摘要
以气象站实测数据、DEM数据和统计数据作为数据源,100m×100m的栅格单元作为基本的评估单元,结合区域灾害系统论建立了洪水灾害风险评估指标体系,并采用极差法、层次分析法、综合指数法和百分位阈值法等方法对长白山地区洪水灾害风险进行了评估.结果表明:长白山地区洪水灾害风险等级整体上西部较高东部较低,呈现出由西部向东部逐渐递减的趋势,其中临江市、抚松县和长白县的洪水灾害风险等级较高,和龙市和安图县的洪水灾害风险等级较低.
We used the weather station observational data ,the DEM data and the statistical data as the data sources ,used the 100 m ×100 m grid cell as the basic unit of assessment to establish the flood disaster risk assessment index system based on regional disaster system theory ,and then used the range method ,analytic hierarchy process ,comprehensive index method and percentile threshold method to assess the flood disaster risk in Changbai Mountain area .The results showed that ：the flood disaster risk grades of Changbai Mountain area are high in the west and low in the east in general ,and represent a gradual descending trend from the west to the east ,among them ,the flood disaster risk grades of Linjiang City ,Fusong County and Changbai County are higher ,and the flood disaster risk grades of Antu County and Helong City are lower .
出处
《延边大学学报（自然科学版）》
CAS
2014年第1期79-84,共6页
Journal of Yanbian University（Natural Science Edition）
基金
国家自然科学基金资助项目(41071333
41110006)
首尔市立大学GIS专家教育基金资助项目
关键词
自然灾害
区域灾害系统论
洪水灾害风险评估
长白山地区
GIS
natural disaster
regional disaster system theory
flood disaster risk assessment
GIS
Changbai M ountain area
