Temporal stability of soil moisture in an oasis of northwestern China

doi:10.1002/hyp.11200

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	Temporal stability of soil moisture in an oasis of northwestern China
	Shao, Mingan 1,3; Shao, MA (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China.; Zhang, Shuaipu 1,2
刊名	HYDROLOGICAL PROCESSES
	2017
卷号	31 期号:15 页码:2725-2736
关键词	Geostatistics Gray Relational Grade Oasis Soil Moisture Spatial Pattern Temporal Stability
ISSN号	0885-6087
DOI	10.1002/hyp.11200
文献子类	Article
英文摘要	Temporal stability of soil moisture has been widely used in hydrological monitoring since it emerged. However, the spatial analysis of temporal stability at the landscape scale is often limited because of insufficient sampling numbers. This work made an effort to investigate the spatial variations of temporal stability of soil moisture in an oasis landscape. The specific objectives of the study were to explore the spatial patterns of temporal stability and to determine the controlling factors of temporal stability in the desert oasis. A time series of soil moisture measurements were gathered on 23 occasions at 118 locations over 3years in a rectangular transect of approximately 100km(2). The nonparametric Spearman's rank correlation coefficient, standard deviation of relative difference (SDRD), and mean absolute bias error (MABE) were used to quantify the temporal stability of soil moisture. Results showed that the temporal stability of soil moisture was depth dependent and season dependent. The spatial pattern of soil moisture in a deep soil layer and between two same seasons generally had a high temporal stability. SDRD and MABE were spatially autocorrelated and exhibited strong spatial structures in the geographic space. The concept of temporal stability can be extended to describe the time-stable areas of soil moisture with geostatistics. There were great differences between SDRD and MABE in describing the temporal stability of soil moisture and in identifying the controlling factors of temporal stability. In this case, MABE was a better alternative to estimate the areal mean soil moisture using representative locations than SDRD. Land use type, soil moisture condition, and soil particle composition were the dominant controls of temporal stability in the oasis. These insights could help to better understand the essence of temporal stability of soil moisture in arid regions.
学科主题	Water Resources
URL标识	查看原文
出版地	HOBOKEN
语种	英语
出版者	WILEY
WOS记录号	WOS:000405522600005
资助机构	National Natural Science Foundation of China [91025018] ; National Natural Science Foundation of China [91025018] ; National Natural Science Foundation of China [91025018] ; National Natural Science Foundation of China [91025018]
内容类型	期刊论文
源URL	[http://ir.iswc.ac.cn/handle/361005/7959]
专题	水保所科研产出--SCI_2017--SCI
通讯作者	Shao, MA (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China.
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China 2.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Shao, Mingan,Shao, MA ,Zhang, Shuaipu. Temporal stability of soil moisture in an oasis of northwestern China[J]. HYDROLOGICAL PROCESSES,2017,31(15):2725-2736.
APA	Shao, Mingan,Shao, MA ,&Zhang, Shuaipu.(2017).Temporal stability of soil moisture in an oasis of northwestern China.HYDROLOGICAL PROCESSES,31(15),2725-2736.
MLA	Shao, Mingan,et al."Temporal stability of soil moisture in an oasis of northwestern China".HYDROLOGICAL PROCESSES 31.15(2017):2725-2736.