“5·12”汶川特大地震成都市地质灾害易损性区划
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摘要
汶川"5.12"特大地震发生后,成都市的都江堰等5个市县遭受了不同程度的破坏,地质灾害是震后对生态系统和社会经济系统造成威胁的方式。易损性区划不仅反映灾区的生态系统,社会经济系统对地质灾害的敏感性,而且可以划分出对灾害最敏感的区域和承灾体,为灾后的重建规划提供依据。采用贡献权重迭加模型对5个市县进行评价,评价指标包括自然资源环境、社会经济和地质灾害。结果表明,高易损度区、中易损度区、低易损度区分别占5个地区总面积的19.3%、22.64%、58.04%,并且根据评价结果,对灾区易损原因进行了分析。
After Wenchuan earthquake,Dujiangyan、Pengzhou、Dayi、Chongzhou、Qionglai,which are belonged to Chengdu,suffered varying degrees of damage and are the most serious areas.Geological disasters are the most primary styles which threaten the ecosystem and socio-economic systems.Division reflects not zoning of vulnerability reflect sensitivity of ecosystem and socio-economic systems to geological disasters and can be carved out preparedness and post-disaster reconstruction planning.Contributing weight approach is employed to zoning vulnerability degree.Index including environment,socio-economy and geological disasters.outcome showed that areas of high vulnerability,middle vulnerability and low Vulnerability is corresponding to 19.32%,22.64%,58.04% of study area,respectively.Then causes of vulnerability are analyzed through outcome.
After Wenchuan earthquake,Dujiangyan、Pengzhou、Dayi、Chongzhou、Qionglai,which are belonged to Chengdu,suffered varying degrees of damage and are the most serious areas.Geological disasters are the most primary styles which threaten the ecosystem and socio-economic systems.Division reflects not zoning of vulnerability reflect sensitivity of ecosystem and socio-economic systems to geological disasters and can be carved out preparedness and post-disaster reconstruction planning.Contributing weight approach is employed to zoning vulnerability degree.Index including environment,socio-economy and geological disasters.outcome showed that areas of high vulnerability,middle vulnerability and low Vulnerability is corresponding to 19.32%,22.64%,58.04% of study area,respectively.Then causes of vulnerability are analyzed through outcome.
引文
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[8]Liu Lanfang.Assessment of agricultural vulnerability toflood-water logging disaster in hunan province[J].Re-sources Science,2006,28(6):60-67.[刘兰芳.湖南省农业洪涝灾害易损性分析与评价[J].资源科学,2006,28(6):60-67.]
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