基于USLE和MGWR模型的洞庭湖区水土流失评估及其影响因素  

Soil and Water Loss Assessment and Its Influencing Factors in Dongting Lake Area Based on USLE and MGWR Models

作　　者：陈创 聂平静 郭军 向莉 黄凤寸 曾剑 陈凯 CHEN Chuang;NIE Pingjing;GUO Jun;XIANG Li;HUANG Fengcun;ZENG Jian;CHEN Kai(Changsha General Survey of Natural Resources Center,Changsha 410600;China University of Geosciences(Beijing),Beijing 100083)

机构地区：[1]中国地质调查局长沙自然资源综合调查中心,长沙410600 [2]中国地质大学(北京),北京100083

出　　处：《四川地质学报》2025年第1期147-153,188,共8页Acta Geologica Sichuan

基　　金：中国地质调查局项目(DD20230478);湖南省重点研发计划项目(2023SK2066)。

摘　　要：针对洞庭湖区水土流失问题,该文采用USLE和MGWR模型对2022年洞庭湖区水土流失进行了全面评估并探究其驱动因素。首先,利用通用水土流失方程(Universal Soil Loss Equation, USLE)分析了水土侵蚀的空间分布情况,其次,采用多尺度地理加权回归模型(multi-scale geographically weighted regression, MGWR)对水土侵蚀的影响因素进行了深入分析,量化了不同因素对水土侵蚀的贡献,并考虑了地理位置因素对这些影响因素的空间变化影响。结果表明:洞庭湖区的水土侵蚀以微度、轻度侵蚀为主;影响水土侵蚀最大因素为坡度,且洞庭湖区的水土侵蚀受多种因素影响,并提出了针对不同地区的水土保护措施建议。研究结果可为洞庭湖区水土资源的合理利用和保护提供了重要参考,对区域可持续发展具有重要意义。Aiming at the problem of soil and water loss in Dongting Lake area,this paper uses USLE and MGWR models to conduct a comprehensive assessment of soil and water loss in Dongting Lake Area in 2022 and explore its driving factors.Firstly,the Universal Soil Loss Equation(USLE)was used to analyze the spatial distribution of soil and water erosion.Secondly,In this paper,multi-scale geographically weighted regression(MGWR)model was used to deeply analyze the influential factors of soil and water erosion,and quantify the contribution of different factors to soil and water erosion.The spatial variation of these factors is also considered.The results show that the soil and water erosion in Dongting Lake area is mainly slight and mild erosion.The slope is the most important factor affecting soil and water erosion,and the soil and water erosion in Dongting Lake District is affected by many factors.The research results can provide an important reference for the rational utilization and protection of water and soil resources in Dongting Lake area,and have important significance for regional sustainable development.

关 键 词：USLE 洞庭湖区 MGWR 驱动因素 

分 类 号：K909[历史地理—人文地理学]