摘要
科尔沁沙地位于季风气候边缘,旱涝气候演变剧烈。本文利用历史文献资料和实测的降水资料,对科尔沁沙地近300年旱涝气候演变规律进行了较周详地探讨与研究。运用旱涝指数、确定了区域旱涝等级,分析与论述了区域旱涝阶段和相对湿润期、干旱期出现的规律和地域分布特征。
The climate of Horqin Sandy Land is on the edge of monsoon climate, and the drought/flood climate varied greatly. In this research the historical literature material and the actual precipitation material were used to carry on minutely discussion and research to the rules of drought/flood climate variations in Horqin Sandy Land during the last 300 years. Using the drought/flood index, the drought/flood rank regions were determined and then the region drought/flood stage, the rules of the relatively moist time/arid time appearance and the regional distribution characteristic were analyzed and elaborated.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2008年第4期100-107,共8页
Journal of Arid Land Resources and Environment
基金
国家自然科学基金项目(40361008)资助
关键词
旱涝指数
旱涝等级
旱涝时空分布
科尔沁沙地
drought/flood index
drought/flood rank
drought/flood spatial and temporal distribution, Horqin Sandy Land
