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[1]YAO Kun,ZHOU Bing,HE Lei,et al.Changes in Soil Erosion in the Upper Reaches of the Minjiang River Based on Geo-Detector[J].Research of Soil and Water Conservation,2022,29(02):85-91.

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Changes in Soil Erosion in the Upper Reaches of the Minjiang River Based on Geo-Detector

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 02 Page number: 85-91 Column: Public date: 2022-03-20

Title:: Changes in Soil Erosion in the Upper Reaches of the Minjiang River Based on Geo-Detector

Author(s):: YAO Kun¹, ZHOU Bing², HE Lei^3,4, LIU Bin^3,4, LUO Han^3,4, LIU Dunlong^3,4, LI Yuxia⁵; (1.College of Resource and Environment,Xichang University,Xichang,Sichuan615000,China; 2.Climate Service Room,National Climate center,Beijing100081,China; 3.School of Software Engineering, Chengdu University of Information Technology,Chengdu610225,China; 4.Sichuan Province Engineering Technology Research Center of Support Software of Informatization Application,Chengdu610225,China; 5.School of Automation Engineering, University of Electronic Science and Technology of China,Chengdu611731,China)

Keywords:: soil erosion model(RUSLE); geographic detector; driving force

CLC:: S157.1

DOI:: -

Abstract:: To grasp the dynamic changes and driving forces of soil erosion in the upper reaches of the Minjiang River, based on the revised soil erosion model(RUSLE), the quantitative evaluation of soil erosion in this area from 2000 to 2018 was realized. The soil erosion was divided into 6 grades according to the national water erosion grading standard. The slope change model was used to complete the analysis of its dynamic change pattern. The geo-detector was used to realize the exploration of its driving force of change. The results show that: mild and light erosion occupied more than 70% of the total area; in the past 20 years, soil erosion in the whole region had been effectively curbed as a whole, and the overall development trend was relatively good; vegetation coverage, precipitation and elevation were the main factors driving the formation and change of the spatial distribution pattern of soil erosion intensity, especially the driving effect of vegetation degree was the most obvious; when there was an interaction between the factors, the synergy effect was more obvious than the driving effect of the single factor. There are significant differences in the distribution patterns of soil erosion intensities in the upper reaches of the Minjiang River, and the overall erosion has been effectively controlled. Vegetation coverage is the main factor driving the change in the spatial distribution pattern of soil erosion intensity in this area.

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Last Update: 2022-04-20