基于分层多尺度分割的水土流失图斑落地方法研究  

Extraction method of soil erosion vector based on layered multiscale segmentation

作　　者：刁品文 赵敏 余榕 陈黎 李子涵 DIAO Pinwen;ZHAO Min;YU Rong;CHEN Li;LI Zihan(Pearl River Hydraulic Research Institute,Pearl River Water Resources Commission of the Ministry of Water Resources,Guangzhou 510611,China;Surveying and Mapping Institute of Lands and Resource Department of Guangdong Province,Guangzhou 510550,China)

机构地区：[1]珠江水利委员会珠江水利科学研究院,广东广州510611 [2]广东省国土资源测绘院,广东广州510550

出　　处：《人民长江》2025年第3期87-94,共8页Yangtze River

基　　金：国家自然科学基金项目(32371966);水利部重大科技项目(SKS-2022137)。

摘　　要：为推进水土流失动态监测成果应用,将水土流失栅格结果与水土流失治理工作要求结合,实现适宜治理水土流失图斑的精准识别定位,以桂林市灵川县为研究区,提出了一种基于分层多尺度分割的水土流失图斑落地方法。研究结果表明:分层多尺度分割方法在水土流失栅格结果和土地利用矢量间实现了较好的平衡,基于分层多尺度分割方法的水土流失图斑准确率达到了90%,具有准确、高效和便于应用等优势,落地图斑能够为后续水土流失治理工作提供支持。研究结果可为全国水土流失图斑落地工作提供方法借鉴,为漓江流域综合治理提质增效提供基础数据和决策参考。Through combining requirements of soil erosion control work with the grid results of soil erosion,the accurate identification,positioning,and cutting of soil erosion vector suitable for control could be achieved,which is helpful to promoting application of dynamic monitoring of soil and water erosion.We take Lingchuan County,Guilin City as the research area,propose a method of extracting soil erosion vector based on layered multiscale segmentation,and accurately identify soil erosion vectors in the research area.The results show that the layered multiscale segmentation method achieves a good balance between soil erosion grid results and land use vectors,the accuracy of soil erosion vector based on layered multiscale segmentation method reaches 90%,and has advantages such as accuracy,efficiency,and easy application compared to traditional methods.The extracted vectors can directly support the subsequent soil erosion control work.The research results can provide basic data and decision-making references for improving the quality and efficiency of comprehensive management of Lijiang River Watershed,and also provide methodological references for the implementation of extracting soil erosion vectors nationwide.

关 键 词：水土流失 图斑落地 分层多尺度分割 漓江流域 

分 类 号：S157[农业科学—土壤学]