Spatiotemporal variability of soil-water characteristic curve model parameters of Lanzhou collapsible loess

doi:10.2166/ws.2021.316

	Spatiotemporal variability of soil-water characteristic curve model parameters of Lanzhou collapsible loess
	Zhao, Wenju1 ; Liu, Yuhang 1; Hu, Jiazhen 1; Li, Zongli 2
	2022-02
发表期刊	WATER SUPPLY
ISSN	1606-9749
卷号	22 期号:2 页码:1770-1780
摘要	The spatiotemporal variation of the model parameters of the soil-water characteristic curve (SWCC) reflect the soil water holding capacity and soil pore distribution state. It is an integral part of interdisciplinary disciplines such as soil hydrodynamics and ecohydrology. The authors selected the optimal SWCC model for the Lanzhou collapsible loess, used classical statistics and geostatistics methods studied the spatiotemporal variability of the SWCC model parameters, and used the comprehensive comparison of the mean relative differences (MRD), standard deviations (SDRD) and an index of temporal stability (ITS) determined the representativeness measuring point. The results showed that the SWCC parameters alpha was medium variability in the 0-30 cm soil layer, n and theta(s) were of low variability, the spatial distribution of the parameters of different soil layers was consistent. Migration direction prediction of theta(s) was very similar in each layer, alpha, n and theta(s) were all strongly significantly correlated positively. Moreover, the determination coefficient of representative measuring point 16 had the highest prediction accuracy for the measured values of SWCC. The results of this paper can be used as a simple method to predict SWCC and provide theoretical guidance for soil water management and soil collapse erosion monitoring in collapsible loess area.
关键词	collapsible loess prediction soil-water characteristic curve spatial variability temporal stability
DOI	10.2166/ws.2021.316
收录类别	EI ; SCOPUS ; SCIE
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
WOS类目	Engineering, Environmental ; Environmental Sciences ; Water Resources
WOS记录号	WOS:000697739800001
出版者	IWA PUBLISHING
EI入藏号	20221011746654
EI主题词	Forecasting
EI分类号	483 Soil Mechanics and Foundations ; 483.1 Soils and Soil Mechanics
来源库	WOS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/148920
专题	能源与动力工程学院
通讯作者	Zhao, Wenju
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
第一作者单位	能源与动力工程学院
通讯作者单位	能源与动力工程学院
第一作者的第一单位	能源与动力工程学院
推荐引用方式 GB/T 7714	Zhao, Wenju,Liu, Yuhang,Hu, Jiazhen,et al. Spatiotemporal variability of soil-water characteristic curve model parameters of Lanzhou collapsible loess[J]. WATER SUPPLY,2022,22(2):1770-1780.
APA	Zhao, Wenju,Liu, Yuhang,Hu, Jiazhen,&Li, Zongli.(2022).Spatiotemporal variability of soil-water characteristic curve model parameters of Lanzhou collapsible loess.WATER SUPPLY,22(2),1770-1780.
MLA	Zhao, Wenju,et al."Spatiotemporal variability of soil-water characteristic curve model parameters of Lanzhou collapsible loess".WATER SUPPLY 22.2(2022):1770-1780.

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