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Artykuły w czasopismach na temat "Conifer-broadleaf forest"
Tsukada, Matsuo. "Map of Vegetation during the Last Glacial Maximum in Japan". Quaternary Research 23, nr 3 (maj 1985): 369–81. http://dx.doi.org/10.1016/0033-5894(85)90041-9.
Pełny tekst źródłaAbele, Suzanne E., S. Ellen Macdonald i John R. Spence. "Cover type, environmental characteristics, and conservation of terrestrial gastropod diversity in boreal mixedwood forests". Canadian Journal of Forest Research 44, nr 1 (styczeń 2014): 36–44. http://dx.doi.org/10.1139/cjfr-2013-0210.
Pełny tekst źródłaHuesca, Margarita, Keely L. Roth, Mariano García i Susan L. Ustin. "Discrimination of Canopy Structural Types in the Sierra Nevada Mountains in Central California". Remote Sensing 11, nr 9 (8.05.2019): 1100. http://dx.doi.org/10.3390/rs11091100.
Pełny tekst źródłaHastings, Jack H., Scott V. Ollinger, Andrew P. Ouimette, Rebecca Sanders-DeMott, Michael W. Palace, Mark J. Ducey, Franklin B. Sullivan, David Basler i David A. Orwig. "Tree Species Traits Determine the Success of LiDAR-Based Crown Mapping in a Mixed Temperate Forest". Remote Sensing 12, nr 2 (17.01.2020): 309. http://dx.doi.org/10.3390/rs12020309.
Pełny tekst źródłaMilios, Elias, Kyriaki Kitikidou i Kalliopi Radoglou. "New Silvicultural Treatments for Conifer Peri-Urban Forests Having Broadleaves in the Understory - The First Application in the Peri-Urban of Xanthi in Northeastern Greece". South-east European forestry 10, nr 2 (31.10.2019): 107–16. http://dx.doi.org/10.15177/seefor.19-16.
Pełny tekst źródłaHawkins, C. D. B., A. Dhar i B. J. Rogers. "How much birch (Betula papyrifera) is too much for maximizing spruce (Picea glauca) growth: a case study in boreal spruce plantation forests". Journal of Forest Science 58, No. 7 (27.07.2012): 314–27. http://dx.doi.org/10.17221/8/2012-jfs.
Pełny tekst źródłaBjerreskov, Kristian Skau, Thomas Nord-Larsen i Rasmus Fensholt. "Classification of Nemoral Forests with Fusion of Multi-Temporal Sentinel-1 and 2 Data". Remote Sensing 13, nr 5 (3.03.2021): 950. http://dx.doi.org/10.3390/rs13050950.
Pełny tekst źródłaBrassard, Brian W., Han Y. H. Chen, Jian R. Wang i Peter N. Duinker. "Effects of time since stand-replacing fire and overstory composition on live-tree structural diversity in the boreal forest of central Canada". Canadian Journal of Forest Research 38, nr 1 (styczeń 2008): 52–62. http://dx.doi.org/10.1139/x07-125.
Pełny tekst źródłaSchumacher, Johannes, Margret Rattay, Melanie Kirchhöfer, Petra Adler i Gerald Kändler. "Combination of Multi-Temporal Sentinel 2 Images and Aerial Image Based Canopy Height Models for Timber Volume Modelling". Forests 10, nr 9 (30.08.2019): 746. http://dx.doi.org/10.3390/f10090746.
Pełny tekst źródłaJayathunga, Sadeepa, Toshiaki Owari i Satoshi Tsuyuki. "Digital Aerial Photogrammetry for Uneven-Aged Forest Management: Assessing the Potential to Reconstruct Canopy Structure and Estimate Living Biomass". Remote Sensing 11, nr 3 (8.02.2019): 338. http://dx.doi.org/10.3390/rs11030338.
Pełny tekst źródłaRozprawy doktorskie na temat "Conifer-broadleaf forest"
Berry, Christopher J. J. "Post-dispersal seed predation in a conifer-broadleaf forest remnant : the importance of exotic mammals". Lincoln University, 2006. http://hdl.handle.net/10182/666.
