, phenological variables were the dominating influencing factors on rice yields at 63% of the sites, suggesting that the relative importance of phenology to rice yields may be even higher than that of climate. The climatic variables were closely correlated with rice yields as they are fundamental growth materials for crops, and phenological variables strongly influenced the growth and development of rice. Our results highlight that phenology should be precisely evaluated in crop models to improve the accuracy of simulating their response to climate change. Furthermore, due to limited understanding of phenological processes, manipulative experiments are urgently needed to comprehensively improve our understanding of rice phenology and rice yield response to ongoing climate change.
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Zhao, Weixing, Jieming Chou, Jiangnan Li, Yuan Xu, Yuanmeng Li, and Yidan Hao. "Impacts of Extreme Climate Events on Future Rice Yields in Global Major Rice-Producing Regions." International Journal of Environmental Research and Public Health 19, no. 8 (April 7, 2022): 4437. http://dx.doi.org/10.3390/ijerph19084437.
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Under the dual impacts of climate change and COVID-19, there are great risks to the world’s food security. Rice is one of the three major food crops of the world. Assessing the impact of climate change on future rice production is very important for ensuring global food security. This article divides the world’s main rice-producing regions into four regions and uses a multivariate nonlinear model based on historical economic and climatic data to explore the impacts of historical extreme climatic events and economic factors on rice yield. Based on these historical models, future climatic data, and economic data under different shared socioeconomic pathways (SSPs), the yields of four major rice-producing regions of the world under different climate change scenarios (SSP126, SSP245, and SSP585) are predicted. The research results reveal that under different climate change scenarios, extreme high-temperature events (Tx90p) and extreme precipitation events (Rx5day, R99pTOT) in the four major rice-producing regions have an upward trend in the future. Extreme low-temperature events (Tn10p) have a downward trend. In the rice-producing regions of Southeast Asia and South America, extreme precipitation events will increase significantly in the future. The prediction results of this model indicate that the rice output of these four major rice-producing regions will show an upward trend in the future. Although extreme precipitation events will have a negative impact on rice production, future increases in rice planting areas, economic development, and population growth will all contribute to an increase in rice production. The increase in food demand caused by population growth also brings uncertainty to global food security. This research is helpful for further understanding climate change trends and risks to global rice-production areas in the future and provides an important reference for global rice-production planning and risk management.
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Khandker, Varsha, and Indrajit Thakurata. "Factors encouraging complete adoption of agricultural technologies." Journal of Agribusiness in Developing and Emerging Economies 8, no. 2 (June 4, 2018): 270–87. http://dx.doi.org/10.1108/jadee-05-2016-0037.
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Purpose Hybrid rice is considered as one of the technologies having the potential to push the production frontier to meet the growing demand for rice in India. The technology was introduced in India in 1994 but is yet to see widespread adoption. The purpose of this paper is to identify the factors that influence the partial/complete adoption of hybrid rice technology by the farmers in India. This study also assesses the factors behind difference in the share of land allocated to hybrid rice cultivation by farmers. Design/methodology/approach The study employs a Tobit model to evaluate the impact of factors related to technology, farmer, farm and geographical location on the decision to adopt hybrid rice. Data for this study are compiled from surveys of 441 hybrid rice growing farmers across 3 Indian states conducted during 2012-2013. Findings The paper finds that farmers with smaller landholdings, higher education and higher experience of growing hybrid rice are more likely to be complete adopters. Farmers reporting good demand for hybrid rice output and availability of subsidy on hybrid rice seeds also have higher probability of being complete adopters. However, the availability of hybrid rice seeds in government outlets and cultivating multiple kharif crops are negatively related to the extent of hybrid rice adoption. The results suggest insignificant impact of age, family size, ownership of cattle and machinery on the adoption level of hybrid rice by the farmers. Research limitations/implications Although the sample for this study has been collected from three states with different agro-climatic zones and productivity, the results cannot be generalized for other states. Originality/value There is a great potential to increase the area under hybrid rice cultivation in India. This study is one of the first attempts to look at the adoption levels of hybrid rice in India and determine the factors which might be hindering the complete adoption of the technology. Focusing on the factors positively related to complete adoption can help in enhancing the area under hybrid rice and similar approach can be used for other new agricultural technologies in the developing country context.
Dissertations / Theses on the topic "Rice – Climatic factors"
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Ward, Rachelle Maree. "Potential impact of temperature and carbon dioxide levels on rice quality." University of Sydney, 2007. http://hdl.handle.net/2123/2209.
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Doctor of PhilosophyA rice grain is composed of 90% starch, and amylose contributes to up 30% of the starch with the remainder as amylopectin. The structure of starch largely defines the quality of rice, yet the methods to characterise starch have not been reviewed recently. This thesis begins by using the simplest form of starch, debranched amylopectin, to detail and apply the principles of molecular weight theory using Size Exclusion Chromatography (SEC) to illustrate that without correct calibration the molecular weight distribution of starch has been underestimated. In contrast to amylopectin, amylose is difficult to isolate from flour without causing irrevocable damage, is unstable in an aqueous system and is believed to be impossible to debranch with isoamylase. Here an amylose-rich fraction was extracted directly from flour using hot water to avoid the structural–damaging isolation techniques used previously. The ability of isoamylase to debranch the amylose was shown through traditional methods of controlled enzyme degradation of the starch, ensuring that association of chains did not hinder access to the enzyme activation site, and through the contrast of 1H NMR spectra before and after the debranching event. Further, it was shown that 20% of carbohydrate was not recoverable from the SEC, and the unrecoverable carbohydrate is likely to be of high molecular weight and with long chains. High temperatures during the grain filling period are known to impede on the rice quality of one classification of non-waxy varieties. That hypothesis was rigorously examined by growing rice from a wide genetic background in three temperature regimes, followed by analysis of amylose at a functional, structural and synthesis level. From that phenotypic data, the rice varieties could be divided into three distinct groups – two of poorer quality in an increasingly warmer climate. Candidate single nucleotide polymorphisms (SNPs) have been identified, and a mechanism proposed, to explain the phenotypes. Linking a phenotype to a SNP allows the opportunity for wide scale screening of varieties to predict the quality of rice in an increasing warmer environment. Rice quality has the potential to change with elevated carbon dioxide levels, both alone and with increased temperature. Here, the quality traits of varieties grown in four combinations of temperature and carbon dioxide levels were assessed. The negative impact of temperature on grain quality was unable to be overcome by an increase in carbon dioxide in all but one quality. Chalk is the undesirable opaque belly of a grain that defines the market price of the grain. In elevated carbon dioxide, the proportion of grains containing a high amount of chalk per grain which will increase the market value of the grain and may help to alleviate the burden of climate change on rice farmers.
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Ward, Rachelle Maree. "Potential impact of temperature and carbon dioxide levels on rice quality." Thesis, The University of Sydney, 2007. http://hdl.handle.net/2123/2209.
