基于ArcGIS奉节新城区地质灾害易损性评价

ArcGIS Evaluation on Geological Disaster Vulnerability in Fengjie Region

奉节地区地质灾害频发,给当地人民生命财产带来较大威胁。为了减轻地质灾害造成的危害,为当地建设提供科学依据,本文以奉节新城区为研究对象,运用ArcGIS 9.2软件对研究区内各影响因子进行分析,在此基础上对影响奉节新城区地质灾害易损性的因子进行运算,最后得出易损性区划图。结果表明:奉节地区滑坡总体呈集中分布的特点,并主要集中分布于长江和梅溪河沿岸,滑坡发育与复活大多与水库蓄水密切相关,区域易损性受人类活动影响较大。

In Fengjie region,geological disasters frequently happened,bringing great threat to local people and their properties.In order to reduce the harm caused by geological disasters and provide a scientific basis to local construction,this paper,based on Fengjie study area,using ArcGIS 9.2 software,analyzes the impact of factors, divided into basic factors and predisposed factors.After the calculation of the vulnerability factors of Fengjie region, the paper also gets the vulnerability zoning map as a result.The conclusion shows that:The landslides in Fengjie region is concentrated and mainly located in the coast of the Yangtze River and the Meixi Riverside;Most of landslides are closely related with the reservoir water storage;Regional vulnerability is mainly influenced by human activities.