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基于CBERS数据的福建南平地质灾害动态遥感解译

DOI: 10.6046/gtzyyg.2014.03.25, PP. 153-159

Keywords: 地质灾害,遥感解译,福建省南平市,中巴地球资源卫星(CBERS)

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Abstract:

利用多期中巴地球资源卫星(CBERS)数据开展灾害发生年际变化规律的遥感解译回溯性研究,对拓展国产遥感数据在地质灾害研究中的应用具有重要意义。以灾害频发的福建省南平市为研究区,收集1999-2008年的11景CBERS图像,建立灾害解译标志;采用基于GIS的人机交互综合解译方法,结合野外考察和验证,获取8个年度(2001年和2002年无图像可用)的灾害点共2059处。动态分析结果表明,研究区内地质灾害在空间上集中发生在居民点周边、公路切坡、幼林地和经济林地等处,在时间上集中发生于2000年和2005年(分别发生582处和766处,占8个年度灾害总数的65%),表现出灾害发生的时空不均一性。研究表明,研究区灾害以因强降雨过程触发的浅层土质滑坡为主,利用CBERS数据可开展地质灾害发育规律的逐年动态变化监测。

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