河南科学
河南科學
하남과학
Henan Science
2015年
9期
1647-1652
,共6页
王莎%王晓峰%黄先超%康丽玮
王莎%王曉峰%黃先超%康麗瑋
왕사%왕효봉%황선초%강려위
陕西秦岭%暴雨灾害%风险评价%GIS
陝西秦嶺%暴雨災害%風險評價%GIS
협서진령%폭우재해%풍험평개%GIS
Qinling Mountains%rainstorm disaster%risk assessment%GIS
以陕西秦岭为研究区域,应用16个县、市的DEM地理、气象、社会经济等数据,运用克里格插值法、层次分析法(AHP)和极差标准化等,从致灾因子危险性、孕灾环境敏感性、承灾体脆弱性以及防灾减灾能力等方面建立陕西秦岭地区暴雨灾害风险评价模型;利用GIS软件中的自然断点分类法、去量纲化和栅格计算器分析等方法,进行陕西秦岭地区暴雨灾害风险指数的计算分析。结果表明:汉中市、石泉县、安康市和商南县处在暴雨灾害高风险区,宝鸡市、商州市处在低风险区;将暴雨灾害风险综合指数图与近10年陕西秦岭地区暴雨灾害实际发生情况进行对比,与实际基本吻合,风险评价精度较高,为陕西秦岭地区暴雨灾害预警及防灾减灾提供借鉴。
以陝西秦嶺為研究區域,應用16箇縣、市的DEM地理、氣象、社會經濟等數據,運用剋裏格插值法、層次分析法(AHP)和極差標準化等,從緻災因子危險性、孕災環境敏感性、承災體脆弱性以及防災減災能力等方麵建立陝西秦嶺地區暴雨災害風險評價模型;利用GIS軟件中的自然斷點分類法、去量綱化和柵格計算器分析等方法,進行陝西秦嶺地區暴雨災害風險指數的計算分析。結果錶明:漢中市、石泉縣、安康市和商南縣處在暴雨災害高風險區,寶鷄市、商州市處在低風險區;將暴雨災害風險綜閤指數圖與近10年陝西秦嶺地區暴雨災害實際髮生情況進行對比,與實際基本吻閤,風險評價精度較高,為陝西秦嶺地區暴雨災害預警及防災減災提供藉鑒。
이협서진령위연구구역,응용16개현、시적DEM지리、기상、사회경제등수거,운용극리격삽치법、층차분석법(AHP)화겁차표준화등,종치재인자위험성、잉재배경민감성、승재체취약성이급방재감재능력등방면건립협서진령지구폭우재해풍험평개모형;이용GIS연건중적자연단점분류법、거량강화화책격계산기분석등방법,진행협서진령지구폭우재해풍험지수적계산분석。결과표명:한중시、석천현、안강시화상남현처재폭우재해고풍험구,보계시、상주시처재저풍험구;장폭우재해풍험종합지수도여근10년협서진령지구폭우재해실제발생정황진행대비,여실제기본문합,풍험평개정도교고,위협서진령지구폭우재해예경급방재감재제공차감。
By using of geographical,meteorological and sociometric data of 16 counties in Shaanxi Qinling Mountains, based on the Kriging interpolation method,Analytic Hierarchy Process method and the maximum difference normalization method,a assessment system of rainstorm hazard risk was set up from the risk of hazard causing factors,the sensitivity of hazard pregnant environment,the vulnerability of hazard bearing body and the ability of hazard prevention and mitigation. The comprehensive risk index model of the rainstorm hazard has been established though adopting methods of Natural breakpoint taxonomy,standardized and Raster calculator analysis in ArcGIS software. Finally,in order to put these methods mentioned into practice,selected Shaanxi Qinling Mountains as study area,the spatiotemporal and quantitative analyzing and assessing of rainstorm hazard risk have been carried out. Results indicate that Hanzhong City,Shiquan County,An’kang City and Shangnan County are in high risk areas of rainstorm hazard,while Baoji City,Shangzhou District in lower ones. Comparing the figures of comprehensive risk index with the frequency of rainstorm hazard in Shaanxi Qinling Mountains in recent 10 years,the results are similar. Because of the high accuracy of risk evaluation,these results above can provide reference for the heavy rainstorm hazard warning and prevention in Qinling Mountains of China and other same type climatic regions in the world.