关键词: 社区减灾能力, 熵权-灰靶模型, 靶心度, GIS叠置分析

Abstract: The community is the city cell and the basic unit, and its construction of disaster prevention and mitigation plays an extremely important role in the construction of urban security system. Comprehensive estimation method of community disaster reduction capability was studied based on entropy weight-grey target model and GIS overlay analysis technique. Evaluation index system, including about 30 two levels indicators,was firstly built up from six aspects of disaster risk assessment ability, rescue and support capability, etc. After the construction of influence space, model standardization processing, grey target transform, and classification of approaching degree, the disaster reduction capacity was then grading assessed. Taking Suzhou new district as a case study area, the spatial distribution characteristics of community disaster reduction capability were obtained by using ArcMap10.2 software. The results show that the overall ability of community disaster reduction in the east of study area is better than that in the west. The capacity of disaster risk assessment and disaster management of all streets and communities in the study area are acceptable. The overall defense capability of the project is unevenly distributed. The conclusion can be inferred that community comprehensive disaster reduction capability is insufficient from the poor economic support ability, rescue and support capability and public cognitive ability. The demonstration community construction of disaster reduction should be shifted to the connotation construction of community's comprehensive disaster reduction capability.

Key words: community disaster reduction capability, entropy weight and grey target model, approaching degree, GIS overlay analysis