基于ArcGIS技术的榆林市冰雹灾害风险区划  

ArcGIS-based Risk Zonation of Hail Disaster in Yulin

作　　者：张建康 

机构地区：[1]陕西省榆林市气象局,陕西榆林719000

出　　处：《农业灾害研究》2015年第12期32-34,共3页Journal of Agricultural Catastrophology

摘　　要：以榆林市辖区内12个县级气象观测站1951—2010年冰雹灾害记录,1951—2012年榆林市民政局统计的县域冰雹灾情数据,2012年榆林市各县区土地类型数据,以乡镇为单元的社会统计数据等资料为基础,通过1∶250 000 DEM数字高程模型进行分析模拟,选取与冰雹有影响的地形因素,统计冰雹频次、人口、GDP、耕地分布等作为评价因子,应用Arc GIS的空间分析功能,分别计算冰雹灾害的敏感性、危险性、易损性,建立分因子的风险区划模型,在此基础上进行加权叠加,形成榆林市冰雹灾害风险区划,有助于提高榆林市冰雹灾害的风险防控能力。The frequency and times of hail disaster, population, GDP and farm land distribution affecting hail occur- rence were chosen as the estimation fac- tors in the zonation and assessment of hail disaster in Yulin based on the data of hail disaster from 12 meteorological stations during 1951-2010 and from Yulin Municipal Bureau of Civil Affairs during 1951-2012, land use types of ev- ery county and district in 2012, social statistic data, etc. The hail sensitivity, disaster hazard and vulnerability were calculated by using ArcGIS spatial anal- ysis, and then the hail risk zonation of Yulin was obtained. These results helped to improve the ability of prevention and control of hail disaster in Ynlin.

关 键 词：冰雹灾害 风险区划 ARCGIS 榆林 

分 类 号：X43[环境科学与工程—灾害防治]