Dissertations / Theses on the topic 'Soil water;hydraulic properties;water balance'
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Zhang, Shulan. "Soil hydraulic properties and water balance under various soil management regimes on the Loess Plateau, China /." Umeå : Dept. of Forest Ecology, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/2005126.pdf.
Full textMinasny, Budiman. "Efficient Methods for Predicting Soil Hydraulic Properties." University of Sydney. Land, Water & Crop Sciences, 2000. http://hdl.handle.net/2123/853.
Full textGeorge, Brendan Hugh. "Comparison of techniques for measuring the water content of soil and other porous media." University of Sydney, 1999. http://hdl.handle.net/2123/491.
Full textJiang, Pingping. "Variability of soil hydraulic properties and estimation of plant-available water on claypan-soil landscapes." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/4783.
Full textThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on September 25, 2007) Vita. Includes bibliographical references.
Shahadha, Saadi Sattar. "Measured Soil Hydraulic Properties as RZWQM2 Input to Simulate Soil Water Dynamics and Crop Evapotranspiration." UKnowledge, 2018. https://uknowledge.uky.edu/pss_etds/110.
Full textZhang, Zhuanfang. "Measuring soil hydraulic properties and stochastic analysis of water movement using line sources." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ40393.pdf.
Full textScanlan, Craig Anthony. "Processes and effects of root-induced changes to soil hydraulic properties." University of Western Australia. School of Earth and Environment, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0188.
Full textSalazar, Osvaldo. "Modelling water discharge and nitrogen loads from drained agricultural land at field and watershed scale /." Uppsala : Department of Soil and Environment, Swedish University of Agricultural Sciences, 2009. http://epsilon.slu.se/200932.pdf.
Full textAlmeida, Eurileny Lucas de. "Measurement of hydraulic conductivity and water retention curves for different methods and prediction of soil physical properties by kriging." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13855.
Full textKnowledge of the physical and hydraulic properties of the soil and its spatial dependence is important because it allows you to perform the zoning of the area in plots that receive differentiated management. This work was divided into three chapters whose general objective is to measure the hydraulic conductivity and water retention curve in soil by different methods and by using the Kriging, draw maps of soil physical attributes of the Irrigation Perimeter Baixo AcaraÃ. To obtain the water retention in soil curve method was used filter paper compared to the traditional method in five different soils Perimeter. To measure the hydraulic conductivity were used capacitive sensors to replace the tensiometer in the instantaneous profile installed method on a Argissolo Vermelho Amarelo eutrÃfico , as well as the calibration of these sensors in the field and laboratory. The maps were obtained by kriging of soil properties: sand, silt, clay, soil and particle density, porosity and saturated hydraulic conductivity. To obtain this last the tension infiltrometer and the constant load permeameter were used.
O conhecimento dos atributos fÃsico-hÃdricos do solo e de sua dependÃncia espacial à importante, pois permite realizar o zoneamento da Ãrea em glebas que receberÃo prÃticas de manejo diferenciadas. Este trabalho foi dividido em trÃs capÃtulos cujo objetivo geral à medir a condutividade hidrÃulica e a curva de retenÃÃo de Ãgua no solo por diferentes mÃtodos e, utilizando a Krigagem, elaborar mapas de atributos fÃsicos dos solos do PerÃmetro Irrigado Baixo AcaraÃ. Para obtenÃÃo da curva de retenÃÃo de Ãgua no solo foi utilizado o mÃtodo do papel filtro em comparaÃÃo ao mÃtodo tradicional em cinco diferentes solos do PerÃmetro. Para medida da condutividade hidrÃulica foram utilizados sensores capacitivos em substituiÃÃo aos tensiÃmetro no mÃtodo do perfil instantÃneo instalado em um Argissolo Vermelho Amarelo eutrÃfico, como tambÃm a calibraÃÃo desses sensores em campo e laboratÃrio. Os mapas obtidos atravÃs da Krigagem foram dos atributos do solo: areia, silte, argila, densidade do solo e partÃculas, porosidade e condutividade hidrÃulica saturada. Para obtenÃÃo deste ultimo foram utilizados o infiltrÃmetro de tensÃo e o permeÃmetro de carga constante.
