Estimating spatial mean soil water contents of sloping jujube orchards using temporal stability

ISWC OpenIR > 水保所知识产出(1956---)

	Estimating spatial mean soil water contents of sloping jujube orchards using temporal stability
	Gao Xiaodong; Wu Pute; Zhao Xining; Wu, PT
	2011
发表期刊	AGRICULTURAL WATER MANAGEMENT
卷号	102 期号:1 页码:66-73
摘要	Estimating spatial mean soil water contents from point-scale measurements is important to improve soil water management in sloping land of semiarid areas. Temporal stability analysis, as a statistical technique to estimate soil water content, is an effective tool in terms of facilitating the upscaling estimation of mean values. The objective of this study was to examine temporal stability of soil water profiles (0-20, 20-40, 40-60 and 0-60 cm) in sloping jujube (Zizyphus jujuba) orchards and to estimate field mean root-zone soil water based on temporal stability analysis in the Yuanzegou catchment of the Chinese Loess Plateau, using soil water observations under both dry and wet soil conditions. The results showed that different time-stable locations were identified for different depths and the temporal stability of soil water content in 20-40 cm was significantly (P < 0.05) weaker than that in other depths. Moreover, these time-stable locations had relatively high clay contents, relatively mild slopes and relatively planar surfaces compared to the corresponding field means. Statistical analysis revealed that the temporal stability of root zone soil water (0-60 cm) was higher in either dry or wet season than that including both, and soil water exhibited very low temporal stability during the transition period from dry to wet. Based on the temporal stability analysis, field mean soil water contents were estimated reasonably (R(2) from 0.9560 to 0.9873) from the point measurements of these time-stable locations. Since the terrains in this study are typical in the hilly regions of the Loess Plateau, the results presented here should improve soil water management in sloping orchards in the Loess Plateau. (C) 2011 Elsevier B.V. All rights reserved.
关键词	Soil Moisture Variability Temporal Persistence Upscaling Water Management
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/4659
专题	水保所知识产出(1956---)
通讯作者	Wu, PT
推荐引用方式 GB/T 7714	Gao Xiaodong,Wu Pute,Zhao Xining,et al. Estimating spatial mean soil water contents of sloping jujube orchards using temporal stability[J]. AGRICULTURAL WATER MANAGEMENT,2011,102(1):66-73.
APA	Gao Xiaodong,Wu Pute,Zhao Xining,&Wu, PT.(2011).Estimating spatial mean soil water contents of sloping jujube orchards using temporal stability.AGRICULTURAL WATER MANAGEMENT,102(1),66-73.
MLA	Gao Xiaodong,et al."Estimating spatial mean soil water contents of sloping jujube orchards using temporal stability".AGRICULTURAL WATER MANAGEMENT 102.1(2011):66-73.

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