Spatial pattern and heterogeneity of soil moisture along a transect in a small catchment on the Loess Plateau

doi:10.1016/j.jhydrol.2017.05.026

ISWC OpenIR > 水保所科研产出--SCI > 2017--SCI

	Spatial pattern and heterogeneity of soil moisture along a transect in a small catchment on the Loess Plateau
	Yang, Yang 1; Dou, Yanxing 2; Liu, Dong 2; An, Shaoshan 1,2; An, SS (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Rd Xinong 26, Yangling 712100, Shaanxi, Peoples R China.
文章类型	Article
	2017
发表期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
通讯作者邮箱	shan@ms.iswc.ac.cn
卷号	550 页码:466-477
摘要	Spatial pattern and heterogeneity of soil moisture is important for the hydrological process on the Loess Plateau. This study combined the classical and geospatial statistical techniques to examine the spatial pattern and heterogeneity of soil moisture along a transect scale (e.g. land use types and topographical attributes) on the Loess Plateau. The average values of soil moisture were on the order of farmland > orchard > grassland > abandoned land > shrubland > forestland. Vertical distribution characteristics of soil moisture (0-500 cm) were similar among land use types. Highly significant (p < 0.01) negative correlations were found between soil moisture and elevation (h) except for shrubland (p > 0.05), whereas no significant correlations were found between soil moisture and plan curvature (Kh), stream power index (SPI), compound topographic index (CTI) (p > 0.05), indicating that topographical attributes (mainly h) have a negative effect on the soil moisture spatial heterogeneity. Besides, soil moisture spatial heterogeneity decreased from forestland to grassland and farmland, accompanied by a decline from 15 to 1 alongside upper to lower slope position. This study highlights the importance of land use types and topographical attributes on the soil moisture spatial heterogeneity from a combined analysis of the structural equation model (SEM) and generalized additive models (GAMS), and the relative contribution of land use types to the soil moisture spatial heterogeneity was higher than that of topographical attributes, which provides insights for researches focusing on soil moisture varitions on the Loess Plateau. (C) 2017 Elsevier B.V. All rights reserved.
关键词	Spatial Heterogeneity Soil Moisture Transect Scale Catchment Loess Plateau
学科领域	Engineering ; Geology ; Water Resources
DOI	10.1016/j.jhydrol.2017.05.026
URL	查看原文
收录类别	SCI
出版地	AMSTERDAM
语种	英语
WOS记录号	WOS:000404816000037
出版者	ELSEVIER SCIENCE BV
项目资助者	National Natural Sciences Foundation of China [41671280]; Key Projects in the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period [2015BAC01B01]; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021403-C6] ; National Natural Sciences Foundation of China [41671280]; Key Projects in the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period [2015BAC01B01]; Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021403-C6]
引用统计
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/7967
专题	水保所科研产出--SCI_2017--SCI
通讯作者	An, SS (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Rd Xinong 26, Yangling 712100, Shaanxi, Peoples R China.
作者单位	1.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Peoples R China 2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Rd Xinong 26, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yang,Dou, Yanxing,Liu, Dong,et al. Spatial pattern and heterogeneity of soil moisture along a transect in a small catchment on the Loess Plateau[J]. JOURNAL OF HYDROLOGY,2017,550:466-477.
APA	Yang, Yang,Dou, Yanxing,Liu, Dong,An, Shaoshan,&An, SS .(2017).Spatial pattern and heterogeneity of soil moisture along a transect in a small catchment on the Loess Plateau.JOURNAL OF HYDROLOGY,550,466-477.
MLA	Yang, Yang,et al."Spatial pattern and heterogeneity of soil moisture along a transect in a small catchment on the Loess Plateau".JOURNAL OF HYDROLOGY 550(2017):466-477.