摘要
从灾害风险理论出发,基于致灾因子、成灾环境、承灾体和防灾减灾4个方面构建了包括标准化降水蒸散指数(SPEI)、降水、土壤、地形、地貌、林草地、人口、经济、常用耕地和灌溉保证率的干旱灾害风险评估指标体系,对贵州省1949—2011年干旱灾害进行综合评价,并利用GIS图层叠加技术对贵州农业干旱灾害风险区划进行研究。结果表明,贵州省农业干旱灾害风险总体上呈现由西北部高,东南部低;风险最高的为毕节西部和遵义中部地区。
From the theory of disaster risk and the hazard-causing factor,four aspects,such as hazardpregnant environment,hazard-bearing body,and disaster prevention and mitigation were used to construct the drought disaster risk assessment index system,including SPEI,precipitation,soils,terrain,landforms,forest and grassland,population,economy,common cultivated and the irrigation guarantee rate,and comprehensive evaluated the risks of drought disaster in Guizhou from 1949 to 2011.Finally,GIS map overlay method was used to study the zoning of Guizhou＇s agricultural drought disaster risk.The results showed that the north-west part of Guizhou had a higher risk while the south-east part＇s risk were lower,and the highest risk was in the west of Bijie and the central part of Zunyi.
出处
《灌溉排水学报》
CSCD
北大核心
2016年第2期44-49,共6页
Journal of Irrigation and Drainage
基金
河南省科技计划项目(142102110058)
水利部公益项目(201301039)
华北水利水电大学青年科技创新人才项目(70459)
关键词
农业干旱灾害
风险区划
GIS
贵州省
drought disaster of agricultural
risk division
GIS
Guizhou Province
