The interactive effects of elevation, precipitation and lithology on karst rainfall and runoff erosivity

doi:10.1016/j.catena.2021.105588

	The interactive effects of elevation, precipitation and lithology on karst rainfall and runoff erosivity
	Jiang, Yuan 1,2; Gao, Jiangbo 1; Yang, Lin 3; Wu, Shaohong 1,2; Dai, Erfu 4
刊名	CATENA
	2021-12-01
卷号	207 页码:11
关键词	Optimized erosivity model Spatial differentiation Dynamic changes Driving factors Geographical detector
ISSN号	0341-8162
DOI	10.1016/j.catena.2021.105588
通讯作者	Gao, Jiangbo(gaojiangbo@igsnrr.ac.cn)
英文摘要	Soil erosion, which is the prominent ecological and environmental problem in the karst regions of southwestern China, has seriously affected the regionecological conservation and economic development. Quantifying rainfall erosivity and runoff erosivity, can be a means to identify the dominant environmental factors involved in these mechanisms and provide a theoretical basis for mitigating soil and water loss. This aids determination of the measures required to control rocky desertification and promote the ecological restoration of karst areas. Accordingly, this study simulated the rainfall erosivity in the Sancha River Basin (SRB) between 1985 and 2014 using an adopted daily rainfall model according to the karst erosive rainfall standard. Based on the degree of rocky desertification in the karst areas, correction coefficients were applied to improve runoff erosivity calculation and estimate the runoff erosivity of the basin between 1993 and 2014. In addition, the dominant and interactive factors affecting rainfall/runoff erosivity of the diverse geomorphological types in the SRB were quantitatively identified using the geographical detector. Results showed that the rainfall erosivity between 1985 and 2014 averaged 6913.73 MJ.mm.ha(-1).h (-1), with an average runoff erosivity of 1121.37 m(4).km(-2).s(-1) between 1993 and 2014. Precipitation and elevation were found to be the dominant factors shaping the spatial distributions of rainfall/runoff erosivity in the SRB. Precipitation explained over 90% of the spatial distribution in rainfall erosivity, and the q value of precipitation for runoff erosivity had no direct relationship with time. Furthermore, the interactions of elevation and precipitation, elevation and lithology type had prominent effects on rainfall erosivity and runoff erosivity in the SRB, respectively. Among them, the compound effects of elevation and precipitation could explain more than 80% of rainfall erosivity. These findings should be essential for managing soil and water loss in the karst areas.
资助项目	National Natural Science Foundation of China[42071288] ; National Natural Science Foundation of China[41671098] ; National Key Research and Development Program of China[2018YFC1508900] ; National Key Research and Development Program of China[2018YFC1508801] ; Program for Kezhen Distinguished Talents in Institute of Geographic Sciences and Natural Resources Research[2020RC002]
WOS关键词	SOIL-EROSION ; TEMPORAL VARIATIONS ; RISK-ASSESSMENT ; CHINA ; BASIN ; SEDIMENT ; GEOMORPHOLOGY ; PATTERNS ; PLATEAU ; CLIMATE
WOS研究方向	Geology ; Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000703268900013
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Program for Kezhen Distinguished Talents in Institute of Geographic Sciences and Natural Resources Research
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165878]
专题	中国科学院地理科学与资源研究所
通讯作者	Gao, Jiangbo
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 3.Nanjing Univ, Sch Geog & Ocean Sci, Nanjing, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Lhasa Plateau Ecosyst Res Stn, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Yuan,Gao, Jiangbo,Yang, Lin,et al. The interactive effects of elevation, precipitation and lithology on karst rainfall and runoff erosivity[J]. CATENA,2021,207:11.
APA	Jiang, Yuan,Gao, Jiangbo,Yang, Lin,Wu, Shaohong,&Dai, Erfu.(2021).The interactive effects of elevation, precipitation and lithology on karst rainfall and runoff erosivity.CATENA,207,11.
MLA	Jiang, Yuan,et al."The interactive effects of elevation, precipitation and lithology on karst rainfall and runoff erosivity".CATENA 207(2021):11.