【摘要】 "5.12"汶川特大地震给北川县造成重大灾害损失,根据自然灾害系统理论,从孕灾环境、致灾因子、承灾体和灾情等四个方面分别选取相关评价指标,通过GIS空间分析得到了北川县"5.12"地震灾害敏感度、风险度、脆弱度和灾度分布图,采用1.6km*1.8KM网格为灾害区划基本单元,在MAPGIS软件中进行叠加分析,根据拟定的区划原则,采用基于空间邻域关系的区域合并方法对北川县地震次生灾害区域分异进行分析并进行灾害程度区划,得到四个类型灾害区。为北川县的灾后重建规划提供科学依据,为加快北川县灾后重建和县域经济可持续发展服务。更多还原

【Abstract】 "5.12" Wenchuan Earthquake in Beichuan causes great losses.The authors select evaluation indicators from the pregnant disaster environment,disaster-causing factors,disaster-affected bodies and disaster-affected bodies according to natural disaster system theory and obtain the sensitivity,risk,vulnerability and disaster distribution maps in Beichuan with GIS spatial analysis.3km3km basic grid unit is used to overlay the four maps in MAPGIS;regional diversity is analyzed;earthquake regions of Beichuan are regionalized in disaster extent with the combined methods of neighborhood-based spatial relations in accordance with the proposed regionalization principles,and four types of disaster areas are mapped.The result will provide scientific basis for the planning of post-disaster reconstruction,and will serve for the speeding up post-disaster reconstruction and socio-economic sustainable development in Beichuan.更多还原