A preliminary investigation of gully edge effect on the distribution pattern of soil moisture across a permanent gully

doi:10.1016/j.jhydrol.2020.125288

	A preliminary investigation of gully edge effect on the distribution pattern of soil moisture across a permanent gully
	Jia, Yu-Hua 2; Li, Tong-Chuan 1; Shao, Ming-An 3
刊名	JOURNAL OF HYDROLOGY
	2020-11-01
卷号	590 页码:9
关键词	Gully edge effect Permanent gully Slope-gully system Soil water content Spatial pattern Soil erosion
ISSN号	0022-1694
DOI	10.1016/j.jhydrol.2020.125288
通讯作者	Jia, Yu-Hua(jiayuhua@163.com)
英文摘要	Describing and mapping soil water content (SWC) distribution are required to understand and explain the hydrological phenomena at various spatial scales. Soil drought in the hilly and gully regions of Loess Plateau reduces agricultural production and plants biomass, which has attracted great attention but few studies associated it with the gullied terrain. To understand the SWC distribution pattern in the slope-gully system, we established a cross-section transect for SWC observation across a permanent gully and acquired 23 occasions of SWC data in the periods from October 2014 to September 2018. The standardized beta coefficient in stepwise multiple linear regression was employed to determine the strength of the effect of the selected variables (soil textural separates, soil depth, relative height, distance to the gully and saturated hydraulic conductivity) on SWS distribution. Spectral and cross-spectral analysis were performed on the time series of SWC to evaluate the cyclical behavior and the similarity for adjacent sites, respectively. The following results were obtained: First, the SWC distribution had a bilateral asymmetrical pattern across the gully, which constituted a specific and detailed content of spatial variability of SWC. Second, soil water storage in the slope-gully system was primarily affected by soil texture, meanwhile, the effect of distance to the gully was stronger than that of soil depth. Third, the SWC of the adjacent pair sites presented consistent periodic behavior. The cross-spectral analysis indicated a dissimilar pattern for soil layer of 0-60 cm and deep synchrony for the other depth layers. In conclusion, the gully edge effect aggravated the SWC status in the south bank and caused a bilateral asymmetrical pattern in the slope-gully system. These results improved our knowledge on the complicated distribution of SWC in the gullied region. Moreover, the results indicate that ignoring the nearby areas of a permanent gully in a catchment is inappropriate when investigating soil water resources.
资助项目	National Natural Science Foundation of China[41571221] ; National Natural Science Foundation of China[41807011]
WOS关键词	NORTHERN LOESS PLATEAU ; WATER STORAGE ; TEMPORAL STABILITY ; SPECTRAL-ANALYSIS ; SURFACE MOISTURE ; TRANSECT ; EROSION ; VARIABILITY ; HILLSLOPE ; REGION
WOS研究方向	Engineering ; Geology ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000599754500075
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/137829]
专题	中国科学院地理科学与资源研究所
通讯作者	Jia, Yu-Hua
作者单位	1.Northwest Agr & Forestry Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Shenyang Agr Univ, Coll Water Conservancy, Key Lab Soil Eros Control & Ecol Restorat Liaonin, Shenyang 110866, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Jia, Yu-Hua,Li, Tong-Chuan,Shao, Ming-An. A preliminary investigation of gully edge effect on the distribution pattern of soil moisture across a permanent gully[J]. JOURNAL OF HYDROLOGY,2020,590:9.
APA	Jia, Yu-Hua,Li, Tong-Chuan,&Shao, Ming-An.(2020).A preliminary investigation of gully edge effect on the distribution pattern of soil moisture across a permanent gully.JOURNAL OF HYDROLOGY,590,9.
MLA	Jia, Yu-Hua,et al."A preliminary investigation of gully edge effect on the distribution pattern of soil moisture across a permanent gully".JOURNAL OF HYDROLOGY 590(2020):9.