环境科学与管理
環境科學與管理
배경과학여관리
ENVIRONMENTAL SCIENCE AND MANAGEMENT
2012年
2期
35-39
,共5页
标准化降水指数(SPI)%反距离加权法%干旱时空特征%吉林省东部山区
標準化降水指數(SPI)%反距離加權法%榦旱時空特徵%吉林省東部山區
표준화강수지수(SPI)%반거리가권법%간한시공특정%길림성동부산구
standard precipitation index(SPI)%inverse distance weighted(IWD)%spatial-temporal characteristics of drought%mountains of eastern Jilin Province
基于吉林省东部山区13个气象站点1958—2009年逐月降水量数据,采用标准化降水指数（SPI）作为干旱评价因子,对吉林省东部山区干旱程度及时空特征进行分析。在时间上,吉林省东部山区干旱具有持续性的特点,干旱出现的频率在增加。在空间上,发生轻旱的空间分布面积最广,安图县、和龙市、延吉市、龙井市、图们市、梅河口市、通化县和集安市的东南部这些地区轻旱、中旱、重旱的程度均较为严重。
基于吉林省東部山區13箇氣象站點1958—2009年逐月降水量數據,採用標準化降水指數（SPI）作為榦旱評價因子,對吉林省東部山區榦旱程度及時空特徵進行分析。在時間上,吉林省東部山區榦旱具有持續性的特點,榦旱齣現的頻率在增加。在空間上,髮生輕旱的空間分佈麵積最廣,安圖縣、和龍市、延吉市、龍井市、圖們市、梅河口市、通化縣和集安市的東南部這些地區輕旱、中旱、重旱的程度均較為嚴重。
기우길림성동부산구13개기상참점1958—2009년축월강수량수거,채용표준화강수지수（SPI）작위간한평개인자,대길림성동부산구간한정도급시공특정진행분석。재시간상,길림성동부산구간한구유지속성적특점,간한출현적빈솔재증가。재공간상,발생경한적공간분포면적최엄,안도현、화룡시、연길시、룡정시、도문시、매하구시、통화현화집안시적동남부저사지구경한、중한、중한적정도균교위엄중。
The mountains area of eastern Jilin Province is the most important ecological barrier of northeast Asia.This paper studies the spatial-temporal characteristics of drought in the mountain areas of eastern Jilin Province during 1958 to 2009 by Standardized Precipitation Index（SPI）,one of the drought indexes widely used.According to precipitation data from 13 stations in eastern Jilin Province,SPI12 are calculated to show the temporal characteristics.From the perspective of time,the drought in the mountains of eastern Jilin Province is periodic and sustainable and the frequency of drought is on the increase.From the perspective of space,the light drought is most widely distributed,while the areas of Antu,Helong,Yanji,Longjing,Tumen,Meihekou,Tonghua and the southeast of Ji＇an are severely affected by light drought,middle drought and severe drought.
