Estimation of soil water content and evapotranspiration from irrigated cropland on the North China Plain

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Show simple item record Jiang, Jie en_US Zhang, Yongqiang en_US Wegehenkel, Martin en_US Yu, Qiang en_US Xia, Jun en_US
dc.contributor.editor en_US 2010-05-28T09:44:38Z 2010-05-28T09:44:38Z 2008 en_US
dc.identifier 2008004690 en_US
dc.identifier.citation Jiang Jie et al. 2008, 'Estimation of soil water content and evapotranspiration from irrigated cropland on the North China Plain', Wiley-V C H Verlag Gmbh, vol. 171, no. 5, pp. 751-761. en_US
dc.identifier.issn 1436-8730 en_US
dc.identifier.other C1UNSUBMIT en_US
dc.description.abstract For nearly 30 y, cropland on the North China Plain (NCP) has been irrigated primarily by pumping groundwater with no sustainable management strategy. This has caused a continuous decline of the water table. A sustainable groundwater management and irrigation strategy must be established in order to prevent further decline of the water table; to do this, one must quantify soil water content and daily rates of deep percolation and locate evapotranspiration from irrigated cropland. For that purpose, we developed a three-layer soil-water balance (SWB) model based on an approach described by Kendy et al. (2003). In this model, the unsaturated soil zone is divided into three layers: a surface active layer, a middle active soil layer, and a lowest passive soil layer. The middle and the lowest layers dynamically change with the development of crop rooting depth. A simple "tipping bucket" routine and an exponential equation are used to redistribute soil water in the three soil layers. The actual evapotranspiration estimated is partitioned into soil evaporation and crop transpiration using a dual crop coefficient reference approach. At first, the model was calibrated using data obtained from five deficiently irrigated field plots located at an experimental site in the NCP between 1998 and 2003. Then, the model was validated by comparing estimated soil water contents with measured ones at three other plots with nondeficient irrigation. en_US
dc.language en_US
dc.publisher Wiley-VCH Verlag Gmbh en_US
dc.relation.isbasedon en_US
dc.title Estimation of soil water content and evapotranspiration from irrigated cropland on the North China Plain en_US
dc.parent Journal Of Plant Nutrition And Soil Science-Zeitschrift Fur Pflanzenernahrung Und Bodenkunde Journal Of ... en_US
dc.journal.volume 171 en_US
dc.journal.number 5 en_US
dc.publocation Weinheim, Germany en_US
dc.identifier.startpage 751 en_US
dc.identifier.endpage 761 en_US SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 070300 en_US
dc.personcode 0000050018 en_US
dc.personcode 0000050019 en_US
dc.personcode 0000050020 en_US
dc.personcode 107001 en_US
dc.personcode 0000050017 en_US
dc.percentage 100 en_US Plant Biology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity 761 en_US
dc.description.keywords soil water balance; soil water content; evapotranspiration; cropland; model; North China Plain en_US
dc.staffid en_US

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