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Dissertations / Theses on the topic 'Soil water balance model'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Al-Ali, Mahmoud. "Soil water conservation and water balance model for micro-catchment water harvesting system." Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/10941.

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A simple water balance model was applied to a micro-catchment water harvesting system for a semi-arid area in the North-Eastern part of Jordan. Two Negarim micro-catchment water harvesting systems were built at Al-Khanasri research station. A Randomized complete block design (RCBD) in factorial combination was used with six treatments and three replicates. Each plot was divided into two parts; a runoff area, and a run-on area. Two different treatments were used for the catchment area, these were: compacted (T1) and Natural treatments (T2). Three treatments were used for the run-on area, these

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2

Thadei, Simon Yuda. "Evaluation of effective rainfall by a physically-based soil-water balance model." Thesis, University of Newcastle Upon Tyne, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316263.

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3

Abebe, Yibekal Alemayehu. "Managing the soil water balance of hot pepper (Capsicum annuum L.) to improve water productivity." Thesis, University of Pretoria, 2010. http://hdl.handle.net/2263/25257.

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A series of field, rainshelter, growth cabinet and modelling studies were conducted to investigate hot pepper response to different irrigation regimes and row spacings; to generate crop-specific model parameters; and to calibrate and validate the Soil Water Balance (SWB) model. Soil, climate and management data of five hot pepper growing regions of Ethiopia were identified to develop irrigation calendars and estimate water requirements of hot pepper under different growing conditions. High irrigation regimes increased fresh and dry fruit yield, fruit number, harvest index and top dry matter pr

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4

Larsbo, Mats. "An improved dual-permeability model of solute transport in structured soils : model development and parameter identification in laboratory and field experiments /." Uppsala : Dept. of Soil Sciences, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/200551.pdf.

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5

Pollacco, Joseph. "Inverse methods to determine parameters in a physically based model of soil water balance." Thesis, University of Newcastle Upon Tyne, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413964.

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6

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.

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7

Pinto, Victor Meriguetti. "Simulation of water and nitrogen dynamics in a Cerrado soil under coffee cultivation using SWAP and ANIMO models." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/64/64134/tde-02022016-105753/.

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Agriculture when only focused on production leads to an unsustainable use of inputs with negative consequences to the environment and human health. One consequence of the excessive use of fertilizers is the pollution of surface and underground water resources in agricultural eco-systems and their boundaries. The Brazilian Cerrado has been suffering the transformations of the intensive agriculture during the last decades. Due to the poor fertility of soils, in general very sandy and of low pH, the use of agricultural inputs is intensified and the nutrient downward transport by leaching becomes

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8

Dlamini, Musa V. "Short-Term Water Use Dynamics in Drainage Lysimeters." DigitalCommons@USU, 2003. https://digitalcommons.usu.edu/etd/5877.

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Turfgrass water use (seasonal turfET) and crop coefficients were determined and a mathematical soil-water balance model for non-weighing drainage lysimeters, which simulates the occurrence (timing and amount) of drainage, was developed. Pairs of non-weighing drainage lysimeters were used to determine crop coefficients for turfgrass in four locations in the state of Utah: Logan Golf and Country Club, Murray Golf Course, Brigham Young University (Spanish Fork) Experiment Farm, and Sunbrook Golf Course (St. George). Daily weather data including air temperature, relative humidity, average wind tra

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9

Kilemo, Dominico Benedicto. "Impact of Land Management Practices on Water Balance and Sediment Transport in the Morogoro Catchment, Uluguru Mountains (Tanzania)." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-233223.

