Assessment and Regionalization of Drought Disaster Risk in Shaanxi Province Based on GIS
In order to understand the actual situation of drought disaster risk in Shaanxi Province in a more comprehensive way,on the basis of the climatic background and social economic environment of drought disaster in Shaanxi,and combining with the related theory of natural disaster,we established the risk assessment model of drought disaster with the four assessment index subsystems containing the dangerousness of disaster risk,the vulnerability of the disaster environment,the exposure of the disaster bearing body,and the ability of disaster prevention and reduction;Based on the meteorological,ecological and social economic data of Shanxi Province,the assessment and regionalization of drought disaster risk in Shaanxi Province were carried out by using the GIS spatial data analysis.The results shows that:(1)The risk level of the disaster factor decreases from north to south,the highest hazard rank is in Yulin,followed by Yan'an,Tongchuan,Baoji,Xianyang,Yangling,Weinan,Xi'an,Shangluo,Ankang and Hanzhong.(2)The vulnerability of disaster environment also decreases from north to south.The size of vulnerability respectively is Yulin,Yan'an,Tongchuan,Baoji,Xi'an,Weinan,Xianyang,Yangling.(3)The exposure of disaster-bearing body of drought disaster is the highest in Yulin,followed by middle Guanzhong Area,Weinan,Xianyang,Baoji,Tongchuan Shangluo,Ankang and Hanzhong.(4)The disaster prevention and reduction capability from large to small is Yulin,Guanzhong Area,Yan'an,Hanzhong,Ankang,Shangluo;(5) The comprehensive risk level of drought disaster in Shaanxi Province gradually decreases from north to south.Drought risk from high to low respectively is Yulin,Yan'an,Tongchuan,Baoji,Weinan,Xi'an,Xianyang,Yangling,Shangluo,Ankang and Hanzhong.
NETL
NSTL
万方数据
维普