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A rice grain is composed of 90% starch, and amylose contributes to up 30% of the starch with the remainder as amylopectin. The structure of starch largely defines the quality of rice, yet the methods to characterise starch have not been reviewed recently. This thesis begins by using the simplest form of starch, debranched amylopectin, to detail and apply the principles of molecular weight theory using Size Exclusion Chromatography (SEC) to illustrate that without correct calibration the molecular weight distribution of starch has been underestimated. In contrast to amylopectin, amylose is difficult to isolate from flour without causing irrevocable damage, is unstable in an aqueous system and is believed to be impossible to debranch with isoamylase. Here an amylose-rich fraction was extracted directly from flour using hot water to avoid the structural–damaging isolation techniques used previously. The ability of isoamylase to debranch the amylose was shown through traditional methods of controlled enzyme degradation of the starch, ensuring that association of chains did not hinder access to the enzyme activation site, and through the contrast of 1H NMR spectra before and after the debranching event. Further, it was shown that 20% of carbohydrate was not recoverable from the SEC, and the unrecoverable carbohydrate is likely to be of high molecular weight and with long chains. High temperatures during the grain filling period are known to impede on the rice quality of one classification of non-waxy varieties. That hypothesis was rigorously examined by growing rice from a wide genetic background in three temperature regimes, followed by analysis of amylose at a functional, structural and synthesis level. From that phenotypic data, the rice varieties could be divided into three distinct groups – two of poorer quality in an increasingly warmer climate. Candidate single nucleotide polymorphisms (SNPs) have been identified, and a mechanism proposed, to explain the phenotypes. Linking a phenotype to a SNP allows the opportunity for wide scale screening of varieties to predict the quality of rice in an increasing warmer environment. Rice quality has the potential to change with elevated carbon dioxide levels, both alone and with increased temperature. Here, the quality traits of varieties grown in four combinations of temperature and carbon dioxide levels were assessed. The negative impact of temperature on grain quality was unable to be overcome by an increase in carbon dioxide in all but one quality. Chalk is the undesirable opaque belly of a grain that defines the market price of the grain. In elevated carbon dioxide, the proportion of grains containing a high amount of chalk per grain which will increase the market value of the grain and may help to alleviate the burden of climate change on rice farmers.
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Aben, Silvestre K., of Western Sydney Hawkesbury University, Faculty of Science and Technology, and Centre for Horticulture and Plant Sciences. "Influence of elevated CO2 partial pressure on early growth and development of rice." THESIS_FST_HPS_Aben_S.xml, 2000. http://handle.uws.edu.au:8081/1959.7/218.
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The rise in atmospheric CO2 partial pressures that is predicted for the 21st Century is likely to increase productivity and alter nutrient of C3 crop plants. Consequently, physiological data on plant growth and nutrition at elevated CO2 are required, because these data underpin simulation models, which are needed for management of crops under the CO2 scenario for the mid to late 21st Century.In particular, information is required about management of nitrogen(N) fertilisation because this mineral nutrient plays a central role in the growh of many crops. Rice was chosen as a model plant because of its widespread consumption throughout the world and its responsiveness to CO2 and N fertilisation. There were three major hypotheses: first, that early exposure of rice plants to high CO2 is required to achieve the maximum growth and tillering response; secondly, that early increases in growth and tillering at high CO2 are associated with the phytohormone, ethylene; and thirdly, that growth at elevated CO2 decreases leaf N concentrations required to support maximum dry mass production and photosynthetic rates (critical concentrations).Several tests and experiments were conducted and results noted. It is likely that grain yield will be greater as the atmospheric CO2 partial pressure rises even when N supplies are low, providing that high CO2 does not cause accelerated tiller abortion at low N.Doctor of Philosophy (PhD)
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Oliveira, Catarina Chemetova Cravo Branco de. "Influence of abiotic stress factors on VOCs emission from Portuguese rice paddy fields: relation with increased climate change." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/10736.
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Dissertação para obtenção do Grau de Mestre em
Engenharia do Ambiente Perfil de Gestão de Sistemas AmbientaisPlants are emitting chemical-signals to the atmosphere in response to stress factors - Volatile Organic Compounds (VOCs). VOCs have higher influence on atmosphere chemistry: they are acting as photochemical precursors in tropospheric ozone formation. Present work studies VOCs emission released by rice (Oryza sativa L cv. Aríete) cycle in paddy fields, in aleatory schemes with three replicates, in two separate soil plots with different textures (silty clay and loamy sand), studying open field conditions and open top chambers (OTCs) under influence of treatments with induced abiotic stress (increase temperature and simultaneously temperature and CO2 atmospheric concentration enhancement). VOCs were extracted from plant by solid phase micro extraction (SPME) and stem distillation extraction (SDE), and analyzed by gas chromatography coupled to mass spectrometry (GC/MS) using two GC capillary columns with different polarities, one non-polar (DB-5) and other polar (DB-WAX). A total of 33 VOCs using a non-polar column and 22 VOCs using a polar column, in both set of results were identified the three main classes of compounds: green leaf volatiles (GLV), monoterpenes and sesquiterpenes. Between rice cycle VOCs vary their trend and on vegetative stage were observed more VOCs, followed by ripening and lesser on reproductive. Silty clay soil demonstrated higher amount of VOCs released if compared with loamy sand texture. Between OTCs, more compounds were released by increasing temperature than simultaneously temperature and CO2. In Intergovernmental Panel for Climate Change (IPCC) scenarios with emergent trend of increasing temperature and CO2 atmospheric concentration, two effects are inherent to rice VOCs emission, one negative with higher emission related with temperature and other positive with less emission associated CO2. Field data measurements addictions in air quality models will help achievements of realistic previsions and better understand the effect of climate change in air quality on a global scale.
Portuguese Foundation for Science and Technology; FCT-UNL and partners from INIAV and UTAD, on a project named PTDC/AGR-AAM/102529/2008
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Elliott, Patrick. "Evaluating Sea-Level Rise Hazards on Coastal Archaeological Sites, Trinity Bay, Texas." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1157575/.
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This study uses the predictive modeling program Sea-Levels Affecting Marshes Model (SLAMM) to evaluate sea-level rise hazards, such as erosion and inundation, on coastal archaeological sites with a vertical rise of sea level of .98 meters from 2006 to 2100. In total 177 archaeological site locations were collected and georeferenced over GIS outputs maps of wetlands, erosion presence, surface elevation, and accretion. Wetlands data can provide useful information about characteristics of the wetland classes, which make a difference in the ability for coastal archaeological sites to combat sea level rise. Additionally, the study evaluated predicted erosion of archaeological sites by presence or absence of active erosion on a cell-by-cell basis. Elevation map outputs relative to mean tide level allowed for a calculation of individual archaeological site datums to use NOAA tidal databases to identify the potential for their inundation. Accretion maps acquired from the SLAMM run determined the potential for the archaeological site locations to combat rising sea levels and potentially provide protection from wave effects. Results show that the most significant hazard predicted to affect coastal archaeological sites is inundation. Approximately 54% of the total archaeological sites are predicted to be inundated at least half the time by 2100. The hazard of erosion, meanwhile, is expected to affect 33% of all archaeological sites by the end of the century. Although difficult to predict, the study assumes that accretion will not be able to keep pace with sea-level rise. Such findings of hazards prove that SLAMM is a useful tool for predicting potential effects of sea-level rise on coastal archaeological sites. With its ability to customize and as it is complementary, it provides itself not only an economical choice but also one that is adaptable to many scenarios.