Benard, Pascal [Verfasser], and Andrea [Akademischer Betreuer] Carminati. "Microhydrological niches in soils : how mucilage and EPS alter soil hydraulic properties and water dynamics / Pascal Benard ; Betreuer: Andrea Carminati." Bayreuth : Universität Bayreuth, 2020. http://d-nb.info/1209196573/34.
Full textLundmark, Annika. "Modelling the impacts of deicing salt on soil water in a roadside environment." Licentiate thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280.
Full textZhang, Xi. "SPATIAL ESTIMATION OF HYDRAULIC PROPERTIES IN STRUCTURED SOILS AT THE FIELD SCALE." UKnowledge, 2019. https://uknowledge.uky.edu/pss_etds/117.
Full textHerbrich, Marcus [Verfasser], and Horst H. [Akademischer Betreuer] Gerke. "Effects of erosion-affected soil evolution on water and dissolved carbon fluxes, soil hydraulic properties, and crop development of soils from a hummocky ground moraine landscape - hydropedological analysis using high precision weighing lysimeters / Marcus Herbrich ; Betreuer: Horst H. Gerke." Potsdam : Universität Potsdam, 2018. http://d-nb.info/1218403551/34.
Full textFilho, Osvaldo Guedes. "Qualidade física da cama de semeadura do solo em sistemas de manejo." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-04012013-160522/.
Full textThe seedbed is one of the most important soil physical conditions for plant growth. The evaluation of the soil physical quality in such soil environment is essential to understand the factors that affect crop development, as it is where seed germination and plant emergence and establishment take place. The objective of the experiment carried out in Brazil was to evaluate: the physical quality of the soil seedbed by the determination of its structural and physical-hydric properties; and the emergence parameters of the corn and soybean crops under long-term no tillage submitted to mechanical and biological chiseling. This experiment was carried out in Ponta Grossa, Paraná State, Brazil, at the farm-school belonging to Ponta Grossa State University. The treatments were no-tillage for 16 years, no-tillage submitted to mechanical chiseling at 0.25 m soil depth and no-tillage submitted to biological chiseling by a forage radish crop. Soil samples were collected at six and 18 months after the treatments were implemented, corresponding to a maize seedbed (October 2009) and a soybean seedbed (November 2010), for the 0 to 5 and 5 to 10 cm soil depths. For the experiments developed in the United States, the objective was to evaluate: the physical quality of the soil seedbed by the least limiting water range determination; and the wheat emergence parameters from two longterm experiments involving different cropping systems (35 years) and soil tillage systems (46 years). These experiments were conducted in an area belonging to Kansas State University located in Hays, Kansas, USA. The tillage systems experiment consisted of a wheat/sorghum/fallow rotation under conventional, reduced and no tillage. The cropping systems experiment consisted of wheat/fallow, wheat/sorghum/fallow and wheat/wheat rotations cultivated under reduced and no tillage. Soil samples were collected from the wheat seedbed (October/November 2011) at the 0 to 5 and 5 to 10 cm soil depths. The data were submitted to the variance analysis and, when significant, the means were compared by the Tukey test. The results from the experiment performed in Brazil showed that the mechanical chiseling had a lower residual effect on the soil physical properties, indicating that it is unnecessary when the aim is to improve the soil physical quality. The forage radish cultivation, as an alternative of biological chiseling, can be included in the crop rotation system once it was efficient at improving some soil physical properties. For the tillage systems experiment, which was conducted in the United States, the reduced tillage treatment resulted in a better physical condition of the soil seedbed. The conventional tillage was the treatment that presented the least favorable soil physical condition for the initial plant growth. The wheat/wheat cropping system under reduced tillage showed the best least limiting water range of the soil seedbed. The boundary line approach demonstrated that the crop emergence parameters were dependent on the physical properties of the soil seedbed.
Miwa, Masato. "Physical and Hydrologic Responses of an Intensively Managed Loblolly Pine Plantation to Forest Harvesting and Site Preparation." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/29049.
Full textPh. D.
Bažantová, Adéla. "Vliv různých agrotechnologií na fyzikální kvalitu půdy ve vybraných lokalitách v Jihomoravském kraji." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265300.
Full textUhde, Leonir Terezinha. "Sistema pedológico em um ambiente antropizado da depressão central do RS." Universidade Federal de Santa Maria, 2009. http://repositorio.ufsm.br/handle/1/3312.