Pełny tekst źródłaToïgo, Maude. "Productivité des forêts mélangées : effet de la diversité en essences dans un contexte climatique et édaphique variable". Thesis, Orléans, 2015. http://www.theses.fr/2015ORLE2018.
Pełny tekst źródłaGlobal environmental changes may lead to a modification of abiotic factors and biological diversity. The production function in forest ecosystems has the particularity to be both subjected to, and a regulator of, these environmental changes. Understanding how forest productivity is driven by species diversity and environmental factors is therefore a critical issue. This PhD thesis studies how tree species mixture affects their productivity along edaphic and climatic gradients. Based on an approach using both an original dataset and the national forest inventory dataset, I focused on five major species of European forests in pure and two-species forests: Quercus petraea, Pinus sylvestris, Fagus sylvatica, Abies alba and Picea abies. In lowlands, abiotic factors had little impacts on the outcome of tree species mixture on productivity. In addition, the effect of tree species mixture was determined by the shade tolerance of companion species. In highlands, the positive effects of tree species mixture were strongest when the abiotic factors were the most limiting for growth. These results highlight the importance of considering abiotic factors and the functional characteristics of species as drivers of the effect of biological diversity on ecosystem functions
Li, Qin Guo, i 李欽國. "A comparison of bird communities between conifer plantation and natural broadleaf forest". Thesis, 1995. http://ndltd.ncl.edu.tw/handle/27870428396496272912.
Pełny tekst źródłaHsiao, Hung-Min, i 蕭泓泯. "A comparative study of nutrient input-output at natural broadleaf forest and conifer plantation at Lien-hua-chi Experimental Forest". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/49384854232525309811.
Pełny tekst źródła國立彰化師範大學
地理學系
94
Precipitation and stream water (including natural hardwood and conifer plantation watersheds) in Lien-hua-chi Experimental Forest were collected in 2005 to examine its chemical composition and evaluate nutrient input and output in a natural hardwood forest and a conifer plantation. Results indicate that the volume-weighted mean annual pH of wet-only precipitation was 4.84, lower than the criterion for acid rain (pH < 5.0). It was also lower than the value measured a decade ago at the same site (5.51), despite decreases in the emission of acidic pollutants over the same period of time. Coincident decreases in the emission of particulate pollutants with high concentrations of acid-neutralizing base cations, as well as differences in the collection methods (wet-only versus bulk precipitation) were possible explanations for the observed difference in precipitation pH. Seasonally, the lower pH occurred in spring (4.79) and winter (4.58) while summer (4.93) and fall (5.25) had higher pH. This pattern is in agreement with many other studies throughout Taiwan and is often attributed to the high contribution of pollutants transported from mainland China in the winter and spring. The deposition of all ions was much higher in spring and summer than in fall and winter. For acidic pollutants (sulfate and nitrate) the deposition in the spring and summer accounted for approximately 80% of the annual deposition. This asymmetry is attributable to the much higher quantity of precipitation in the summer and spring which comprised more than 80% of the annual rainfall. Volum-weighted annual mean concentration of Na+ (12.5 �惷q/L) and Cl- (7.9 �惷q/L) in precipitation at Lien-hua-chi Experimental Forest is lower than that in Taichung City (14.1 �惷q/L and 16.9 �惷q/L, respectively) which in turn is lower than that in Changhua City (23.3 �惷q/L and 29.1 �惷q/L, respectively) indicating a trend of decreasing oceanic influences with increasing distance from the coast. The rates of S and inorganic N deposition, approximately 11 kg/ha/yr, were higher than in northeastern America where high acid deposition is a major concern in forest nutrient cycling and health. The impact of such high acidic deposition on forest ecosystems of Taiwan needs to be examined thoroughly. The rate of S deposition observed in Lien-hua-chi Experimental Forest is similar to several other forest ecosystems in central Taiwan whereas the rate of N deposition at Lien-hua-chi Experimental Forest is considerably higher. It