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Chen, Yu-Wen, and 陳毓雯. "Effect of Climatic Factors on Changesof Irrigation Demand for Rice Paddies." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/40310469905841308898.
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碩士國立成功大學
地球科學系碩博士班
97
Even though the average annual precipitation of Taiwan is as high as 2,500 millimeters; such that to be regarded as the top three among all countries in the world; Taiwan is nevertheless also considered as the 18th water poverty country in the world due to the sharing amount of water resources for each person of the country can only be as much as 1/7 of the world’s mean. The agricultural water demand consumes 70% of the water resources in Taiwan. As to how may we effectively control the irrigation water is indeed an important issue. Crops water requirements are closely related to the climatic conditions. After the 18th century, the industrial revolution, greenhouse gas emissions are causing a rise on the global temperature. This global temperature rise is not only changing the hydrological cycle but also the meteorological structure, e.g., the precipitation, the humidity, the sunshine, the wind speed, and the evapotranspiration. If the future climatic conditions keep changing, the irrigation demand of water will be affected so as the portion of water resources sharing. This study uses firstly the long term (from 1897 to 2008) meteorological records from Tainan weather station including the relative humidity, the wind velocity, the precipitation, the sunshine duration; length of the records is about 112 years. The meteorological data were analyzed respectively to identify the variation tendency of each meteorological parameter and to test their long-enduring characteristics; in order to understand the influential level of climate change on Tainan regional. The results demonstrate that temperature of Tainan area has an averagely rising tendency; among all, temperature of August has the most remarkable rise, which is as high as 18.1℃ over the last 100-yearr period. Other meteorological records such as the relative humidity, the precipitation, the sunshine duration, the wind speed are having an averagely decreasing trend. Simulating the meteorological conditions for content of CO2, based on the regression analysis of its historical records, to be increased two times, the temperature may then be increased for 1.75℃~4.73℃, and the rice paddy irrigation water requirements in the first and second period may as well as be increased for about 3.00%~4.60%and5.91%~10.96%.
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Seneweera, Saman P., University of Western Sydney, of Science Technology and Environment College, and School of Horticulture. "Influence of high CO2 on growth and development of rice." 1995. http://handle.uws.edu.au:8081/1959.7/15878.
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The CO2 concentration in the atmosphere is rising dramatically each year. Increases are certain to influence growth of C3 plants. This thesis focuses on the growth and development of rice (Oryza sativa L. cv. Jarrah).The major questions addressed in this thesis were whether elevated atmospheric CO2 concentrations would : 1/ increase grain yield where the soil was flooded or unflooded under conditions of varying phosphorus supply; 2/ change the timing of development; 3/ alter the partitioning of dry weight and nutrients between the roots and shoots; and, 4/ influence grain quality. The mechanisms underlying growth and developmental changes at elevated CO2 were also investigated. After experimentation, it is concluded that the grain yield of rice will increase as the atmospheric CO2 concentration rises even when phosphorus supplies are low. The largest response to rising atmospheric CO2 concentrations will occur under dryland conditions but increases of up to 60 per cent are likely in flooded rice. Importantly, there is likely to be a reduction in the life cycle of rice crops as the CO2 concentration rises. This would have the advantage that more crops could be sown in one season. The quality of the rice grain produced at high CO2 concentrations will also change, with milling quality appearance likely to improve. The cooked rice will be firmer. Experiments also showed that rice grown in flooded soil at different CO2 concentrations is an excellent system for investigating the control of plant growth and development, particularly the influence of hormones.Doctor of Philosophy (PhD)
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Aben, Silvestre K. "Influence of elevated CO2 partial pressure on early growth and development of rice." Thesis, 2000. http://handle.uws.edu.au:8081/1959.7/218.
Full textAbstract:
The rise in atmospheric CO2 partial pressures that is predicted for the 21st Century is likely to increase productivity and alter nutrient of C3 crop plants. Consequently, physiological data on plant growth and nutrition at elevated CO2 are required, because these data underpin simulation models, which are needed for management of crops under the CO2 scenario for the mid to late 21st Century.In particular, information is required about management of nitrogen(N) fertilisation because this mineral nutrient plays a central role in the growh of many crops. Rice was chosen as a model plant because of its widespread consumption throughout the world and its responsiveness to CO2 and N fertilisation. There were three major hypotheses: first, that early exposure of rice plants to high CO2 is required to achieve the maximum growth and tillering response; secondly, that early increases in growth and tillering at high CO2 are associated with the phytohormone, ethylene; and thirdly, that growth at elevated CO2 decreases leaf N concentrations required to support maximum dry mass production and photosynthetic rates (critical concentrations).Several tests and experiments were conducted and results noted. It is likely that grain yield will be greater as the atmospheric CO2 partial pressure rises even when N supplies are low, providing that high CO2 does not cause accelerated tiller abortion at low N.
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Seneweera, Saman P. "Influence of high CO2 on growth and development of rice." Thesis, 1995. http://handle.uws.edu.au:8081/1959.7/15878.
Full textAbstract:
The CO2 concentration in the atmosphere is rising dramatically each year. Increases are certain to influence growth of C3 plants. This thesis focuses on the growth and development of rice (Oryza sativa L. cv. Jarrah).The major questions addressed in this thesis were whether elevated atmospheric CO2 concentrations would : 1/ increase grain yield where the soil was flooded or unflooded under conditions of varying phosphorus supply; 2/ change the timing of development; 3/ alter the partitioning of dry weight and nutrients between the roots and shoots; and, 4/ influence grain quality. The mechanisms underlying growth and developmental changes at elevated CO2 were also investigated. After experimentation, it is concluded that the grain yield of rice will increase as the atmospheric CO2 concentration rises even when phosphorus supplies are low. The largest response to rising atmospheric CO2 concentrations will occur under dryland conditions but increases of up to 60 per cent are likely in flooded rice. Importantly, there is likely to be a reduction in the life cycle of rice crops as the CO2 concentration rises. This would have the advantage that more crops could be sown in one season. The quality of the rice grain produced at high CO2 concentrations will also change, with milling quality appearance likely to improve. The cooked rice will be firmer. Experiments also showed that rice grown in flooded soil at different CO2 concentrations is an excellent system for investigating the control of plant growth and development, particularly the influence of hormones.
Books on the topic "Rice – Climatic factors"
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College, Philippines) Annual Rice Forum (2010. Adaptation to climate variability in rice production. College, Laguna, Philippines: Asia Rice Foundation, 2010.
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Yu, Ka-yŏng. Development of a methodology assessing rice production vulnerabilities to climate change. Seoul, Korea: Korea Environment Institute, 2007.