Full textO presente trabalho foi realizado em uma vertente com sistema pedológico composto de Argissolo/Gleissolo, em área de pastagem, localizada em uma unidade de produção agropecuária, no município de Santa Maria RS. Objetivou-se, a caracterização morfológica e físico-hídrica e a discretização da variabilidade das perdas de solo da vertente. Foram selecionados treze perfis alinhados em uma topossequência, de um total de 57, descritos pelo método de tradagem. Após abordagem morfológica do sistema pedológico nos treze perfis, considerando a sucessão vertical e lateral, dos horizontes constatados, procederam-se as coletas de amostras para as determinações químicas e análise granulométricas, e em três orientações de amostragem as determinações físicohídricas (densidades, porosidades, retenção hídrica, condutividade hidráulica do solo saturado e permeabilidade ao ar). Além disso, foi estimada as perdas de solo através do acoplamento da Equação Universal de Perda do Solo RUSLE, em ambiente SIG. Na topossequência, três perfis foram classificados como Gleissolo e os demais como Argissolo Vermelho. Os Gleissolos apresentaram limitações variadas decorrentes do excesso de água e os Argissolos limitações químicas e físicas. O horizonte Bt nos Argissolos, encontra-se em profundidades variadas nos perfis estudados, implicando comportamentos distintos, dependendo da espessura do (s) horizontes (s) suprajacente (s). A dinâmica físico-hídrica do sistema, caracteriza-se por um comportamento distinto entre a superfície (textura média) e a subsuperfície (textura argilosa) devendo ser compreendida, considerando o conjunto dos horizontes de cada perfil, para predizer o comportamento físico-hídrico do solo. A condutividade hidráulica do solo apresentou variação ao longo dos horizontes dos perfis de solo em diferentes posições da paisagem, ocorrendo grandes diferenças entre os valores observados em superfície em relação a subsuperfície, identificando-se a existência de fluxo lateral de água no solo, principalmente, na porção da encosta e a sua variação espacial em uma sequência topográfica. Na cobertura argissólica, o bloqueio de drenagem vertical ocorre no topo do horizonte Bt, originando acima deste uma zona mais úmida. A menor retenção de água em todos os perfis ocorreu nos horizontes com textura média, Ap e A1, em todas as tensões, enquanto que nos horizontes mais profundos, Bt1 e Bt2, houve maior retenção, como consequência da diminuição do teor de areia e aumento do teor de argila. Os horizontes de transição, AB e BA, apresentaram um comportamento intermediário. A água disponível no solo para as plantas foi influenciada diretamente pela granulometria, aumentando nos horizontes com maior percentual de areia e diminuindo com o aumento da fração argila. Com o secamento do solo a permeabilidade ao ar tende a aumentar devido à drenagem da água dos poros os quais passam a conduzir maior quantidade de ar, sendo altamente dependente dos macroporos. O pisoteio animal e as operações de preparo promoveram aumento da densidade do solo, resultando na redução da porosidade total e da macroporosidade e consequentemente um aumento na microporosidade nos horizontes Ap e A1, os quais sofrem os efeitos diretos das atividades antrópicas. A aplicação de metodologia que acopla a RUSLE em ambiente SIG, permitiu a discretização da variabilidade espacial dos fatores que influenciam as perdas, bem como as perdas de solo de uma vertente da Depressão Central do RS.
Suchá, Kateřina. "Hodnocení kvality/zdraví půdy v blízkosti obce Bohaté Málkovice." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392022.
Full textGill, Shahid Maqsood. "Temporal variability of soil hydraulic properties under different soil management practices." Thesis, 2012. http://hdl.handle.net/10214/4952.
Full textKosgei, Job Rotich. "Rainwater harvesting systems and their influences on field scale soil hydraulic properties, water fluxes and crop production." Thesis, 2009. http://hdl.handle.net/10413/632.
Full textKröner, Eva. "Water dynamics in the rhizosphere." Doctoral thesis, 2016. http://hdl.handle.net/11858/00-1735-0000-0028-86F7-1.
Full textCejpek, Jiří. "Vodní režim půd rekultivovaných a nerekultivovaných výsypek po těžbě uhlí." Doctoral thesis, 2018. http://www.nusl.cz/ntk/nusl-392477.
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