appears that high N deposition is more localized than S deposition. The application of commercial fertilizers around Lien-hua-chi Experimental Forest is likely the key to the observed higher N deposition at our study site compared to other forest ecosystems in central Taiwan. Four types of hydrological controls were used to describe how concentrations of different elements changed as a function of increased stream water discharge. The first type includes conductivity, Na+, Ca2+, Mg2+, SO42- and HCO3-, and can be described as dilution. Their concentrations decreased with increased stream water discharge possibly due to decreased relative contributions by baseflow source. Nitrate belongs to a second type that can be described as enhanced hydrological access possibly because it is mainly derived form the leaching associated with near surface water. Chloride can be described as the third form known as hydrologically constant because its concentration remain relatively unchanged throughout the entire water year. Finally a fourth type includes NH4+、K+、and H+. Elements in this group have no distinct relationship with discharge. Twenty-four years after clear-cutting, NH4+ and NO3- were the only two elements showing net gain state in the conifer plantation, especially in growing season (spring and summer) which contributed about 80 % of annual net gain. Possibly the 23 years old conifer plantation still needs considerable amount of inorganic N resulting in itse retention. Twenty-three years after the cutting the annual loss of base cations, Na, Ca2+ and Mg2+, in the conifer plantation were 1.4 ~ 1.8 times higher than in the natural hardwood forest.
Yang, Kuo-Hsiang, i 楊國祥. "Effects of Thinning on the Soil Solution Chemistry in the Temperate Conifer-Broadleaf Mixed Forest in Taiping Mountain Area". Thesis, 2007. http://ndltd.ncl.edu.tw/handle/09391404557236781737.
Pełny tekst źródła國立宜蘭大學
自然資源學系碩士班
95
Abstract In order to recognize the effect of forest thinning on the nutrient contents in soil solution and evaluating the benefit of forest thinning, eight thinning treatments were examined in this study, including control (0%, 3 plots) and thinning intensity of 25%, 28%, 30%, 33%, 37%, 38% and 53% (one plot for each treatment). The study area was located at the 61 forest compartment of Hoping Working Circle in Taipingshan area. Throughfall and rain water were collected monthly for measuring pH and nutrient content. Three soil samples for each experimental plot were also collected monthly by soil auger, including 0-10 cm, 10-20 cm and 20-30cm. Soil solution was extracted and prepared for measuring anions (Cl, NO3, SO4, PO4) and cations (NH4, K, Na, Ca, Mg, Fe, Al, Mn, Si). The objectives of this study were to (1) examine the variation of nutrient input under different thinning treatments by monitoring the changes of rain water and throughfall in one-year shortened and intensive monitoring period, and (2) to investigate the variation of nutrients in soil solution and discuss the benefit of forest thinning for propose the consultation to the forestry management in the future. The results of this study indicated that the pH value of rain water was lower than throughfall, which was attributed to the effect of acid deposition from atmosphere. The chemical compositions of soil solution suggested that the cation concentration decreased with the soil depth increased. We examined that the gradually decreased of cation with soil depth was due to the increasing effect of bio-factor (for example, nutrient absorption by roots and microbial fixation, etc.). The effect of forest thinning on the variation of soil solution chemical composition was changed with different thinning intensity. From the results of this study, we concluded that the operations of forest thinning could alter the soil nutrients content, and the changes were beneficial to the growth of remaining trees. Furthermore, in order to understand the chronic variation of forest thinning, the long-term monitoring was suggested to find out the periodic changes of forest thinning influence on the variation of forest soil moisture and nutrients content. Key words: Thinning, soil solution chemistry, soil nutrients, cations, anions
Wen, Hsu Chia, i 許佳雯. "Effects of Thinning on the Dynamic of Litterfall Decomposition in the Temperate Conifer-Broadleaf Mixed Forest in Taiping Mountain Area, Taiwan". Thesis, 2007. http://ndltd.ncl.edu.tw/handle/09691767756836067123.