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Lin, Li, ed. Shui dao qi xiang sheng tai. Beijing Shi: Nong ye chu ban she, 1992.
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Oldeman, L. R. IRRI-Madagascar rice research project technical report on agroclimatic characterization of Madagascar. Wageningen: International Soil Reference and Information Centre, 1990.
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Workshop on Development and Adoption of Stress Tolerant Rice Varieties (2009 Dhaka, Bangladesh). Public and private sector participation in promoting stress tolerant rice varieties. Dhaka: South Asia Enterprise Development Facility, International Finance Corp., 2010.
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Subbarao, G. V. Spatial distribution and quantification of rice-fallows in South Asia: Potential for legumes. Patancheru: International Crops Research Institute for the Semi-Arid Tropics, 2001.
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Chūsei no nōgyō to kikō: Suiden nimōsaku no tenkai. Tōkyō: Yoshikawa Kōbunkan, 2002.
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Kansokubu, Japan Kishōchō. Zenkoku no reigai no kiroku: Meiji ikō. [Tokyo]: Kishōchō Kansokubu, 1994.
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Reigai: Sono kōzō to nōka no taiō. Tōkyō: Meibun Shobō, 1986.
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Heberger, Matthew. The impacts of sea level rise on the San Francisco Bay. [Sacramento, Calif.]: California Energy Commission, 2012.
Find full textBook chapters on the topic "Rice – Climatic factors"
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Samantaray, Sanghamitra, Jauhar Ali, Katrina L. C. Nicolas, Jawahar Lal Katara, Ram Lakhan Verma, C. Parameswaran, B. N. Devanna, Awadhesh Kumar, Byomkesh Dash, and Sudhansu Sekhar Bhuyan. "Doubled Haploids in Rice Improvement: Approaches, Applications, and Future Prospects." In Rice Improvement, 425–47. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66530-2_12.
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AbstractExploitation of biotechnological tools in conventional breeding strategies is the need of the hour for overcoming limitations in rice production and productivity. In addition, improvement in quantity and quality along with resistance to climatic and disease stress in rice require immediate attention. Anther culture has proven its efficiency by instantaneously fixing homozygosity through diploidization of regenerated haploid plants. Therefore, androgenesis provides an efficient platform for developing inbred lines in a short period of time. Although anther culture shows its efficiency in speeding up breeding in several crop species, including rice, associated limitations still prevent the exploitation of its optimum potential. Although anther culture is well exploited in japonica rice breeding, its application in indica rice is limited because of inherent recalcitrant genetic backgrounds. The success of anther culture is determined by several factors that limit the efficiency of androgenesis. Identified constraints are early anther necrosis, poor-callus response, and proliferation, and low green-plant regeneration, along with the most frustrating albinism associated with indica rice, which has been considerably clarified. This chapter details the method of androgenesis and scope for improving the applicability of anther culture producing doubled haploids of rice in order to use it as a complementary tool for precision breeding.
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Batjes, N. H., E. M. Bridges, and F. O. Nachtergaele. "World Inventory of Soil Emission Potentials: Development of a Global Soil Data Base of Process-Controlling Factors." In Climate Change and Rice, 102–15. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-85193-3_10.
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Lindau, Charles W., William H. Patrick, and Ron D. DeLaune. "Factors Affecting Methane Production in Flooded Rice Soils." In Agricultural Ecosystem Effects on Trace Gases and Global Climate Change, 157–65. Madison, WI, USA: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2015. http://dx.doi.org/10.2134/asaspecpub55.c11.
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Ali, Jauhar, Mahender Anumalla, Varunseelan Murugaiyan, and Zhikang Li. "Green Super Rice (GSR) Traits: Breeding and Genetics for Multiple Biotic and Abiotic Stress Tolerance in Rice." In Rice Improvement, 59–97. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66530-2_3.
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AbstractThe frequent fluctuations in global climate variability (GCV), decreases in farmland and irrigation water, soil degradation and erosion, and increasing fertilizer costs are the significant factors in declining rice productivity, mainly in Asia and Africa. Under GCV scenarios, it is a challenging task to meet the rice food demand of the growing population. Identifying green traits (tolerance of biotic and abiotic stresses, nutrient-use efficiency, and nutritional grain quality) and stacking them in high-yielding elite genetic backgrounds is one promising approach to increase rice productivity. To this end, the Green Super Rice (GSR) breeding strategy helps to pool multi-stress-tolerance traits by stringent selection processes and to develop superior GSR cultivars within a short span of 4–5 years. In the crossing and selection process of GSR breeding, selective introgression lines (SILs) derived from sets of early backcross BC1F2 bulk populations through both target traits and non-target traits were selected. Genotyping of SILs with high-density SNP markers leads to the identification of a large number of SNP markers linked with the target green traits. The identified SILs with superior trait combinations were used for designed QTL pyramiding to combine different target green traits. The GSR breeding strategy also focused on nutrient- and water-use efficiency besides environment-friendly green features primarily to increase grain yield and income returns for resource-poor farmers. In this chapter, we have highlighted the GSR breeding strategy and QTL introgression of green traits in rice. This breeding strategy has successfully dissected many complex traits and also released several multi-stress-tolerant varieties with high grain yield and productivity in the target regions of Asia and Africa.
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Yusop, Mohd Rafii, Yusuff Oladosu, Abdul Rahim Harun, Asfaliza Ramli, Ghazali Hussin, Mohd Razi Ismail, and Norhani Abdullah. "Application of mutation techniques and genotype × environment interaction for grain yield in ion beam induced mutant rice lines tested in multiple locations in Malaysia." In Mutation breeding, genetic diversity and crop adaptation to climate change, 226–34. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789249095.0023.
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Abstract Genotype evaluation for stability and high yield in rice is an important factor for sustainable rice production and food security. These evaluations are essential, especially when the breeding objective is to release rice with high yields, adaptability and stability for commercial cultivation. To achieve this objective, this study was carried out to select high-yielding rice genotypes induced by ion beam irradiation. Seeds of the rice variety 'MR219' were subjected to different doses of 320 MeV carbon-ion beam irradiation to determine the optimum dose to produce high mutant frequency and spectrum. The optimum dose was 60 Gy. After several cycles of selection and fixation between 2009 and 2014 (M0-M6), six prospective lines with desirable characters were selected at the M6 generation. The selected mutant lines along with other mutant varieties were then tested at five locations in two planting seasons to select high-yielding and stable genotypes. The experiment was conducted in a randomized complete block design with three replications across the locations and seasons. The pooled analysis of variance revealed highly significant differences (p ≤ 0.01, 0.05) among genotypes, among locations and among genotypes by location by season (G×L×S interaction) for the yield traits except for seasons and genotype by season (G×S interaction). Based on univariate and multivariate stability parameters, rice genotypes were classified into three main categories. The first group comprised genotypes with high yield stability along with high yield per hectare. These genotypes include ML4 and ML6 and are widely adapted to diverse environmental conditions. One line exhibited high yield per hectare but low stability; this genotype (ML9) is suitable for specific environments. The last group had low yield per hectare and high stability and included 'MR220', 'Binadhan4' and 'Binadhan7'. This final group is more suitable for breeding specific traits or perhaps has yield component compensation. Hence, rice mutant lines ML4 and ML6 were recommended for commercial cultivation in Malaysia.
