云南农业冰雹灾害风险区划与评估OA

Using hail data from 2015-2024,30-second resolution digital elevation data,fixed operational site information,based on the analysis of the distribution characteristics of hail activity and nonlinear fitting of to-pography and hail frequency,hail risk zoning in Yunnan's tobacco-growing regions are analyzed by selecting haz-ard factors,sensitivity factors,vulnerability factors,and defense capability factors and the Analytic Hierarchy Pro-cess(AHP),Geographic Information Systems(GIS),and the natural breaks classification method.The results show that,under the combined influence of terrain and synoptic weather patterns,areas with high hail activity in Yunnan Province correspond to the main flue-cured tobacco producing regions.The central and eastern parts of Yunnan experience the most frequent hail events and have the largest flue-cured tobacco planting areas at the same time,along with the highest terrain sensitivity factors.Although hail events in these regions are mainly short-duration and small-sized hail,they exhibit high vulnerability and relatively weak defense capacity.Conse-quently,these areas represent the regions with the highest hail risk for flue-cured tobacco across the province,as well as the areas with the highest risk for artificial hail suppression operations.In contrast,the northwestern and southwestern regions,where the planting area of flue-cured tobacco is relatively small,are classified as low-risk areas for both flue-cured tobacco hail damage and hail suppression operation sites.In terms of factor selection,the actual conditions of flue-cured tobacco production in Yunnan Province is better reflected in this study.The hail disaster risk zoning for tobacco-growing regions interpolated to the township level emphasizes the risk char-acteristics of flue-cured tobacco cultivation in different townships,while the zoning interpolated to operation sites highlights the risk characteristics of artificial hail suppression operations.The findings can provide a scientific basis for adjusting the industrial structure of flue-cured tobacco cultivation and optimizing the spatial layout of ar-tificial hail suppression operation sites in Yunnan Province.