干旱区生态环境知识资源中心(Arid): Numerical simulation of soil water dynamics in a drip irrigated cotton field under plastic mulch

Arid

	Numerical simulation of soil water dynamics in a drip irrigated cotton field under plastic mulch
	Liu Meixian; Yang Jingsong; Li Xiaoming; Yu Mei; Wang Jin
来源期刊	Pedosphere
ISSN	1002-0160
出版年	2013
卷号	23 期号:5 页码:620-635
英文摘要	Drip irrigation under plastic mulch has been widely applied in arid Northwest China as a water-saving irrigation technology. A comprehensive knowledge of the distribution and movement of soil water in root zone is essential for the design and management of irrigation regimes. Simulation models have been proved to be efficient methods for this purpose. In this study, the numerical model Hydrus-2D was used to simulate the temporal variations of soil water content in a drip irrigated cotton field under mulching. A concept of partitioning coefficient, calibrated to be 0.07, was introduced to describe the effect of plastic mulch on prevention of evaporation. The soil hydraulic parameters were optimized by inverse solution using the field data. At the optimized conditions, the model was used to predict soil water content for four field treatments. The agreements between the predictions and observations were evaluated using coefficient of determination (R~2) and root mean square error (RMSE). The results suggested that the model fairly reproduced the variations in soil water content at all locations in four treatments, with R~2 ranging from 0.582 to 0.826 and RMSE from 0.029 to 0.050 cm~3 cm~(-3), indicating that the simulations agreed well with the observations.
英文关键词	arid area drip irrigation evapotranspiration Hydrus-2D model root zone
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:4942442
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335266
作者单位	Liu Meixian, Institute of Soil Science, Chinese Academy of Sciences, State Key Laboratory of Soil and Sustainable Agriculture, Nanjing, Jiangsu 210008, China.; Yang Jingsong, Institute of Soil Science, Chinese Academy of Sciences, State Key Laboratory of Soil and Sustainable Agriculture, Nanjing, Jiangsu 210008, China.; Li Xiaoming, Institute of Soil Science, Chinese Academy of Sciences, State Key Laboratory of Soil and Sustainable Agriculture, Nanjing, Jiangsu 210008, China.; Yu Mei, Water Conservancy Bureau of Yuhuatai, Nanjing, Jiangsu 210012, China.; Wang Jin, Wulanwusu Agro-Meteorological Experiment Station, Shihezi, Xinjiang 832021, China.
推荐引用方式 GB/T 7714	Liu Meixian,Yang Jingsong,Li Xiaoming,et al. Numerical simulation of soil water dynamics in a drip irrigated cotton field under plastic mulch[J],2013,23(5):620-635.
APA	Liu Meixian,Yang Jingsong,Li Xiaoming,Yu Mei,&Wang Jin.(2013).Numerical simulation of soil water dynamics in a drip irrigated cotton field under plastic mulch.Pedosphere,23(5),620-635.
MLA	Liu Meixian,et al."Numerical simulation of soil water dynamics in a drip irrigated cotton field under plastic mulch".Pedosphere 23.5(2013):620-635.