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da Luz, Viviane Kopp, Vívian Ebeling Viana, Gabriela Magalhães da Fonseca, Camila Pegoraro, Luciano Carlos da Maia, and Antonio Costa de Oliveira. "Identification of rice mutants tolerant to cold stress at the germination stage by TILLING." In Mutation breeding, genetic diversity and crop adaptation to climate change, 111–19. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789249095.0011.
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Abstract Cold stress is a common factor affecting rice culture in temperate regions, which impairs seed germination, crop establishment and grain yield. This work aimed to identify, through a TILLING assay, rice mutant families displaying cold tolerance during the germination stage. The mutant analyses were performed in 4000 M3 plants obtained through chemical mutagenesis with ethyl methanesulfonate. We screened for mutations in the Os03g0103300 (qLTG3-1) gene, which is responsible for cold tolerance during germination. The TILLING assay identified a mutant (516 A3) which was tested for germination efficiency in cold stress (13°C). The mutant genotype showed a higher relative performance in germination and germination velocity index, which was more than 50% higher compared with wild-type. The mutation induction was efficient in creating genetic variability for cold stress tolerance during germination. Gene expression analyses demonstrate that Os03g0103300 was downregulated in stage S3 in the mutant and wild-type plants germinated under cold stress. However, downregulation in the Os03g0103300 gene was less severe in the mutant, which suggests that the expression related to germination ability under cold stress may be detected in the previous stages, embryo activation and weakening of the tissues that cover the embryo. Overall, the mutant 516 A3 presents a new genetic variant for cold tolerance during germination.
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Tuten, James H. "“Don’t Want to See No More… Like That!”: Climate Change As a Factor in the Collapse of Lowcountry Rice Culture, 1893–1920." In Historical Climate Variability and Impacts in North America, 35–45. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2828-0_3.
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Aderinoye-Abdulwahab, S. A., and T. A. Abdulbaki. "Climate Change Adaptation Strategies Among Cereal Farmers in Kwara State, Nigeria." In African Handbook of Climate Change Adaptation, 509–22. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_228.
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AbstractAgriculture is the art and science of food production which spans soil cultivation, crop growing, and livestock rearing. Over the years, it has served as a means of employment and accounts for more than one-third of total gross domestic product. Cereals, which include rice, maize, and sorghum, are the major dietary energy suppliers and they provide significant amounts of protein, minerals (potassium and calcium), and vitamins (vitamin A and C). The growth and good yield of cereal crop can be greatly influenced by elements of weather and climate such as temperature, sunlight, and relative humidity. While climate determines the choice of what plant to cultivate and how to cultivate, it has been undoubtedly identified as one of the fundamental factors that determine both crop cultivation and livestock keeping. The chapter, though theoretical, adopted Kwara State, Nigeria, as the focus due to favorable weather conditions that support grains production. It was observed that the effect of climate change on cereal production includes: drastic reduction in grains production, reduction in farmers’ profit level, increment in cost during production, diversification to nonfarming activities, and discouragement of youth from participating in agricultural activities. Also, the adopted coping strategies employed by farmers in the focus site were early planting, planting of improved variety, irrigation activities, alternates crop rotation, and cultivation of more agricultural areas. The chapter thus concluded that climate change has negative impact on cereals production and recommends that government should provide communal irrigation facilities that will cushion the effect of low rains on farmers’ productivity, while early planting and cultivation of drought-resistant cultivars should be encouraged.
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Pimbert, Michel. "Introduction: Thinking About Seeds." In Seeds for Diversity and Inclusion, 1–19. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-89405-4_1.
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AbstractSeed diversity is crucial to the sustainability of food and agricultural systems. Yet as Michel Pimbert’s survey of the global ‘state of seeds’ reveals, both wild and domesticated varieties are disappearing under an onslaught of human-driven pressures. Planetary crises—the sixth great extinction and climate change—constitute one. Industrialized agriculture is another: just three crops (maize, rice and wheat) currently supply over 60% of the calories humanity obtains from food. The impacts of this impoverishment on small and Indigenous farmers, ecosystems, food security and human health are manifold, and understanding them demands that we unravel a range of intermeshed social and political factors. Disparities in wealth, gender and ethnicity, for instance, determine the way seeds are cultivated, conserved, collected and exchanged. And the primary domains of seed governance—state, corporate and farm—wield different, often unequal powers. By confronting these complexities, Pimbert asserts, we can map ways of managing seeds equitably, to support human and planetary wellbeing.
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Batra, Geeta, and Trond Norheim. "Staying Small and Beautiful: Enhancing Sustainability in the Small Island Developing States." In Transformational Change for People and the Planet, 73–91. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-78853-7_6.
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AbstractSpread over the ocean regions of the Caribbean, the Pacific and Atlantic, the Indian Ocean, the Mediterranean, and the South China Sea, the small island developing states (SIDS) are a distinct group of developing countries often known for their rich biological diversity, oceans, tourism, and fisheries. The pressures on these and other natural resources is most immediate in the islands where the high vulnerability to the impacts of climate change, limited land and water resources, often unsustainable natural resource use, and other particular economic vulnerabilities are disrupting livelihoods. The COVID-19 pandemic has further exacerbated the SIDS economies and livelihoods. Over the past 25 years the Global Environment Facility (GEF) has supported interventions in SIDS through $578 million in financing, in critical areas such as biodiversity protection, climate resilience, and energy access through renewable energy. But how effective and sustainable have these interventions been? What factors influencing the sustainability of GEF interventions can provide insights for future project design and implementation? This chapter draws on findings from a recent country cluster evaluation on SIDS conducted by the Independent Evaluation Office (IEO) of the GEF. It presents the main environmental challenges in SIDS, the evidence on the relevance and effectiveness of GEF interventions in addressing these challenges, and the main risks to sustainability of outcomes. Important contextual factors that affect sustainability in SIDS include good policies and legal and regulatory frameworks, national ownership of projects, environmental awareness, institutional capacity, and strategic institutional partnerships. Project-related factors including good project design and adaptive project management, scaling-up and replication based on lessons learned, and a good exit strategy are also important for sustainability.
Conference papers on the topic "Rice – Climatic factors"
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Neththasinghe, N. A. S. A., E. D. C. T. Chandrasekara, E. M. S. Ekanayake, N. D. R. Madushan, W. M. U. K. Rathnayake, D. N. Sirisena, and L. D. B. Suriyagoda. "Nitrogen, Phosphorus and Potassium Concentrations in the Grains of Selected Rice Varieties in Sri Lanka." In The SLIIT International Conference on Engineering and Technology 2022. Faculty of Engineering, SLIIT, 2022. http://dx.doi.org/10.54389/xjet2641.