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Tanzania, like other developing countries in the tropics is severely affected by the degradation of water resources owing to improper land management practices. Such practices affect water supply through soil erosion which does not only cause sedimentation of rivers and water bodies but also leads to a reduction in the rainwater infiltration capacity of soils. This thesis seeks to demonstrate how the implementation of proper land management measures can reduce soil erosion and increase water supply in the Morogoro River catchment (Uluguru Mountains). The proper practices referred to are the s

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10

Manikku, Acharige Niranjan Sanjeeva Wimalathunge. "Space-time modelling of soil moisture: prediction and forecasting for improved agricultural management." Thesis, The University of Sydney, 2019. http://hdl.handle.net/2123/21122.

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Knowledge of soil moisture is crucial in every agricultural system. Accurate soil moisture estimates are valuable guides to management decisions such as crop selection and estimation of yield potential. However, soil moisture is highly variable temporally and spatially in the landscape and very challenging to monitor. Existing soil moisture monitoring approaches lack in appropriate resolution for current agricultural requirements. Therefore, this thesis develops novel space-time models for predicting and forecasting soil moisture at a 90 m spatial resolution. A water balance model (unsaturate

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11

Junior, Paulo Ponce Arroio. "Aprimoramento das rotinas e parâmetros dos processos hidrológicos do modelo computacional Soil and Water Assessment Tool - SWAT." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/18/18139/tde-25052017-084925/.

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O modelo Soil and Water Assessment Tool (SWAT) tem sido utilizado para avaliar os impactos do uso e manejo da terra nos recursos hídricos, sedimentos e agroquímicos em diversas escalas e condições ambientais em todo o mundo. Entretanto, pelo fato de ter sido desenvolvido em centros de pesquisa norte-americanos, alguns parâmetros e rotinas de simulação não refletem adequadamente determinados processos de bacias localizadas em regiões tropicais. Nesse sentido, o presente trabalho visou aprimorar a modelagem hidrológica do SWAT através da revisão e modificação de processos relacionados à simulaçã

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12

Bauerle, Markus. "Adapting the Hydrologic Evaluation of Landfill Performance (H. E. L. P) model to the climatic and soil characteristics of Queensland." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/95943/4/Markus_Bauerle_Thesis.pdf.

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This thesis details the development a new version of the Hydrologic Evaluation of Landfill Performance (HELP) model, a tool used in assessing the potential of landfills to produce toxic leachate. The work has led to the development of a new software version of the HELP model, which includes Queensland specific weather and soil data and is more user friendly than the original version. The primary outcome of the research is the creation of a tool that can be used to meet the regulatory requirements for water balance modelling as part of the landfill design and evaluation process in Queensland.

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13

Sun, Jian. "Parameter estimation of coupled water and energy balance models based on stationarity constraints of soil moisture and temperature." Thesis, Boston University, 2012. https://hdl.handle.net/2144/31613.

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Thesis (Ph.D.)--Boston University<br>PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you.<br>A new method is developed for estimating the parameters of land surface water and energy balance models through enforcement of stationary constraints on soil moisture and temperature. Through conditional aver

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14

Sehgal, Vinit. "Near Real-time Seasonal Drought Forecasting and Retrospective Drought Analysis using Simulated Multi- layer Soil Moisture from Hydrological Models at Sub- Watershed Scales." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78623.

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This study proposes a stratified approach of drought severity assessment using multi-layer simulated soil moisture. SWAT (Soil and Water Assessment Tool) models are calibrated for 50 watersheds in the South-Atlantic Gulf region of the Southeastern US and a high-resolution daily soil moisture dataset is obtained at Hydrologic Unit Code (HUC-12) resolution for a period of January 1982 through December 2013. A near real-time hydrologic simulation framework by coupling the calibrated SWAT models with the National Centers for Environmental Prediction (NCEP) coupled forecast system model version 2 (

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15

Mannschatz, Theresa. "Site evaluation approach for reforestations based on SVAT water balance modeling considering data scarcity and uncertainty analysis of model input parameters from geophysical data." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-175309.

