基于遥感技术的香格里拉地质灾害监测

MONITORING OF GEOLOGICAL HAZARDS IN SHANGRI-LA BASED ON REMOTE SENSING TECHNOLOGY

香格里拉位于青藏高原横断山区腹地,该区域频繁发生泥石流、滑坡和崩塌等多种地质灾害。为监测该市重点地区的地质灾害,采用Pléiades卫星数据,在迪庆经济开发区与虎跳峡镇进行了1∶1万比例的地质灾害遥感监测。同时,使用资源三号卫星数据对全市范围内的重点地区进行了1∶5万比例的遥感监测。1∶1万比例的遥感监测在迪庆经济开发区与虎跳峡镇共发现60余处地质灾害点,而1∶5万比例的监测则在更广泛的市域重点区域发现了558处地质灾害点。野外验证结果表明,无论是1∶1万还是1∶5万比例的遥感监测,准确率均达到100%。这一研究结果强调了遥感技术在监测地质灾害方面的有效性和准确性,表明该技术非常适合用于全面了解和预防香格里拉市的地质灾害,具有广泛的应用前景。

Shangri-La is located in the hinterland of the Hengduan Mountain region of the Tibetan Plateau,a region where a variety of geologic hazards,such as mudslides,landslides and avalanches,occur frequently.In order to monitor geologic hazards in key areas of the city,the study used Pléiades satellite data to conduct 1∶10000-scale remote sensing monitoring of geologic hazards in the Diqing Economic Development Zone and the town of Tiger Leaping Gorge.At the same time,a 1∶50000 scale remote sensing monitoring of key areas within the city was carried out using Resource 3 satellite data.The 1∶10000 scale remote sensing monitoring identified more than 60 geohazards in Diqing Economic Development Zone and Tiger Leaping Gorge Town,whereas the 1∶50000 scale monitoring identified 558 geohazards in a wider range of key areas in the city.The field validation results showed that both the 1∶10000 and 1∶50000 scale remote sensing monitoring achieved 100%accuracy.The results of this study emphasize the effectiveness and accuracy of remote sensing technology in monitoring geohazards,indicating that the technology is well suited for a comprehensive understanding and prevention of geohazards in Shangri-La city,with a wide range of applications.