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Rice (Oryza sativa L.) is the staple food for Sri Lankans, and it serves as a key source of essential mineral elements. The variation of grain nutrient concentrations as affected by genetic factors (variety, grain color and age group) are not known, and those were tested in the current study. Total of 200 rice grain samples were collected using a stratified random sampling approach, representing all agro-climatic zones in Sri Lanka. Grain nitrogen (N), phosphorus (P) and potassium (K) concentrations were measured using Kjeldahl, Colorimetric, and General methods, respectively. Grain N P and K concentrations were significantly different among rice varieties (P<0.1). Grain N concentration varied between 4-19 mg g−1 . The highest grain N concentration was recorded in Bg 307 (14 mg g−1 ) while the lowest (i.e., < 10 mg g−1 ) in Bg 367, Bg 374, Bg 358, Bg 310 and Bg 379-2. Grain P concentration varied in the range 0.6- 1.7 mg g−1 . Grain P concentration in At 406 was the highest (1.6 mg g-1), followed by Bg 307, Bg 94-1, Bg 367 i.e., >1.3 mg g-1 and the lowest in Bg 403, Ld 365 and Bg 310 i.e., < 1 mg g−1 . Bg 357, Ld 365, Bg 406, Ld 368 and Bg 310 rice varieties showed significantly lower P concentration than other varieties (P<0.1) Grain N, P and K concentrations were similar among different age classes of rice varieties (P>0.05). Moreover, grain N and P concentrations between the red and white grain varieties were similar (P>0.05). However, varieties with white color grains had higher K concentration than in red rice varieties. There was a significant correlation between grain P and K concentrations (r =0.496, P<0.001). This information would be useful when selecting rice varieties with high and low nutritional qualities and implementing sustainable nutrient management practices in rice-based cropping systems in Sri Lanka. KEYWORDS: Age class, Nitrogen, Phosphorus, Potassium, Rice
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He, Yingbin, Zhenya Zhou, Mingjie Gao, Yang Liu, Yingbin He, Weimin Cai, Jingzhu Chen, and Lei Zhang. "What is statistical relationship between climatic factors changes and rice production at agro-subzone and nationwide levels during the period 1961–2040 based on remote sensing and GIS?" In 2016 5th International Conference on Agro-geoinformatics (Agro-geoinformatics). IEEE, 2016. http://dx.doi.org/10.1109/agro-geoinformatics.2016.7577659.
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Yuan, Yongping, Yan Jiang, and Wenhui Hu. "Assessing Impact Factors on Soil Erosionand Sediment Loss in Puerto Rico Watersheds." In Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2023. http://dx.doi.org/10.13031/soil.23004.
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Yuan, Yongping, Yan Jiang, and Wenhui Hu. "Assessing Impact Factors on Soil Erosionand Sediment Loss in Puerto Rico Watersheds." In Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2023. http://dx.doi.org/10.13031/soil.2023004.
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Tkachenko, Yu V., and G. L. Zelensky. "Study of new samples and varieties of rice under conditions of air drought." In CURRENT STATE, PROBLEMS AND PROSPECTS OF THE DEVELOPMENT OF AGRARIAN SCIENCE. Federal State Budget Scientific Institution “Research Institute of Agriculture of Crimea”, 2020. http://dx.doi.org/10.33952/2542-0720-2020-5-9-10-78.
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In the Krasnodar Territory, dry wind in summer is one of the negative factors of the climate. Rice plants increase transpiration for cooling and gradually lose their turgor due to strong evaporation caused by low relative humidity and strong winds. In the nursery of the competitive test trials, in 2018-2019, we studied different types of rice: ‘Yug2’ with ordinary but folding leaves; ‘Yug-3’ with vertical folding leaves; ‘Yug-5’ and ‘Rubikon’ with vertical non-folding leaves; standard – variety ‘Rapan’ with ordinary leaves. Under conditions of drought and increased plant density, sample ‘Yug-2’ was the best in quantitative terms.
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ANAYA, BARA, DANLIN HOU, IBRAHIM HASSAN, LIANGZHU (LEON) WANG, and AZIZ RAHMAN. "INFLUENCING FACTORS ON COOLING DEMAND OF HIGH-RISE BUILDINGS IN HOT/HUMID CLIMATES: A REVIEW." In SUSTAINABLE CITY 2021. Southampton UK: WIT Press, 2021. http://dx.doi.org/10.2495/sc210351.
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Tan, Ye. "Effects of two climate change factors, elevated temperature and water stress, on the rice brown planthopper,Nilaparvata lugens(Stål)." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.109878.
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Ciconkov, Risto. "Climate Change and HVACR Systems." In 50th International HVAC&R Congress and Exhibition. SMEITS, 2020. http://dx.doi.org/10.24094/kghk.019.50.1.245.
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Indicators at a global level are presented: population in the world today and forecasts for developed and developing countries. The following diagrams are presented: world total primary energy consumption, global CO2 emissions from combustion since 1971, as well as cumulative CO2 emissions by regions since 1750. Facts for climate change are included (according to WMO and IPCC): increase in GHG concentrations, increase in air temperature, rise in sea level, etc. The consequences of global warming are listed: extreme rainfall and floods; high temperatures – heat waves, droughts, wildfires; huge damage to agriculture; harmful impacts on the environment, etc. The IPCC provides several scenarios for a global rise of air temperature up to 2100, for a global rise of sea level etc. The activities of the international community on climate change are organized through: IPCC, UNFCCC, Kyoto Protocol, Paris Agreement and continuous negotiations. The European Union (EU) is probably the most advanced in the battle against climate change. Some important strategies are outlined: by 2020, by 2030, and by 2050. Heating, air-conditioning and refrigeration systems (HVACR) are connected with energy consumption, which means they are a source of GHG emissions. The situation with HVACR systems is such that even in EU countries, the fossil fuels are dominant in the heating systems. Future solutions for HVACR systems are described. The first step is to increase the energy efficiency of buildings and HVACR equipment. The concept of "nearly zero-energy buildings" should be worked on. HVACR systems should be based on renewable energy sources (RES). The considered solutions include heat pumps, solar panels, thermal storage, district heating, combined heat and power, condensing boilers, reversible air conditioners, the concept of "smart" buildings, automation of HVACR systems with digital technology, etc. The political, economic and social aspects of climate change are analyzed. Capitalism society, market economy, profit, is the main reason for today's climate change situation. On the end, there is a discussion highlighting the need for urgent and major investment in RES and energy efficiency. For rich countries, this is really achievable. But developing countries, representing 83% of the world's population, need financial assistance, and this needs to be regulated through the Paris Agreement. Obstacles of a political nature are also possible (US and Paris Agreement).
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Ding, Wowo, Ruoyao Li, and Lian Tang. "Evaluation of Generating Mechanism of Residential Building Patterns in Contemporary Cities – Case Study on Xi’an and Nanjing." In 24th ISUF 2017 - City and Territory in the Globalization Age. Valencia: Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/isuf2017.2017.5920.
