摘要
暴雨引起的山体滑坡等自然灾害对人民生命财产安全造成损失,山体滑坡可以利用遥感手段,分析植被指数的变化进行遥感监测和分析。本研究选用暴雨前后的Sentinel2影像,通过计算多种指数,对比分析各指数灾害前后变化响应,通过设置各个指数阈值获取暴雨前后的植被信息变化,进而分析得到山体滑坡灾害的影响范围。研究结果表明:通过对研究区NDVI、NDWI、LSWI三种指数的计算以及变化分析,得到了各植被指数变化的特征;设定各个指数阈值条件与交集计算,获取了巩义市米河镇暴雨后山地滑坡范围,与实际受灾情况高度吻合。
Natural disasters by rainstorm cause losses to the safety of people’s lives and property.Landslides can be monitored and analyzed with the aid of remote sensing by analyzing the changes of vegetation index.In this study,Sentinel2 images before and after the rainstorm were selected.By calculating multiple indexes,the change responses of each index before and after the disaster was compared and analyzed.The vegetation information changes before and after the rainstorm were obtained by setting the threshold values of each index,and then the impact range of landslide disasters was analyzed.The results showed that the characteristics of vegetation index changes can be obtained by calculating and analyzing NDVI,NDWI and LSWI in the area under investigation.The range of mountain landslide after rainstorm in Mihe Town of Gongyi City was obtained by setting the threshold conditions of each index and intersection calculation,demonstrating a high consistence with the actual disaster situation.
作者
柳广春
邢文战
何欢
张峻铭
马全才
王晗彤
张琪
LIU Guang-chun;XING Wen-zhan;HE Huan;ZHANG Jun-ming;MA Quan-cai;WANG Han-tong;ZHANG Qi(School of Resources and Civil Engineering,Liaoning Institute of Science and Technology,Benxi Liaoning 117004,China)
出处
《辽宁科技学院学报》
2023年第1期6-9,共4页
Journal of Liaoning Institute of Science and Technology
基金
辽宁省教育厅服务地方项目“丹东市地质灾害敏感点监测预警及灾变机理研究”(LJKFZ20220282)。
