Evaluation of soil erosion vulnerability in Hubei Province of China using RUSLE model and combination weighting method  

作　　者：YANG Yanpan TIAN Pei JIA Tinghui WANG Fei YANG Yang HUANG Jianwu 

机构地区：[1]Key Laboratory for Geographical Process Analysis&Simulation of Hubei Province,Central China Normal University,Wuhan 430079,China [2]College of Urban and Environmental Sciences,Central China Normal University,Wuhan 430079,China [3]Department of Civil and Environmental Engineering,University of Alberta,Edmonton,AB,T6G 1H9,Canada

出　　处：《Journal of Mountain Science》2024年第10期3318-3336,共19页山地科学学报（英文）

基　　金：supported by the National Natural Science Foundation of China(42377354);the Natural Science Foundation of Hubei province(2024AFB951);the Chunhui Plan Cooperation Research Project of the Chinese Ministry of Education(202200199).

摘　　要：Soil erosion has been recognized as a critical environmental issue worldwide.While previous studies have primarily focused on watershed-scale soil erosion vulnerability from a natural factor perspective,there is a notable gap in understanding the intricate interplay between natural and socio-economic factors,especially in the context of spatial heterogeneity and nonlinear impacts of human-land interactions.To address this,our study evaluates the soil erosion vulnerability at a provincial scale,taking Hubei Province as a case study to explore the combined effects of natural and socio-economic factors.We developed an evaluation index system based on 15 indicators of soil erosion vulnerability:exposure,sensitivity,and adaptability.In addition,the combination weighting method was applied to determine index weights,and the spatial interaction was analyzed using spatial autocorrelation,geographical temporally weighted regression and geographical detector.The results showed an overall decreasing soil erosion intensity in Hubei Province during 2000 and 2020.The soil erosion vulnerability increased before 2000 and then.The areas with high soil erosion vulnerability were mainly confined in the central and southern regions of Hubei Province(Xiantao,Tianmen,Qianjiang and Ezhou)with obvious spatial aggregation that intensified over time.Natural factors(habitat quality index)had negative impacts on soil erosion vulnerability,whereas socio-economic factors(population density)showed substantial spatial variability in their influences.There was a positive correlation between soil erosion vulnerability and erosion intensity,with the correlation coefficients ranging from-0.41 and 0.93.The increase of slope was found to enhance the positive correlation between soil erosion vulnerability and intensity.

关 键 词：Soil erosion vulnerability RUSLE model Combination weighting method Driving factors Spatial heterogeneity 

分 类 号：S157[农业科学—土壤学]