宝鸡市冰雹灾害风险区划研究  

Study on the risk zoning of hail disaster in Baoji

作　　者：曹茹 陈浩[1,2] CAO Ru;CHEN Hao(School of Geography and Environment,Baoji University of Arts and Sciences,Baoji 721013,China;Shaanxi Key Laboratory of Disasters Monitoring and Mechanism Simulation,Baoji 721013,China)

机构地区：[1]宝鸡文理学院地理与环境学院,陕西宝鸡721013 [2]陕西省灾害监测与机理模拟重点实验室,陕西宝鸡721013

出　　处：《自然灾害学报》2019年第2期145-152,共8页Journal of Natural Disasters

基　　金：陕西省科技统筹创新工程计划项目(2016KTCL03-17);陕西省教育厅重点实验室项目(16JS006);宝鸡文理学院博士启动项目(ZK16065)~~

摘　　要：采用宝鸡12个县区1961—2016年的降雹资料、防雹炮点分布和耕地防护资料,结合宝鸡市DEM高程、地貌类型、土地利用分布等地理信息基础数据;人口密度、经济密度、各县市农业人口占比、耕地面积占比、农业生产总值占比、人均GDP等社会经济资料;选取致灾因子危险性、承灾体暴露度和承灾体脆弱性3个评价因子,利用ArcGIS的空间栅格计算、自然间断分类和图斑合并等功能进行宝鸡市冰雹灾害风险区划研究。结果表明:宝鸡市冰雹灾害风险以中、高度风险区为主,多出现在北部低山区和台塬区,其中陇县雹灾风险指数最大,城市中心区以及南部高山区以低风险区为主。In this paper,multiple data sources were used to carry out the risk zoning of hail disaster in Baoji.The collected data include hail records of 12 counties of Baoji during 1961-2016,anti-hail canon stations,records of cultivated land protected by canons,DEM,landform type,land use,population density,economic density,proportion of agricultural population in each county,proportion of cultivated land area,proportion of agricultural production and per capita GDP.The risk level of disaster-inducing factors,the exposure of disaster bearing body and the vulnerability of disaster bearing body were selected as evaluation factors and the indices system of evaluation factors were based on the collected data.Grid computing,classification and spot merging of ArcGIS software were used to generate the final zoning map.Results show that hail disaster in Baoji is mainly at middle and high risk level.Serious disaster generally occurs in the northern low mountain area and the tableland area,among which Longxian has the highest risk level.The central urban area and the southern alpine region are mainly at low risk level.

关 键 词：冰雹灾害 风险区划 宝鸡地区 

分 类 号：S427[农业科学—植物保护] X43[环境科学与工程—灾害防治]