globalchange  > 气候变化事实与影响
DOI: 10.5194/hess-19-1193-2015
Scopus记录号: 2-s2.0-84924260813
论文题名:
Use of field and laboratory methods for estimating unsaturated hydraulic properties under different land uses
作者: Siltecho S; , Hammecker C; , Sriboonlue V; , Clermont-Dauphin C; , Trelo-Ges V; , Antonino A; C; D; , Angulo-Jaramillo R
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2015
卷: 19, 期:3
起始页码: 1193
结束页码: 1207
语种: 英语
Scopus关键词: Agriculture ; Land use ; Soil surveys ; Soils ; Solute transport ; Water management ; Agricultural system ; Laboratory methods ; Laboratory techniques ; Measurement methods ; Non-parametric statistics ; Pedo-transfer functions ; Soil hydraulic properties ; Unsaturated hydraulic properties ; Parameter estimation ; accuracy assessment ; field method ; hydraulic property ; laboratory method ; land use ; measurement method ; numerical method ; sandy soil ; tree planting ; Thailand ; Hevea brasiliensis
英文摘要: Adequate water management is required to improve the efficiency and sustainability of agricultural systems when water is scarce or over-abundant, especially in the case of land use changes. In order to quantify, to predict and eventually to control water and solute transport into soil, soil hydraulic properties need to be determined precisely. As their determination is often tedious, expensive and time-consuming, many alternative field and laboratory techniques are now available. The aim of this study was to determine unsaturated soil hydraulic properties under different land uses and to compare the results obtained with different measurement methods (Beerkan, disc infiltrometer, evaporation, pedotransfer function). The study has been realized on a tropical sandy soil in a mini-watershed in northeastern Thailand. The experimental plots were positioned in a rubber tree plantation in different positions along a slope, in ruzi grass pasture and in an original forest site. Non-parametric statistics demonstrated that van Genuchten unsaturated soil parameters (Ks, α and n) were significantly different according to the measurement methods employed, whereas the land use was not a significant discriminating factor when all methods were considered together. However, within each method, parameters n and α were statistically different according to the sites. These parameters were used with Hydrus1D for a 1-year simulation and computed pressure head did not show noticeable differences for the various sets of parameters, highlighting the fact that for modeling, any of these measurement methods could be employed. The choice of the measurement method would therefore be motivated by the simplicity, robustness and its low cost. © Author(s) 2015.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78585
Appears in Collections:气候变化事实与影响

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作者单位: Department of Plant Science and Land Resource, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand; Institut de Recherche Pour le Développement (IRD), UMR 210, place Viala, Montpellier, France; Department of Agricultural Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen, Thailand; Ground Water Research Center, Khon Kaen University, Khon Kaen, Thailand; Land Development Department, Ministry of Agriculture, Land Development Regional Office No. 5, Khon Kaen, Thailand; Universidade Federal de Pernambuco, Centro de Tecnologia e Geociências, Departamento de Energia Nuclear, Recife, Brazil; Université de Lyon - UMR5023 Ecologie des Hydrosystèmes Naturels et Anthropisés, Université Lyon 1, CNRS, 3 rue Maurice Audin, Vaulx-en-Velin, France

Recommended Citation:
Siltecho S,, Hammecker C,, Sriboonlue V,et al. Use of field and laboratory methods for estimating unsaturated hydraulic properties under different land uses[J]. Hydrology and Earth System Sciences,2015-01-01,19(3)
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