干旱区生态环境知识资源中心(Arid): Spatial variability of the parameters of soil-water characteristic curves in gravel-mulched fields

Arid

DOI	10.2166/ws.2019.153
	Spatial variability of the parameters of soil-water characteristic curves in gravel-mulched fields
	Zhao, Wenju 1; Cao, Taohong 1; Li, Zongli 2; Su, Yu 1; Bao, Zhiwei 1
通讯作者	Zhao, Wenju
来源期刊	WATER SUPPLY
ISSN	1606-9749
EISSN	1607-0798
出版年	2020
卷号	20 期号:1 页码:231-239
英文摘要	Knowledge of the soil-water characteristic curve (SWCC) and its spatial variability is essential for many agricultural, environmental, and engineering applications. We analyzed the spatial variability of the parameters of SWCC in gravel-mulched fields using classical statistics and geostatistical methods. Soil samples were collected from the layer in 64 evenly distributed 1 x 1 m quadrats 4 m apart, center to center. SWCC in the gravel-mulched fields could be fitted well by both the van Genuchten and Brooks-Corey models, but the fit was better with the van Genuchten model. The type of fitting three parameters was tested. The model parameters theta(s) and n of each type of soil were weakly variable, and alpha was moderately variable. The results indicate that the gravel-mulched field has better water retention, and the water retention effect of the new gravel-mulched fields is most obvious. The spatial variation of the parameters in SWCC can therefore be used to infer soil hydraulic properties, which is important for simplifying the calculation of SWCC and quantitatively determining the retention of soil water and for managing the capacity of soil to retain water in gravel-mulched fields in arid regions.
英文关键词	gravel-mulched fields model parameters soil-water characteristic curve spatial variability
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000518596800022
WOS关键词	HYDRAULIC CONDUCTIVITY ; LOESS ; MODEL
WOS类目	Engineering, Environmental ; Environmental Sciences ; Water Resources
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315745
作者单位	1.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Peoples R China; 2.Minist Water Resources, Gen Inst Water Resources & Hydropower Planning &, Beijing 100120, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Wenju,Cao, Taohong,Li, Zongli,et al. Spatial variability of the parameters of soil-water characteristic curves in gravel-mulched fields[J],2020,20(1):231-239.
APA	Zhao, Wenju,Cao, Taohong,Li, Zongli,Su, Yu,&Bao, Zhiwei.(2020).Spatial variability of the parameters of soil-water characteristic curves in gravel-mulched fields.WATER SUPPLY,20(1),231-239.
MLA	Zhao, Wenju,et al."Spatial variability of the parameters of soil-water characteristic curves in gravel-mulched fields".WATER SUPPLY 20.1(2020):231-239.