彝良县烤烟种植冰雹灾害风险区划及防御对策OA

The article utilizes the hail disaster,damage situation,and various meteorological data of tobacco planting in Yiliang county from June to September 2013 to 2022.Based on the theory of natural disaster systems and relevant theories of hail disaster risk assessment,a hail disaster risk assessment model is constructed from four aspects:hazard factors,vulnerability of disaster bearing bodies,sensitivity of disaster prone environments,and disaster prevention and reduction capabilities.Combined with GIS technology,a refined risk zoning for hail disasters in Yiliang county is carried out.The weights and risk indices of each indicator are calculated using the Analytic Hierarchy Process and Weighted Comprehensive Evalua-tion Method,and the comprehensive risk zoning map of hail disasters in Yiliang County is obtained through grid layer calcula-tion using GIS technology.The results show that the risk of hail disasters in Yiliang County is closely related to the geographical environment.Townships above the second half of the mountain have higher elevations,and the risk of hail disasters is also higher.However,the risk of hail disasters is relatively low in low valley and flat dam areas.The high-risk areas for hail disasters are concentrated in the eastern part of Kuixiang Township,Longjie Township,and Qiushan Town.Long'an Town and Luozehe Town have relatively flat terrain,small elevation difference,and a low frequency of hail disasters,making them low-risk areas.If hail prevention work points are reasonably arranged and artificial hail prevention operations are carried out to strengthen the hail prevention and disaster reduction of tobacco,it is more suitable for large-scale and centralized tobacco planting.