Spatio-temporal variability of multi-layer soil water at a hillslope scale in the critical zone of the Chinese Loess Plateau

doi:10.1002/hyp.13888

IEECAS OpenIR > 生态环境研究室

	Spatio-temporal variability of multi-layer soil water at a hillslope scale in the critical zone of the Chinese Loess Plateau
	He, Meina 1,2; Wang, Yunqiang 2,3,4,5; Wang, Li 1; Li, Ruijie 2,6
通讯作者	Wang, Yunqiang(wangyunq04@163.com) ; Wang, Li(wangli5208@nwsuaf.edu.cn)
	2020-09-11
发表期刊	HYDROLOGICAL PROCESSES
ISSN	0885-6087
页码	14
摘要	Understanding the spatio-temporal variability of soil water content (SWC) in the Critical Zone (CZ) is essential to balance plant-water benefits and to enhance the ability to monitor and predict drought. In current study, the spatial variability and temporal stability of multi-layer SWC to a depth of 500 cm (35 soil layers) at 27 sampling sites were evaluated at a hillslope scale. A total of 64 SWC measurements were obtained from 28 March, 2017 to 23 December, 2018. We hypothesized the existence of a "special point" that is temporally stable both in horizontal direction (which means different layers) and in vertical direction (which means different profiles). We found a clear seasonal dynamic pattern of mean SWC for all sites in the 0-500 cm profile, with SWC varying from 4.0 to 24.8%. In the horizontal layer, both the 130-cm and 140-cm layers contained a maximum number of temporal stability sites (N= 4) which all located at H-11, H-13, H(14)and H-26. In the vertical profile, H(19)was the most stable site, followed by H(10)and H-26, with 15, 10 and 6 stable layers, respectively. The decreasing order of SWC temporal stability was 200-500 cm, 0-500 cm and 0-200 cm, which means the temporal stability of SWC in 0-500 cm profile was more dependent on the 0-200 cm sub-profile. At a three-dimension scale, the most temporal stability layer and site was 180-cm of H(1)and H(21)of 220-cm, which confirmed our hypothesis. This study provides an accurate description of SWC spatio-temporal variation at the hillslope scale, which is helpful for addressing eco-hydrological models and water management issues in the Earth's CZs.
关键词	critical zone monoculture forest soil water content spatial variation temporal stability three-dimensional distribution
DOI	10.1002/hyp.13888
关键词[WOS]	TEMPORAL STABILITY ; LOCAL SCALE ; MOISTURE ; DYNAMICS ; STORAGE ; ECOSYSTEM ; PATTERNS ; SHALLOW ; DRIVEN ; LAYERS
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[41722106] ; National Natural Science Foundation of China[41971045] ; National Key Research and Development Program of China[2019YFA0607303]
WOS研究方向	Water Resources
项目资助者	National Natural Science Foundation of China ; National Key Research and Development Program of China
WOS类目	Water Resources
WOS记录号	WOS:000567916800001
出版者	WILEY
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/15287
专题	生态环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Wang, Yunqiang; Wang, Li
作者单位	1.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian, Peoples R China 4.Grad Univ Chinese Acad Sci, Beijing, Peoples R China 5.Xi An Jiao Tong Univ, Dept Earth & Environm Sci, Xian, Peoples R China 6.Xian Inst Innovat Earth Environm Res, Xian, Peoples R China
推荐引用方式 GB/T 7714	He, Meina,Wang, Yunqiang,Wang, Li,et al. Spatio-temporal variability of multi-layer soil water at a hillslope scale in the critical zone of the Chinese Loess Plateau[J]. HYDROLOGICAL PROCESSES,2020:14.
APA	He, Meina,Wang, Yunqiang,Wang, Li,&Li, Ruijie.(2020).Spatio-temporal variability of multi-layer soil water at a hillslope scale in the critical zone of the Chinese Loess Plateau.HYDROLOGICAL PROCESSES,14.
MLA	He, Meina,et al."Spatio-temporal variability of multi-layer soil water at a hillslope scale in the critical zone of the Chinese Loess Plateau".HYDROLOGICAL PROCESSES (2020):14.