Pełny tekst źródła國立宜蘭大學
自然資源學系碩士班
95
The 51-yr-old Japanese cedar (Cryptomeria japonica (L. f.) D. Don) plantation forest in Taiping mountain area was selected as the monitoring site for forest thinning experiment. The objective of this study was to investigate the impact of different thinning treatment (including control (0%), 25%, 28%, 30%, 33%, 37%, 38%, and 53% thinning treatment) on litter decomposition and soil nutrient release. After one year monitoring and analysis, the results showed that the litter mass decomposition constant was about 0.71-1.03 yr-1 during the study, and the order of decomposition intensity was heavy > light > medium thinning. The trends of C and Ca remaining mass (%) of the litter in litterbags were medium > light > heavy thinning. On the other hand, the trend of P remaining mass (%) was heavy > light > medium thinning. The trend of Mg was medium > heavy > light thinning. The trends of N was highest in light thinning region and K and Mg was highest in heavy thinning region, but have no consistent change between other thinning regions. Soil available N contents at 0-5 cm and 5-15 cm soil layers in heavy thinning are the highest, and suggested that the available N content after thinning was higher than that before thinning. The tendency of soil available K content in control region was higher than thinning treated regions at 0-5 cm soil depth. After thinning, the soil available P content was showed lower than control region at 0-5 cm depth, and has the tendency as heavy > light > medium thinning at 5-15 cm soil layer. The results of soil solution chemistry showed that the content of NH4, K, Na, and Si were higher than other cations, and the order of anions was SO4 > Cl > NO3. The tendency, including the total amounts of cations and anions, acid neutralizing capacity (ANC) and charge balance (CB) of soil solution, was showed that the control region was higher than thinning treated regions at both 0-5 cm and 5-15 cm soil layers. We examined that much more rain water were allowed for directly falling into soil surface after the canopy opening by forest thinning, and were resulted in strongly soil (or surface soil) leaching and reduced the nutrient elements content of soil solution in the thinning treated region. Besides, the study of litterfall decomposition was only one-year short term monitoring period, and we can not estimated the C and N fluxes under different forest thinning treatment from the results of the first year. For the consultation of evaluating the benefit of forest thinning management in Taiwan, it needs further researches for continually monitoring decomposition effects and estimating the C and N fluxes under different forest thinning treatment.
Książki na temat "Conifer-broadleaf forest"
Comeau, P. G. LITE: A model for estimating light under broadleaf and conifer tree canopies. Victoria, BC: British Columbia Ministry of Forests Research Program, 1998.
Znajdź pełny tekst źródłaSilviculture of temperate and boreal broadleaf-conifer mixtures. Victoria, BC: Province of British Columbia, Ministry of Forests Research Program, 1996.
Znajdź pełny tekst źródłaCzęści książek na temat "Conifer-broadleaf forest"
Robakowski, Piotr, Tomasz P. Wyka, Wojciech Kowalkowski, Władysław Barzdajn, Emilia Pers-Kamczyc, Artur Jankowski i Barbara Politycka. "Practical Implications of Different Phenotypic and Molecular Responses of Evergreen Conifer and Broadleaf Deciduous Forest Tree Species to Regulated Water Deficit in a Container Nursery". W Prime Archives in Environmental Research. Vide Leaf, Hyderabad, 2021. http://dx.doi.org/10.37247/paag.1.2020.5.
Pełny tekst źródłaStreszczenia konferencji na temat "Conifer-broadleaf forest"
Brown, L. J., C. M. Trotter i M. R. Johnston. "Assessing the potential of sub-pixel classification in a mixed conifer-broadleaf forest". W IGARSS '98. Sensing and Managing the Environment. 1998 IEEE International Geoscience and Remote Sensing. Symposium Proceedings. (Cat. No.98CH36174). IEEE, 1998. http://dx.doi.org/10.1109/igarss.1998.699580.
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