青海省湟水流域地质灾害动态变化遥感监测  

Remote sensing monitoring of the dynamic changes in geologic hazards in the Huangshui River basin of Qinghai Province

作　　者：辛荣芳 李宗仁[1,2,3,4] 张焜 张兴 黄丽[1,2,3,4] 刘宝山 XIN Rongfang;LI Zongren;ZHANG Kun;ZHANG Xing;HUANG Li;LIU Baoshan(Institute of Geological Survey of Qinghai Province,Xining 810012,China;Qinghai Remote Sensing Big Data Engineering Technology Research Center,Xining 810012,China;Qinghai Satellite Application Technology Center for Natural Resources,Xining 810012,China;The Northern Qinghai-Tibet Plateau Geological Processes and Mineral Resources Laboratory,Xining 810012,China)

机构地区：[1]青海省地质调查院,西宁810012 [2]青海省遥感大数据工程技术研究中心,西宁810012 [3]自然资源青海卫星应用技术中心,西宁810012 [4]青藏高原北部地质过程与矿产资源重点实验室,西宁810012

出　　处：《自然资源遥感》2022年第4期254-261,共8页Remote Sensing for Natural Resources

基　　金：青海省科技成果转化专项项目“青海典型区地质灾害一体化监测关键技术研究与示范应用”(编号:2019-SF-130)资助。

摘　　要：为了解近年来青海省湟水流域地质灾害频发原因,以GF-1和GF-2卫星遥感数据为主要信息源,在多源、多时相、多期次的遥感影像对比监测的基础上,基于地学知识的支撑,通过研究区已有地质灾害研究资料整理分析甄别、室内遥感影像解译和野外实地调查验证等方法建立了详细、可靠的地质灾害空间分布数据库,通过地理信息系统(geographic information system,GIS)空间分析模型,结合地质灾害参数指标进行统计分析,探讨了地质灾害发生、发展与地质环境、自然因素和人类活动的关系。结果表明:2017年区内共发现崩塌和滑坡等地质灾害点3188处,2009年以来发生变化的地质灾害点233处。在地质灾害诸多形成条件中,地质环境条件变化缓慢、人类工程活动和降雨则是最活跃的因素,可见在二者的双重作用下诱发了地质灾害。This study investigated the causes of the frequent occurrence of geologic hazards in the Huangshui River basin of Qinghai Province in recent years mainly using the GF-1 and GF-2 satellite remote sensing data.Based on the comparative monitoring of multi-source,multi-temporal,and multi-period remote sensing images and the support of geoscience knowledge,this study built a detailed and reliable spatial distribution database of geological hazards through the sorting,analysis,and screening of existent geologic hazard data of the study area,the laboratory interpretation of remote sensing images,and field investigation and verification.Then,it conducted a statistical analysis using the spatial analysis module of GIS and the parameters of geologic hazards.Finally,this study explored the relationships between the occurrence of geologic hazards and geological environment,natural factors,and human activities.The results are as follows.In 2017,3188 sites of geologic hazards such as collapse and landslide were discovered in the study area.A total of 233 geologic hazard sites have changed since 2009.Among the formation conditions of geologic hazards,the geological environment conditions have changed slowly,while human engineering activities and rainfall have been the most active factors,which jointly induced geologic hazards.

关 键 词：地质灾害 湟水流域 动态变化 遥感监测 变化分析 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]