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	Parameters of vG model for soil water retention curve
	Cong Zhentao ; Zhang Zhuoying ; Ni Guangheng ; Lei Zhidong
	2010-05-10 ; 2010-05-10
会议名称	EFFECTIVE UTILIZATION OF AGRICULTURAL SOIL & WATER RESOURCES AND PROTECTION OF ENVIRONMENT ; International Conference on Effective Utilization of Agricultural Soil and Water Resources and Protection of Environment/4th Annual Academic Conference of Chinese-Society-of-Agricultural-Soil-and-Water-Engineering ; Nanjing, PEOPLES R CHINA ; Web of Science
关键词	soil water retention curve vG model UNSODA Agricultural Engineering Soil Science Water Resources
中文摘要	The soil water retention curve is the foundation to numerically simulate the soil water movement, so it is of great significance to build models to describe the soil water retention curve and to estimate the parameters. In this paper, vG model parameters of the soil samples in Unsaturated Soil Hydraulic Property(UNSODA) are estimated with MATLAB, and the results indicate: (1) In order to exactly reflect the character of the soil water retention curved the experimental data should be enough to cover all the water content range with equall distribution; (2) Parameter a lies between 0 and 1. 0(1/cm) and mostly lies between 0 and 0. 1 (1/cm); parameter n mostly lies between 1. 0 and 2. 0 except for that of sand. (3) When the soil stickiness is bigger, the parameter a is bigger but the parameter 71 is smaller.
会议录出版者	HOHAI UNIV PRESS ; NANJING ; 1 XIKANG RD, NANJING, 210098, PEOPLES R CHINA
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/20121]
专题	清华大学
推荐引用方式 GB/T 7714	Cong Zhentao,Zhang Zhuoying,Ni Guangheng,et al. Parameters of vG model for soil water retention curve[C]. 见:EFFECTIVE UTILIZATION OF AGRICULTURAL SOIL & WATER RESOURCES AND PROTECTION OF ENVIRONMENT, International Conference on Effective Utilization of Agricultural Soil and Water Resources and Protection of Environment/4th Annual Academic Conference of Chinese-Society-of-Agricultural-Soil-and-Water-Engineering, Nanjing, PEOPLES R CHINA, Web of Science.

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