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Soil erosion evolution and spatial correlation analysis in a typical karst geomorphology using RUSLE with GIS
Cheng Zeng;  Shijie Wang;  Xiaoyong Bai;  Yangbing Li;  Yichao Tian;  Yue Li;  Luhua Wu;  Guangjie Luo
2017
Source PublicationSolid Earth
Volume8Issue:4Pages:721-736
Abstract

Although some scholars have studied soil erosion in karst landforms, analyses of the spatial and temporal evolution of soil erosion and correlation analyses with spatial elements have been insufficient. The lack of research has led to an inaccurate assessment of environmental effects, especially in the mountainous area of Wuling in China. Soil erosion and rocky desertification in this area influence the survival and sustainability of a population of 0.22 billion people. This paper analyzes the spatiotemporal evolution of soil erosion and explores its relationship with rocky desertification using GIS technology and the revised universal soil loss equation (RUSLE). Furthermore, this paper analyzes the relationship between soil erosion and major natural elements in southern China. The results are as follows: (1) from 2000 to 2013, the proportion of the area experiencing micro-erosion and mild erosion was at increasing risk in contrast to areas where moderate and high erosion are decreasing. The area changes in this time sequence reflect moderate to high levels of erosion tending to convert into micro-erosion and mild erosion. (2) The soil erosion area on the slope, at 15-35 degrees, accounted for 60.59% of the total erosion area, and the corresponding soil erosion accounted for 40.44 %. (3) The annual erosion rate in the karst region decreased much faster than in the non-karst region. Soil erosion in all of the rock outcrop areas indicates an improving trend, and dynamic changes in soil erosion significantly differ among the various lithological distribution belts. (4) The soil erosion rate decreased in the rocky desertification regions, to below moderate levels, but increased in the severe rocky desertification areas. The temporal and spatial variations in soil erosion gradually decreased in the study area. Differences in the spatial distribution between lithology and rocky desertification induced extensive soil loss. As rocky desertification became worse, the erosion modulus decreased and the decreasing rate of annual erosion slowed.

Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/8087
Collection环境地球化学国家重点实验室
Affiliation1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 99 Lincheng West Road, Guiyang 550081, Guizhou Province, PR China
2.School of Geographyical and Environmental Sciences, Guizhou Normal University, Guiyang 550001, China
3.Puding Karst Ecosystem Observation and Research Station, Chinese Academy of Sciences, Puding 562100, Guizhou Province, PR China
4.Key Laboratory of State Forestry Administration on Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
5.Institute of Agricultural Ecology and Rural Development, Guizhou Normal College, Guiyang 550018, China
Recommended Citation
GB/T 7714
Cheng Zeng;Shijie Wang;Xiaoyong Bai;Yangbing Li;Yichao Tian;Yue Li;Luhua Wu;Guangjie Luo. Soil erosion evolution and spatial correlation analysis in a typical karst geomorphology using RUSLE with GIS[J]. Solid Earth,2017,8(4):721-736.
APA Cheng Zeng;Shijie Wang;Xiaoyong Bai;Yangbing Li;Yichao Tian;Yue Li;Luhua Wu;Guangjie Luo.(2017).Soil erosion evolution and spatial correlation analysis in a typical karst geomorphology using RUSLE with GIS.Solid Earth,8(4),721-736.
MLA Cheng Zeng;Shijie Wang;Xiaoyong Bai;Yangbing Li;Yichao Tian;Yue Li;Luhua Wu;Guangjie Luo."Soil erosion evolution and spatial correlation analysis in a typical karst geomorphology using RUSLE with GIS".Solid Earth 8.4(2017):721-736.
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