QQ客服 官方微博 反馈留言

	Depth persistence of the spatial pattern of soil-water storage along a small transect in the Loess Plateau of China
	Li X. Z.; Shao, M. A.; Jia, X. X.; Wei, X. R.; He, L.
	2015
关键词	Depth persistence Soil-water storage Spatial pattern Wavelet coherency The Loess Plateau empirical mode decomposition temporal stability time stability northwestern china hummocky landscape moisture profile wavelet analysis assimilation catchment layers
英文摘要	Knowledge of the spatial patterns of soil water storage (SWS) in soil profiles is important for understanding the dynamics of soil water between surface and subsurface soil layers in semiarid area. We investigated the depth persistence of the overall and scale-specific spatial patterns of SWS for different soil layers during different seasons. Soil water contents were measured using a neutron probe on 22 occasions in 2012 and 2013 along a 1340-m transect over several sub-watersheds in the Liudaogou catchment on the Loess Plateau of China. Similarities in the spatial patterns of SWS were analyzed by Spearman's rank correlations and wavelet coherency. A spatiotemporal analysis indicated that the temporal evolution of the SWS profiles differed between the growing and non-growing seasons and that landscape position and soil texture determined the amount of SWS at each sampling location. Spearman's rank correlations were significant between any two layers within different seasons, and the correlation coefficients decreased as the distance between layers increased. Clay content controlled the spatial pattern of SWS between layers at large scales. The SWS spatial pattern had a higher depth persistence during the non-growing season than during the growing season, and the soil layer had a larger effect than season on the similarity in SWS spatial patterns. These results can improve our understanding of the hydrological processes in soil profiles and can be of considerable value in the application of hydrological models and in water management. (C) 2015 Elsevier B.V. All rights reserved.
出处	Journal of Hydrology
卷	529
页	685-695
收录类别	SCI
语种	英语
ISSN号	0022-1694
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/38700]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Li X. Z.,Shao, M. A.,Jia, X. X.,et al. Depth persistence of the spatial pattern of soil-water storage along a small transect in the Loess Plateau of China. 2015.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。