干旱区生态环境知识资源中心(Arid): Temporal analysis on quantitative attribution of karst soil erosion: A case study of a peak-cluster depression basin in Southwest China

Arid

DOI	10.1016/j.catena.2018.08.035
	Temporal analysis on quantitative attribution of karst soil erosion: A case study of a peak-cluster depression basin in Southwest China
	Gao, Jiangbo 1; Wang, Huan 1,2
通讯作者	Gao, Jiangbo
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2019
卷号	172 页码:369-377
英文摘要	In karst areas, soil erosion is a significant problem, seriously impeding sustainable socioeconomic development. A thorough understanding and quantitative identification of the influencing factors are essential for soil erosion protection and rocky desertification management. This study identifies the dominant factors (and interactions) influencing soil erosion and its spatiotemporal variability in a karst basin, the Sancha River Basin, China. The geographical detector method was used to conduct the quantitative attribution analysis, based on the modified universal soil loss equation model for karst environments. The results revealed that karst soil erosion exhibited a notable decreasing trend over the past 36 years (p < 0.01), decreasing from 16.70 t ha(-1) a(-1) in 1980 to 12.22 t ha(-1) a(-1) in 2015. The geographical detector results indicated significant differences in the strength of the association between influencing factors (or factor combinations) and karst soil erosion. Land use type was the dominant factor, followed by slope; a combination of land use type and slope was the dominant interaction factor, explaining at least 74% of the karst soil erosion distribution. Land use change dominated karst soil erosion dynamics in the 1980s and 1990s, and rainfall variability dominated in the 2000s. In addition, karst soil erosion showed high spatial heterogeneity, and the strength of the association differed substantially among diverse geomorphological types due to differences in the inner characteristics of each. These findings suggest that the characteristics of different geomorphological types should be considered for effective management and prevention of soil erosion at a regional level, and that steep croplands, especially with slopes higher than 15, should be prohibited in karst areas. The methodology and framework can be used to better understand the relationships between soil erosion and its influencing factors in karst areas.
英文关键词	Karst soil erosion Quantitative attribution Modified RUSLE Geographical detector Temporal dynamics China
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000449136800035
WOS关键词	LAND-USE ; ROCKY DESERTIFICATION ; WATER EROSION ; LOSS EQUATION ; RUSLE ; GIS ; RUNOFF ; MODEL ; GEOMORPHOLOGY ; PRECIPITATION
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214802
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
推荐引用方式 GB/T 7714	Gao, Jiangbo,Wang, Huan. Temporal analysis on quantitative attribution of karst soil erosion: A case study of a peak-cluster depression basin in Southwest China[J]. 中国科学院地理科学与资源研究所,2019,172:369-377.
APA	Gao, Jiangbo,&Wang, Huan.(2019).Temporal analysis on quantitative attribution of karst soil erosion: A case study of a peak-cluster depression basin in Southwest China.CATENA,172,369-377.
MLA	Gao, Jiangbo,et al."Temporal analysis on quantitative attribution of karst soil erosion: A case study of a peak-cluster depression basin in Southwest China".CATENA 172(2019):369-377.