湖北农业科学2025，Vol.64Issue(9)：27-35,43,10.DOI:10.14088/j.cnki.issn0439-8114.2025.09.006
地貌敏感区土壤保持的长期演变及其气候时空响应机制
Long-term evolution of soil conservation and its climatic spatio-temporal response mechanism in geomorphologically sensitive areas:A case of Shanxi Province
摘要
Abstract
Taking Shanxi Province as the research area,based on multi-source remote sensing and climate data from 2001 to 2023,the RUSLE model was constructed,and the main controlling factors of soil conservation changes from both spatial and temporal dimen-sions were systematically identified by integrating Theil-Sen Median trend analysis method,random forest model,and pixel-by-pixel regression method.The results showed that the total soil conservation in Shanxi Province showed a significant upward trend from 2001 to 2023,with an average annual increase of 0.149 t/hm2.The high-value areas of changes in potential soil erosion and conservation were concentrated in regions with large topographic relief and significant ecological engineering intervention,showing an obvious geo-morphology-climate coupling effect.The results of driving factor identification indicated that soil moisture,wind speed,and potential evapotranspiration were the key control variables in the spatial dimension,and the maximum contribution to the random forest model was 20.0%,16.3%and 15.5%,respectively.In the temporal dimension,the drought index was the dominant factor,reflecting the long-term regulatory effect of water deficit on the interannual changes of soil conservation.关键词
土壤保持/气候变化/RUSLE模型/时空响应机制/地貌敏感区/山西省Key words
soil conservation/climate change/RUSLE model/spatio-temporal response mechanism/geomorphic sensitive areas/Shanxi Province分类
农业科技引用本文复制引用
陈晓文,荀佳常,刘昌永,张鹤缤,王晓娅..地貌敏感区土壤保持的长期演变及其气候时空响应机制[J].湖北农业科学,2025,64(9):27-35,43,10.基金项目
北京师范大学环境变化与自然灾害教育部重点实验室项目(2022-KF-13) （2022-KF-13）
