广东省县级冬季寒害危险度精细区划方法探讨  

Exploration of fine zoning of winter cold damage in county level of Guangdong Province

作　　者：刘尉[1,2,3,4] 王春林 郑璟[1] 黄珍珠[1] 

机构地区：[1]广东省气候中心,广东广州510080 [2]广州地理研究所,广东广州510070 [3]中国科学院广州地球化学研究所,广东广州510640 [4]中国科学院大学,北京100049

出　　处：《自然灾害学报》2013年第5期254-261,共8页Journal of Natural Disasters

基　　金：广东省科技计划(2012B020314006;2012A020200018)

摘　　要：利用广东省86个地面气象站1981-2010年30 a的冬季逐日平均气温、最低气温,统计了这30 a中冬季寒害轻、中、重度等级的日数,进一步计算了30 a的平均"等效寒害日数",并建立了其与30 a中1月平均气温的关系模型。利用经高程订正的1月平均气温的100 m×100 m格点数据及该关系模型,得到了等效寒害年日数的格点数据,并对其进行了冬季寒害危险度等级划分。最后利用SURFER工具实现了广东省县级冬季寒害危险度精细化区划。结果表明,上述区划较好地反映了广东境内冬季寒害的分布情况。Based on daily average and minimum air-temperature during 1981-2010 from 86 meteorological stations in Guangdong province, the number of light, medium and high degree winter cold damage days were counted, and then the ＂equivalent cold damage days＂ was calculated, and a model of relationship between equivalent cold damage days and average air-temperature in January was constructed. Based on this model and 100m×100m grid data on average air-temperature in January, corresponding grid data for equivalent yearly cold damage days was deduced and the degree of winter cold damage was classified. At last, by using the GIS tool of SURFER, the fine zoning of winter cold damage in county level was carried out. The results show that the zoning mentioned above can reflects well the actual situation of winter cold damage in Guangdong Province.

关 键 词：冬季寒害 危险度 精细区划 等效寒害日数 广东省 

分 类 号：P49[天文地球—大气科学及气象学]