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Extensive deforestations, particularly in the (sub)tropics, have led to intense soil degradation and erosion with concomitant reduction in soil fertility. Reforestations or plantations on those degraded sites may provide effective measures to mitigate further soil degradation and erosion, and can lead to improved soil quality. However, a change in land use from, e.g., grassland to forest may have a crucial impact on water balance. This may affect water availability even under humid tropical climate conditions where water is normally not a limiting factor. In this context, it should also be con

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Tironi, Luana Fernandes. "SIMANIHOT: UM MODELO DE SIMULAÇÃO DA CULTURA DA MANDIOCA E SUA APLICAÇÃO EM CLIMA FUTURO NO RIO GRANDE DO SUL." Universidade Federal de Santa Maria, 2016. http://repositorio.ufsm.br/handle/1/3636.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Crop models are tools that can help to assist in decision making on crops management and also in studies of the impact of future climate scenarios. The objectives of this thesis were (i) to develop a cassava simulation model that takes into account the effects of soil moisture and CO2 concentration on growth, development and tuber yield, and (ii) to simulate cassava yield in future climate scenarios for the Rio grande do Sul State. Model calibration was performed with data collected from experiments conducted in Santa Maria in cr

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Lopes, João Rui Rolim Fernandes Machado. "Metodologias para avaliação dos impactes das mudanças climáticas na agricultura de regadio e nos sistemas de rega." Doctoral thesis, ISA, 2013. http://hdl.handle.net/10400.5/6146.

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Doutoramento em Engenharia dos Biossistemas - Instituto Superior de Agronomia<br>The different climate change scenarios forecast for Portugal an increase in air temperature associated with a reduction of the precipitation, which should implies a reduction in crop yields and a rise of water demand for irrigation. In this work a methodology was created, based on the development of software tools, with the objective of evaluating the impacts of climate change on irrigated agriculture. The proposed methodology consists in the combined use of a soil water balance model (IrrigRotation), geograp

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18

Gogo-Abite, Ikiensinma. "Effluent Water Quality Improvement Using Silt Fences and Stormwater Harvesting." Doctoral diss., University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5226.

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Construction sites are among the most common areas to experience soil erosion and sediment transport due to the mandatory foundation tasks such as excavation and land grubbing. Thus, temporary sediment barriers are installed along the perimeter to prevent sediment transport from the site. Erosion and sediment transport control measures may include, but not limited to, physical and chemical processes such as the use of a silt fence and polyacrylamide product. Runoff from construction sites and other impervious surfaces are routinely discharged into ponds for treatment before being released into

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19

Mello, Eloy Lemos de. "Modelo de suporte à avaliação do impacto do uso e manejo do solo no balanço hídrico e nas perdas de solo." Universidade Federal de Viçosa, 2009. http://locus.ufv.br/handle/123456789/668.

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Made available in DSpace on 2015-03-26T12:31:11Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1048332 bytes, checksum: d2cc8bcdce04c4c44c28d4f3c1b64a84 (MD5) Previous issue date: 2009-09-22<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>The main form of agricultural land degradation is the soil water erosion which is caused by the action of rain and runoff, being affected by a large number of natural and antropic agents. Moreover, much of the water that flows over the soil surface represents a reduction in the volume of water that reaches the water table. The models

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20

Moreira, Virnei Silva. "Balanço de água no ciclo da cultura de soja: representação no modelo de vegetação dinâmica Agro-IBIS." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/3908.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Exchanges of water in the soil-plant-atmosphere are controlled by physical-hydric soils, which in turn are highly variable in space and very sensitive to the use and soil management, especially in an agroecosystem. Precipitation, runoff, soil water storage and exchange of water vapor between the surface-atmosphere obtained from the eddy covariance and hydro-physical properties of soil were analyzed during the growing season (2009/2010) for no-till systems (NT) and conventional tillage (PC) in the cycle of soybean, in Cruz Alta, nor

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21

Guillet, François, and Georges Pedro. "Etude et modelisation hydropedologique d'un bassin versant et modelisation des comportements hydriques de ce bassin (utilistion du modele source)." Paris 6, 1991. http://www.theses.fr/1991PA066668.

