Analysis of risk assessment and zoning for spring tea frost damage in Xuancheng city,Anhui province
Utilizing weather data from 7 national meteorological stations and 157 regional automatic weather sta-tions,DEM,and township tea plantation area data from 1960 to 2022 in Xuancheng city,Anhui province,based on the principle of natural disaster risk assessment,using the indexes of frost hazard,spring tea vulnerability,exposure factor and employing methodologies such as the cloud model,analytic hierarchy process(AHP)and natural breaks method,this research conducts zoning analysis of frost damage risk for spring tea considering hazard index,index weights,and comprehensive risk grading.The results indicate that from 1960 to 2022,the main occurrences of frost damage to spring tea in Xuancheng city was under the conditions of daily minimum temperatures ranging from-4℃to 4℃,and mountains areas has significantly higher comprehensive frost damage risks relative to plains.Mild frost damage is primarily found in the northern parts of Xuancheng,including Xuanzhou district and Guangde city,while moderate frost damage is mainly distributed in the southern and northern townships of Guangde city.Se-vere and extremely severe frost damage chiefly occurs in large parts of Ningguo city,Tingxi township in Jing coun-ty,Xikou town in Xuanzhou district,and townships such as Yangtan,Baidian,Sihe,and Lucun in Guangde city.
国家科技期刊平台
NSTL
万方数据
