中国风吹雪区划  

REGIONALIZATION OF SNOW DRIFT IN CHINA

作　　者：王中隆[1] 张志忠[1] 

机构地区：[1]中国科学院兰州冰川冻土研究所,甘肃兰州730000

出　　处：《山地学报》1999年第4期312-317,共6页Mountain Research

基　　金：国家自然科学基金

摘　　要：分析了我国风吹雪及其变化趋势，指出风吹雪和雪崩不能放在一起区划的原因。提出了风吹雪区划的理论、原则、要求和区划单位系统、指标及方法。据此，把中国风吹雪区划分为２ 个区域、３ 个大区、１３ 个地带、３９ 个地区和１３１ 个区。In the northeast,northwest and southwest of China,snow drift often occurs in winter and spring,causing damage to communications and transportation,factories and mines as well as to agriculture and livestock breeding.Regionalization of snow drift is the research results when snow drift science to more higher level,and also a foundation research work for national economy construction. Snow drift and its future variational tendency is analysed.The theory,principle,requirement and division unit system,and index method on regionalization are proposed.This division is an improvement upon the former, putting the snow drift and avalanche into two different kinds, defining a united index and three grades and dividing five grades by multi_index. According to above mentioned rules,regionalization of snow drift of China can be divided into 2 regions, 3 sub_regions,13 belts,39areas and 131 sub_areas.Meanwhile the all year and seasonal areas with serious,middle and light degree sub_areas are divided from low regionalization unit system,therefore enhance its practical value.

关 键 词：风吹雪 雪崩 区划单位系统 灾害度 雪灾 

分 类 号：P426.636[天文地球—大气科学及气象学] X43[环境科学与工程—灾害防治]