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Cette these a pour objectif la mise au point d'une modelisation hydropedologique d'un bassin versant prealable a une modelisation des comportements hydriques de ce bassin. Les conceptions de la modelisation hydrologique sont traditionnellement orientees vers la recherche des crues maximales pour les etudes d'ouvrages d'art. Elles ont cependant evolue et se preoccupent egalement aujourd'hui d'etudier les phenomenes plus globalement en etudiant les besoins en eau des cultures et l'assainissement des sols. Nous exposons les principes et le fonctionnement theorique d'un modele hydropedologique spa

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22

Amazirh, Abdelhakim. "Monitoring crops water needs at high spatio-temporal resolution by synergy of optical/thermal and radar observations." Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30101.

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L'optimisation de la gestion de l'eau en agriculture est essentielle dans les zones semi-arides afin de préserver les ressources en eau qui sont déjà faibles et erratiques dues à des actions humaines et au changement climatique. Cette thèse vise à utiliser la synergie des observations de télédétection multispectrales (données radar, optiques et thermiques) pour un suivi à haute résolution spatio-temporelle des besoins en eau des cultures. Dans ce contexte, différentes approches utilisant divers capteurs (Landsat-7/8, Sentinel-1 et MODIS) ont été developpées pour apporter une information sur l'

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Qureshi, Suhail Ahmad. "Soil water balance of intercropped corn under water table management." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23289.

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A one year water table management field study was conducted on a Soulanges sandy loam soil in Soulanges county, Quebec. Two controlled water table levels, i.e. 0.5 m and 0.75 m from the soil surface, as well as free outlet conventional drainage treatments were established in monocropped corn (Zea mays L.) and corn intercropped with ryegrass (Lolium multiflorum Lam) plots.<br>Cropping system showed no significant effects on evapotranspiration, and on soil moisture distribution. It was observed that the 0.5 m and 0.75 m controlled water tables (CWT) provided the same soil moisture trends in both

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24

NORMAND, BEATRICE. "Etude experimentale et modelisation du devenir de l'azote dans le systeme sol-plante-atmosphere." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10196.

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Cette these concerne les resultats d'une experimentation intensive et pluridisciplinaire, mise en place en 1991 a la cote st andre (isere) sur une parcelle de 2 ha, afin de caracteriser la reponse d'une culture de mais a l'irrigation et a la fertilisation en situation de techniques culturales traditionnelles. Le but est de proposer des modifications permettant de limiter les pertes en eau et en nitrates, tout en maintenant un niveau de rendement economique. Elle comporte deux volets: experimentation et modelisation. La mise en uvre d'une metrologie non destructive (humidimetrie neutronique, te

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Buchanan, Margaret MacNeill. "Soil Water Flow and Irrigated Soil Water Balance in Response to Powder River Basin Coalbed Methane Product Water." Thesis, Montana State University, 2005. http://etd.lib.montana.edu/etd/2005/buchanan/BuchananM0505.pdf.

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A repacked soil columns experiment and a series of computer soil water balance simulations were conducted to examine potential impacts of coalbed methane (CBM) water from Montana's Powder River Basin (PRB) on soil water flow and water balance in PRB soils. CBM water is often high in sodium, which may separate soil clay particles, particularly after soil exposure to low-salinity rainfall or snowmelt, and when soils contain expansible smectite clay minerals. Aggregates in soils exposed to sodic water may swell and slake, and clays and other fine particles may disperse, clogging soil pores and sl

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Oliveira, Paulo Tarso Sanches de. "Water balance and soil erosion in the Brazilian Cerrado." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-16012015-170452/.

