A new method to estimate soil water infiltration based on a modified Green-Ampt model

doi:10.1016/j.still.2016.03.003

CORC > 中国农业科学院 > 农业环境与可持续发展研究所 > 旱作节水研究室

	A new method to estimate soil water infiltration based on a modified Green-Ampt model
	Mao, Lili 1,2; Li, Yuzhong 1; Hao, Weiping 1; Zhou, Xiaoni 3; Xu, Chunying 1; Lei, Tingwu 2
刊名	SOIL & TILLAGE RESEARCH
	2016
卷号	161 页码:31-37
关键词	Infiltration measurement Green-Ampt model Soil water distribution
ISSN号	0167-1987
DOI	10.1016/j.still.2016.03.003
通讯作者	Mao, Lili
英文摘要	Water infiltration is an important component of overland hydrology, closely related to the amount of water that penetrates into soil, overland flow, soil erosion, and chemical transport. The Green-Ampt infiltration equation is one of the most widely used infiltration equations in hydrological and erosion models. The piston assumption in the model simplify the soil moisture distribution and overestimated the values at the mean time. A new model for predicting the soil water content distribution along a horizontal soil column and a related algorithm for soil water infiltration rate estimation are presented. Two linear functions were used to replace the even distribution of soil water content in the vadose zone and the wetting front, as traditionally used in the Green-Ampt infiltration model. The new algorithm for soil water infiltration rate estimation was based on a new soil water content distribution model. Laboratory experiments were conducted with three soils (sandy loam, silt loam, and silty clay loam) to illustrate the infiltration estimations experimentally. The relative errors of the method calculated based on the water/mass balance principle were 2.05%, 4.75%, and 1.92% for sandy loam, silt loam, and silty clay loam soil, respectively. Changes in the relative errors over time were also analyzed. This new, highly precise method can be applied to infiltration and groundwater modeling studies, as well as irrigation and drainage management. (C) 2016 Elsevier B.V. All rights reserved.
学科主题	Soil Science
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000376705400004
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/19675]
专题	农业环境与可持续发展研究所_旱作节水研究室
作者单位	1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Minist Agr, Key Lab Dryland Agr, Zhongguancun South St 12, Beijing 100081, Peoples R China 2.China Agr Univ, Coll Water Conservancy & Civil Engn, Key Lab Modern Precis Agr Syst Integrat Res, Qinghuadonglu 17, Beijing 100083, Peoples R China 3.Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Zhonghua North St 268, Shijiazhuang 050061, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Mao, Lili,Li, Yuzhong,Hao, Weiping,et al. A new method to estimate soil water infiltration based on a modified Green-Ampt model[J]. SOIL & TILLAGE RESEARCH,2016,161:31-37.
APA	Mao, Lili,Li, Yuzhong,Hao, Weiping,Zhou, Xiaoni,Xu, Chunying,&Lei, Tingwu.(2016).A new method to estimate soil water infiltration based on a modified Green-Ampt model.SOIL & TILLAGE RESEARCH,161,31-37.
MLA	Mao, Lili,et al."A new method to estimate soil water infiltration based on a modified Green-Ampt model".SOIL & TILLAGE RESEARCH 161(2016):31-37.