农业工程学报2011，Vol.27Issue(3)：6-12,7.DOI:10.3969/j.issn.1002-6819.2011.03.002
Hydrus-1D模型在田间水循环规律分析中的应用及改进
Application and improvement of Hydrus-1D model for analyzing water cycle in an agricultural field
摘要
Abstract
Water cycle during 2006-2009 in a typical agricultural field of the Weishan irrigation district, which is located along the downstream of Yellow River in the North China Plain, was analyzed using the Hydrus-1D model.The equation for calculating the bulk surface resistance was modified according to the observed data.The simulated ET was compared with the observed ET by the eddy covariance system, and the result showed that simulation using modified resistance equation provided much better results than that of the original model.ET analysis showed that, for areas covered with seasonal vegetation, LAI determined the seasonal variation of ET, while weather condition determined ET variation at a much smaller time scale (e.g., one week).Comparing the simulated soil water content with the observed data by TDR, showed that the model could simulate soil water appropriately.Water balance analysis showed that about 80％ of the rainfall and irrigation were consumed by ET, and drainage from the field mainly occurred during rainy season.关键词
蒸发/蒸腾/模型/Hydrus-1D模型/位山灌区/水量平衡Key words
evaporation/ transpiration/ models/ Hydrus-1D model/ Weishan irrigation district/ water balance分类
农业科技引用本文复制引用
马欢,杨大文,雷慧闽,蔡建峰,楠田哲也..Hydrus-1D模型在田间水循环规律分析中的应用及改进[J].农业工程学报,2011,27(3):6-12,7.基金项目
国家自然科学基金国际合作与交流项目(50811140089) （50811140089）
教育部博士点基金项目(20070003075) （20070003075）