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Deforestation of the Brazilian savanna (Cerrado) region has caused major changes in hydrological processes. These changes in water balance and soil erosion are still poorly understood, but are important for making land management decisions in this region. Therefore, it is necessary to understand the magnitudes of hydrological processes and soil erosion changes on local, regional and continental scales, and the consequences that are generated. The main objective of the study presented in this doctoral thesis was to better understand the mechanism of hydrological processes and soil erosion in th

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27

Haigh, R. A. "Water balance and water quality studies in an underdrained clay soil catchment." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371543.

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28

Goshime, Demelash. "Intégration des données de précipitations satellitaires et au sol pour l'évaluation des ressources en eau dans le bassin des lacs de la vallée centrale du Rift, en Éthiopie." Thesis, CY Cergy Paris Université, 2020. http://www.theses.fr/2020CYUN1066.

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Cette étude porte principalement sur l’évaluation d’estimations de précipitations par satellite à haute résolution pour l’hydrologie du bassin central de lacs de la vallée du Rift en Éthiopie. La première partie est consacrée à la correction du biais de pluie par satellite pour la simulation du débit et du bilan hydrique au niveau des lacs. Ensuite, l'impact du captage d'eau et d'autres facteurs sur le bilan hydrique du lac, en particulier sur le niveau et la variation du volume de l'eau, sera étudié. Enfin, l’étude quantifiera les demandes actuelles et futures et évaluera ainsi l’impact de di

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29

Mhlauli, Ntuthuzelo Columbus. "Growth analysis and soil water balance of selected vegetable crops." Diss., University of Pretoria, 2000. http://hdl.handle.net/2263/26200.

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Please read the abstract in the section 00front of this document<br>Dissertation (M Inst Agrar (Horticulture Science))--University of Pretoria, 2000.<br>Plant Production and Soil Science<br>unrestricted

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Chen, Liping. "Soil Characteristics Estimation and Its Application in Water Balance Dynamics." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc9789/.

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This thesis is a contribution to the work of the Texas Environmental Observatory (TEO), which provides environmental information from the Greenbelt Corridor (GBC) of the Elm Fork of the Trinity River. The motivation of this research is to analyze the short-term water dynamic of soil in response to the substantial rainfall events that occurred in North Texas in 2007. Data collected during that year by a TEO soil and weather station located at the GBC includes precipitation, and soil moisture levels at various depths. In addition to these field measurements there is soil texture data obtained fr

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Chen, Liping Acevedo Miguel Felipe. "Soil characteristics estimation and its application in water balance dynamics." [Denton, Tex.] : University of North Texas, 2008. http://digital.library.unt.edu/permalink/meta-dc-9789.

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32

Olivera, Guerra Luis Enrique. "Suivi des ressources en eau des cultures irriguées par télédétection multi-spectrales optique/thermique." Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30324.

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L'agriculture est une pression importante sur les ressources en eau, consommant plus de 70% de l'eau douce mobilisée à l'échelle mondiale. Cependant, les informations sur l'irrigation, pourtant cruciales pour assurer une durabilité de la ressource, sont souvent indisponibles. Par conséquent, il est essentiel d'estimer les différents termes du bilan d'eau des cultures à grande échelle. Cette thèse vise à intégrer les données de télédétection optique/thermique dans un modèle simplifié de bilan d'eau des cultures pour le suivi du bilan d'eau des zones agricoles irriguées. Une approche innovante e

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Mbarushimana, Kagabo Desire. "Modelling the soil water balance of potatoes for improved irrigation management." Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-07192007-134318.

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Tesfamariam, Eyob Habte. "Modelling the soil water balance of canola Brassica napus L (Hyola 60)." Diss., Pretoria : [s.n.], 2004. http://upetd.up.ac.za/thesis/available/etd-09212004-082030.

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Gärdenäs, Annemieke. "Soil organic matter in forest soils : effects of climate and water balance /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1998. http://epsilon.slu.se/avh/1998/91-576-5530-8.gif.