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Ruoyao Li, Lian Tang, Wowo DingNanjing University School of Architecture and Urban Planning, Nanjing University, Nanjing, Jiangsu, 200093, ChinaE-mail: lilyhehua@163.com, tanglian@nju.edu.cn, dww@nju.edu.cnTelephone number:+86 13675149161,+86 13770849401,+86 25 83593020 Keywords: residential building pattern, generating mechanism, living behavior, floor area ratio, sunshine regulations Residential area occupies a large portion of urban land, so it is very important to understand the characteristics of the residential building patterns and how such patterns, normally parallel multi-story and high-rise slab apartments in various cities of China, are formed. The residential building patterns are according to the living behavior, climate consideration, environmental requirement and market demands. Our previous studies have shown that sunshine regulation is by far the most important factor in the generation of the residential building pattern since 1980. This paper attempts to make a comprehensive evaluation to see the generating mechanism of the residential morphological patterns. Ten residential plots from two cities located in different climate zones of Xi’an and Nanjing are evaluated. Five factors, namely, the type of the apartment, plot FAR, land coverage, sunshine regulations and spatial characteristics of plot pattern, will be used as comprehensive evaluation indicators in the comparison. The study reveals how these factors interplay in the generation of the observed plot patterns and which factor is most important in this process. If the sunshine regulations were the key factor, how different the plot patterns in different climate zones and latitudes would have varied. Through evaluating generating mechanism we could find out the key generating factors, which is useful as the references for design. References Standard for Assessment Parameters of Sunlight on Building (GB/T 50947-2014) Code for Design of Residential Buildings (GB 50096-2011) Quan Liu, Wowo Ding(2014) Morphological Study on the Unit of Urban Fabric of Contemporary Residential Plots in Yangtze River Delta, China Lina Zhang, Wowo Ding(2014) Density, Height Limitation, and Plot Pattern: Quantitative Description of the Residential Plots, Nanjing, China Jintang Chen, Sheng Yao, Yinsheng Tian (2014) Experiences from Researches about Residential Areas Employing Conzenian Approach
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Drapella-Hermansdorfer, Alina. "Eco-ergonomics and Floating Buildings Design. The Blue Strategy of Wroclaw." In Applied Human Factors and Ergonomics Conference. AHFE International, 2018. http://dx.doi.org/10.54941/ahfe100094.
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Due to climate change, the floating buildings and estates may become one of the most important environments to live and work in the next few decades. Amphibian homes that are based on the ground and that float only when flood waters rise are especially required in Poland, where there are no large areas of inland waters, but where much of the urban development is located within the flood plains. Security considerations and environmental responsibility in this regard bring a new dimension to the traditionally understood ergonomics. They affect both the internal layout of the buildings, their construction and installation, as well as the way the surrounding area is used. The setting of standards for floating buildings and the rules of the floodplain management are the main objectives in the Blue Strategy of Wroclaw (BSW). The BSW, which is created at the University of Technology in Wroclaw, is the first attempt to find a comprehensive solution to these issues across the city’s riverside. Pilot projects are prepared by students and they focus on the modular floating buildings, intended for public use, such as sports, leisure, cultural activities and co-working. This evolution of the working space seems to be significant for the information society.
Reports on the topic "Rice – Climatic factors"
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Khalil, M. A. K., and R. A. Rasmussen. Methane emissions from rice fields: The effects of climatic and agricultural factors. Final report, March 1, 1994--April 30, 1997. Office of Scientific and Technical Information (OSTI), October 1997. http://dx.doi.org/10.2172/534483.
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Price, Roz. Overview of Political Economy Analysis Frameworks in the Area of Climate Governance and Key Issues to Consider. Institute of Development Studies (IDS), June 2021. http://dx.doi.org/10.19088/k4d.2021.088.
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Despite global recognition of the urgency of climate action and the need to transition to a low-carbon economy, greenhouse gas emissions continue to rise, and adaptation needs remain urgent. For a number of years, there have been calls for greater attention to political economy in tackling climate change and development outcomes. The political economy analysis is important as it can be used to assess the factors that may enable or constrain the implementation of climate change policies and actions and sustain political commitment. A framework can guide the process of political economy analysis, identifying relevant stakeholders, their incentives and motives, and other structural factors. This rapid review summarises several such frameworks specifically aimed at climate governance issues developed in recent years, some of these also include useful guidance and steps on the implementation of the framework. The review focuses strictly on the literature around political economy analyses in relation to climate change. It does not explore the history of and rationale for political economy analysis in development in general, nor the accompanying frameworks or operational How-To guides. Another K4D helpdesk by Lucas (2019) looking at what factors affect the political will of African governments to address climate change highlights a number of political economy frameworks that may also be useful to draw on.
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Alonso-Robisco, Andrés, José Manuel Carbó, and José Manuel Carbó. Machine Learning methods in climate finance: a systematic review. Madrid: Banco de España, February 2023. http://dx.doi.org/10.53479/29594.
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Preventing the materialization of climate change is one of the main challenges of our time. The involvement of the financial sector is a fundamental pillar in this task, which has led to the emergence of a new field in the literature, climate finance. In turn, the use of Machine Learning (ML) as a tool to analyze climate finance is on the rise, due to the need to use big data to collect new climate-related information and model complex non-linear relationships. Considering the proliferation of articles in this field, and the potential for the use of ML, we propose a review of the academic literature to assess how ML is enabling climate finance to scale up. The main contribution of this paper is to provide a structure of application domains in a highly fragmented research field, aiming to spur further innovative work from ML experts. To pursue this objective, first we perform a systematic search of three scientific databases to assemble a corpus of relevant studies. Using topic modeling (Latent Dirichlet Allocation) we uncover representative thematic clusters. This allows us to statistically identify seven granular areas where ML is playing a significant role in climate finance literature: natural hazards, biodiversity, agricultural risk, carbon markets, energy economics, ESG factors & investing, and climate data. Second, we perform an analysis highlighting publication trends; and thirdly, we show a breakdown of ML methods applied by research area.
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Hunter, Fraser, and Martin Carruthers. Iron Age Scotland. Society for Antiquaries of Scotland, September 2012. http://dx.doi.org/10.9750/scarf.09.2012.193.
