基于AHP-CRITIC赋权法的广西冬种马铃薯低温寒冻害风险评估与区划OA

Low-temperature freezing damage is one of the major meteorological disasters affecting winter-planted potatoes in Guangxi.Conducting risk assessment and zoning of low-temperature freezing damage to winter-planted potatoes in Guangxi is of great significance for facilitating winter potato production to seek advantages and avoid disadvantages,preventing and mitigating disasters,and optimizing planting layout.Based on the principles of natural disaster risk analysis,this study inte-grated multisource data,including daily station-by-station meteorological data and potato production data,socioeconomic statistical data,and geographic information data.A risk assessment system for low-temperature freezing damage to win-ter-planted potatoes in Guangxi was established from four aspects:hazard of disaster-inducing factors,vulnerability of disas-ter-bearing bodies,exposure of disaster-bearing bodies,and disaster prevention and mitigation capacity.Using the AHP-CRITIC weighting method,combined with the linear weighted comprehensive evaluation method and GIS spatial analy-sis technology,a refined risk zoning thematic map of low-temperature freezing damage to winter-planted potatoes in Guangxi was compiled.The results show that the high-risk areas for low-temperature disasters of winter-planted potatoes in Guangxi mainly include most areas of Guilin and Hezhou cities,the northern parts of Liuzhou and Hechi cities,as well as alpine mountainous areas of Baise city,and counties(districts)such as Jinxiu,Mengshan,and Cenxi.The low-risk areas are mainly distributed in coastal regions,areas near the Youjiang River Valley and Zuojiang River Valley,and parts of Nanning,Guigang,and Yulin cities.The evaluation and zoning results have strong pertinence,providing decision-making references for winter potato production in Guangxi to seek advantages,avoid disadvantages,optimize layout,and prevent and mitigate disasters.