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Moreira, LuÃs ClÃnio JÃrio. "Estimating irrigated watermelon evapotranspiration using sebal, soil-water balance and eddy correlations." Universidade Federal do CearÃ, 2009. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=5217.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>In applications of the SEBAL (Surface Energy Balance Algorithm for Land) algorithm parameters for physical processes adjusted for other regions of the planet are commonly used. Therefore, there is a need for validation of the estimates made with the algorithm compared with other conventional methods of estimating evapotranspiration. Thus, this study main goal was to evaluate the satellite-based algorithm to estimate evapotranspiration of irrigated watermelon using as comparative methods: soil water balance and eddy correlation. T

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Rim, Chang-Soo. "Daily estimation of local evapotranspiration using energy and water balance approaches." Diss., The University of Arizona, 1995. http://hdl.handle.net/10150/191190.

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Meteorological and environmental (i.e. soil water content) data measured from semiarid watersheds (Lucky Hills and Kendall) during the summer rainy and winter periods were used to study the interrelationships between variables, and to evaluate the effects of variables on the daily estimation of actual evapotranspiration (AET). The relationship between AET and potential evapotranspiration (PET) as a function of an environmental factor was the major consideration of this research. The relationship between AET and PET as a function of soil water content as suggested by Thornthwaite-Mather, Morton

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Gustafsson, David. "Boreal land surface water and heat balance : Modelling soil-snow-vegetation-atmosphere behaviour." Doctoral thesis, KTH, Mark- och vattenteknik, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3406.

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The water and heat exchange in thesoil-snow-vegetation-atmosphere system was studied in order toimprove the quantitative knowledge of land surface processes.In this study, numerical simulation models and availabledatasets representing arable land, sub-alpine snowpack, andboreal forest were evaluated at both diurnal and seasonaltimescales. Surface heat fluxes, snow depth, soil temperatures andmeteorological conditions were measured at an agriculturalfield in central Sweden during three winters and two summersfrom 1997 to 2000 within the WINTEX project. A one-dimensionalsimulation model (COUP) w

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Eilers, V. H. M. "The estimation of groundwater recharge by soil water balance in semi-arid regions." Thesis, Cranfield University, 2002. http://dspace.lib.cranfield.ac.uk/handle/1826/4215.

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Quantification of groundwater recharge is a crucial prerequisite for sustainable groundwater resource management, particularly in semi-arid areas where there are large demands for groundwater supplies. This research presents an alternative approach for recharge estimation based on the soil water balance technique. The purpose is to develop a model which provides a suitable balance between physical credibility and data which realistically can be gathered. A spreadsheet model was written based on the conceptual representation of the principal physical processes which actually affect recharge in

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Geremew, Eticha Birdo. "Modelling the soil water balance to improve irrigation management of traditional irrigation schemes in Ethiopia." Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-05242009-121531.

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Hakamada, Rodrigo Eiji. "Physiological responses and soil water balance of clonal Eucalyptus under contrasting spacings and genotypes." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-28112016-113417/.

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Planting density and genotype have close relationship with the water relations in plants. The scenario of increased occurrence of extreme weather events and the change of Eucalyptus forest plantations to high water deficit regions, led us to the three key questions of this study: (1) What is the relationship between planting density and the potential water stress? (2) The planting spacing interferes the water use efficiency (WUE), i.e. the amount of biomass produced by the amount of water transpired? (3) Can the planting density change the soil water balance (BHS)? To develop this work, we set

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Anar, Mohammad Jahidul. "Sugarbeet Model Development for Soil and Water Quality Assessment." Diss., North Dakota State University, 2018. https://hdl.handle.net/10365/27896.