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The main recommendations of the panel report can be summarised under five key headings: Building blocks: The ultimate aim should be to build rich, detailed and testable narratives situated within a European context, and addressing phenomena from the longue durée to the short-term over international to local scales. Chronological control is essential to this and effective dating strategies are required to enable generation-level analysis. The ‘serendipity factor’ of archaeological work must be enhanced by recognising and getting the most out of information-rich sites as they appear. o There is a pressing need to revisit the archives of excavated sites to extract more information from existing resources, notably through dating programmes targeted at regional sequences – the Western Isles Atlantic roundhouse sequence is an obvious target. o Many areas still lack anything beyond the baldest of settlement sequences, with little understanding of the relations between key site types. There is a need to get at least basic sequences from many more areas, either from sustained regional programmes or targeted sampling exercises. o Much of the methodologically innovative work and new insights have come from long-running research excavations. Such large-scale research projects are an important element in developing new approaches to the Iron Age. Daily life and practice: There remains great potential to improve the understanding of people’s lives in the Iron Age through fresh approaches to, and integration of, existing and newly-excavated data. o House use. Rigorous analysis and innovative approaches, including experimental archaeology, should be employed to get the most out of the understanding of daily life through the strengths of the Scottish record, such as deposits within buildings, organic preservation and waterlogging. o Material culture. Artefact studies have the potential to be far more integral to understandings of Iron Age societies, both from the rich assemblages of the Atlantic area and less-rich lowland finds. Key areas of concern are basic studies of material groups (including the function of everyday items such as stone and bone tools, and the nature of craft processes – iron, copper alloy, bone/antler and shale offer particularly good evidence). Other key topics are: the role of ‘art’ and other forms of decoration and comparative approaches to assemblages to obtain synthetic views of the uses of material culture. o Field to feast. Subsistence practices are a core area of research essential to understanding past society, but different strands of evidence need to be more fully integrated, with a ‘field to feast’ approach, from production to consumption. The working of agricultural systems is poorly understood, from agricultural processes to cooking practices and cuisine: integrated work between different specialisms would assist greatly. There is a need for conceptual as well as practical perspectives – e.g. how were wild resources conceived? o Ritual practice. There has been valuable work in identifying depositional practices, such as deposition of animals or querns, which are thought to relate to house-based ritual practices, but there is great potential for further pattern-spotting, synthesis and interpretation. Iron Age Scotland: ScARF Panel Report v Landscapes and regions: Concepts of ‘region’ or ‘province’, and how they changed over time, need to be critically explored, because they are contentious, poorly defined and highly variable. What did Iron Age people see as their geographical horizons, and how did this change? Attempts to understand the Iron Age landscape require improved, integrated survey methodologies, as existing approaches are inevitably partial. Aspects of the landscape’s physical form and cover should be investigated more fully, in terms of vegetation (known only in outline over most of the country) and sea level change in key areas such as the firths of Moray and Forth. Landscapes beyond settlement merit further work, e.g. the use of the landscape for deposition of objects or people, and what this tells us of contemporary perceptions and beliefs. Concepts of inherited landscapes (how Iron Age communities saw and used this longlived land) and socal resilience to issues such as climate change should be explored more fully. Reconstructing Iron Age societies. The changing structure of society over space and time in this period remains poorly understood. Researchers should interrogate the data for better and more explicitly-expressed understandings of social structures and relations between people. The wider context: Researchers need to engage with the big questions of change on a European level (and beyond). Relationships with neighbouring areas (e.g. England, Ireland) and analogies from other areas (e.g. Scandinavia and the Low Countries) can help inform Scottish studies. Key big topics are: o The nature and effect of the introduction of iron. o The social processes lying behind evidence for movement and contact. o Parallels and differences in social processes and developments. o The changing nature of houses and households over this period, including the role of ‘substantial houses’, from crannogs to brochs, the development and role of complex architecture, and the shift away from roundhouses. o The chronology, nature and meaning of hillforts and other enclosed settlements. o Relationships with the Roman world
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Miller, Gad, and Jeffrey F. Harper. Pollen fertility and the role of ROS and Ca signaling in heat stress tolerance. United States Department of Agriculture, January 2013. http://dx.doi.org/10.32747/2013.7598150.bard.
Full textAbstract:
The long-term goal of this research is to understand how pollen cope with stress, and identify genes that can be manipulated in crop plants to improve reproductive success during heat stress. The specific aims were to: 1) Compare heat stress dependent changes in gene expression between wild type pollen, and mutants in which pollen are heat sensitive (cngc16) or heat tolerant (apx2-1). 2) Compare cngc16 and apx2 mutants for differences in heat-stress triggered changes in ROS, cNMP, and Ca²⁺ transients. 3) Expand a mutant screen for pollen with increased or decreased thermo-tolerance. These aims were designed to provide novel and fundamental advances to our understanding of stress tolerance in pollen reproductive development, and enable research aimed at improving crop plants to be more productive under conditions of heat stress. Background: Each year crop yields are severely impacted by a variety of stress conditions, including heat, cold, drought, hypoxia, and salt. Reproductive development in flowering plants is highly sensitive to hot or cold temperatures, with even a single hot day or cold night sometimes being fatal to reproductive success. In many plants, pollen tube development and fertilization is often the weakest link. Current speculation about global climate change is that most agricultural regions will experience more extreme environmental fluctuations. With the human food supply largely dependent on seeds, it is critical that we consider ways to improve stress tolerance during fertilization. The heat stress response (HSR) has been intensively studied in vegetative tissues, but is poorly understood during reproductive development. A general paradigm is that HS is accompanied by increased production of reactive oxygen species (ROS) and induction of ROS-scavenging enzymes to protect cells from excess oxidative damage. The activation of the HSR has been linked to cytosolic Ca²⁺ signals, and transcriptional and translational responses, including the increased expression of heat shock proteins (HSPs) and antioxidative pathways. The focus of the proposed research was on two mutations, which have been discovered in a collaboration between the Harper and Miller labs, that either increase or decrease reproductive stress tolerance in a model plant, Arabidopsis thaliana (i.e., cngc16--cyclic nucleotide gated channel 16, apx2-1--ascorbate peroxidase 2,). Major conclusions, solutions, achievements. Using RNA-seq technology, the expression profiles of cngc16 and apx2 pollen grains were independently compared to wild type under favourable conditions and following HS. In comparison to a wild type HSR, there were 2,776 differences in the transcriptome response in cngc16 pollen, consistent with a model in which this heat-sensitive mutant fails to enact or maintain a normal wild-type HSR. In a comparison with apx2 pollen, there were 900 differences in the HSR. Some portion of these 900 differences might contribute to an improved HSR in apx2 pollen. Twenty-seven and 42 transcription factor changes, in cngc16 and apx2-1, respectively, were identified that could provide unique contributions to a pollen HSR. While we found that the functional HS-dependent reprogramming of the pollen transcriptome requires specific activity of CNGC16, we identified in apx2 specific activation of flavonol-biosynthesis pathway and auxin signalling that support a role in pollen thermotolerance. Results from this study have identified metabolic pathways and candidate genes of potential use in improving HS tolerance in pollen. Additionally, we developed new FACS-based methodology that can quantify the stress response for individual pollen in a high-throughput fashion. This technology is being adapted for biological screening of crop plant’s pollen to identify novel thermotolerance traits. Implications, both scientific and agricultural. This study has provided a reference data on the pollen HSR from a model plant, and supports a model that the HSR in pollen has many differences compared to vegetative cells. This provides an important foundation for understanding and improving the pollen HSR, and therefor contributes to the long-term goal of improving productivity in crop plants subjected to temperature stress conditions. A specific hypothesis that has emerged from this study is that pollen thermotolerance can be improved by increasing flavonol accumulation before or during a stress response. Efforts to test this hypothesis have been initiated, and if successful have the potential for application with major seed crops such as maize and rice.