【摘要】 "5.12"汶川特大地震发生后,带来的植被破坏、水土流失、次生地质灾害等,给灾区生态环境造成了极大的影响。本文重点以汶川县作为典型区域,运用"3S"技术,通过对汶川县震前、震后的生态环境状况及其变化情况进行定量评价,分析"5.12"大地震对龙门山区生态环境的影响,以期为区域灾后重建提供参考。更多还原

【Abstract】 After Wenchuan earthquake,the disasters such as vegetation destruction,soil erosion,the secondary geo-hazards and so on has great impacted on ecological environment in the disaster area.Taking Wenchuan County as a typical region,this paper applies the 3S technology to quantitatively evaluate the ecological environment before and after earthquake and its change.The influence of the earthquake on ecological environment of Longmen Mountain was analyzed to provide reference for post-disaster reconstruction.更多还原