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Sugarbeet (Beta vulgaris) is considered as one of the most viable alternatives to corn for biofuel production as it may be qualified as ?advanced? biofuel feedstocks under the ?EISA 2007?. Production of deep rooted sugarbeet may play a significant role in enhancing utilization of deeper layer soil water and nutrients, and thus may significantly affect soil health and water quality through recycling of water and nutrients. A model can be useful in predicting the sugarbeet growth, and its effect on soil and water quality. A sugarbeet model was developed by adopting and modifying the Crop Environ

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Möller, Jason John. "The use of remote sensing for soil moisture estimation using downscaling and soil water balance modelling in Malmesbury and the Riebeek Valley." Thesis, University of the Western Cape, 2014. http://hdl.handle.net/11394/4105.

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>Magister Scientiae - MSc<br>Soil moisture forms an integral part of the hydrological cycle and exerts considerable influence on hydrological processes at or near the earth’s surface. Knowledge of soil moisture is important for planning and decision-making in the agricultural sector, land and water conservation and flood warning. Point measurements of soil moisture, although highly accurate, are time consuming, costly and do not provide an accurate indication of the soil moisture variation over time and space as soil moisture has a high degree of spatial and temporal variability. The spatial v

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HAMED, LAMY MAMDOH MOHAMED. "NITROGEN BALANCE IN SOIL PROFILE AS AFFECTED BY DIFFERENT SOIL TYPE, SOIL WATER REGIMES, NITROGEN RATE AND APPLICATION METHODS USING 15N TRACER TECHNIQUE." Doctoral thesis, Università degli Studi di Milano, 2014. http://hdl.handle.net/2434/232140.

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The interaction effect of “Soil type, Soil water regime, Nitrogen fertilizer application Rates and Timing” on Nitrogen balancein soil were studied; in terms of nitrogen gained by plant portions, remained in soil, and losses through different ways under wheat (Triticum aestivum L. Giza 168), in order to identify the most proper and effective combinations of above-studied variables that provides a satisfactory grain wheat yield and minimizes the use of chemical nitrogen fertilizers, to save the surrounding environment and to achieve good water saving. Two fields of experiments were carried out

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Rollet, Fabien Alexandre. "A conceptual water balance model of paved surfaces in urban catchments." Thesis, University of the West of Scotland, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.730019.

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Pinheiro, Everton Alves Rodrigues. "Hydrological modeling of soil-water availability in the Caatinga biome." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11152/tde-10112016-170843/.

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Northeastern Brazil is hydrologically characterized by recurrent droughts leading to a highly vulnerable natural water resource system. The region contains the Caatinga biome, a sparsely studied ecosystem, covering an area of approximately 800,000 km2. Reduced wateravailability is projected to take place in large regions of the globe, including Northeastern Brazil. Given the strong interactions between climate and vegetation, research has addressed climate change effects on natural and agricultural ecosystems. In this context, soil hydraulic properties are essential to assess soil water flow,

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Krümmelbein, Julia. "Influence of various grazing intensities on soil stability and water balance of a steppe soil in Inner Mongolia, P.R. China /." Kiel : Inst. für Pflanzenernährung und Bodenkunde, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016796677&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Gaze, Stephen Richard. "Water balance of farmer-managed millet and fallow-savannah on sandy soils in south west Niger." Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320105.

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Martinez, Baquero Guillermo Felipe. "CONTINENTAL SCALE DIAGNOSTIC EVALUATION OF MONTHLY WATER BALANCE MODELS FOR THE UNITED STATES." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/145734.

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Water balance models are important for the characterization of hydrologic systems, to help understand regional scale dynamics, and to identify hydro-climatic trends and systematic biases in data. Because existing models have, to-date, only been tested on data sets of limited spatial representativeness and extent, it has not yet been established that they are capable of reproducing the range of dynamics observed in nature. This dissertation develops systematic strategies to guide selection of water balance models, establish data requirements, estimate parameters, and evaluate performance. Throu

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Dolling, P. J. "Lucerne (Medicago sativa) productivity and its effect on the water balance in southern Western Australia /." Connect to this title, 2006. http://theses.library.uwa.edu.au/adt-WU2006.0108.

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