科尔沁沙地最典型地区50年气候变化分析  

The Climate Change Analysis of Most Typical Region in Horqin Sandy Area for Nearly 50 Years

作　　者：张桂英 王朝敏 卞仁江 曲晓娟 杨向梅 

机构地区：[1]奈曼旗气象局,内蒙古通辽028300 [2]内蒙古大气探测技术保障中心,呼和浩特010051

出　　处：《中国农学通报》2012年第23期287-290,共4页Chinese Agricultural Science Bulletin

基　　金：国家林业局荒漠化监测项目(FS2001-01)

摘　　要：为了研究干旱少雨、生态环境脆弱、土地荒漠化严重的科尔沁沙地的沙漠化发展变化特征,为其治理提供理论依据,根据其最典型地区奈曼旗1961—2010年的气象资料,分析了近50年气温、降水、蒸发及风沙天气的变化。结果表明：近50年间,科尔沁沙地的气温呈上升趋势,冬、春季增温尤为显著;降水量年际间波动较大,总体呈下降趋势;年平均风速自20世纪90年代至今较平稳地在3.2~3.3m/s之间波动;风沙天气从1995年开始基本得到遏制。温度升高、蒸发量增加及降水量减少对科尔沁沙地的沙漠化起到一定的推动作用,平均风速和风沙天气对其生态环境的影响正逐渐减小。In order to study the desertification characteristics in Horqin sand of drought and little precipitation, fragile ecological environment and severe land desertification, and to provide a theoretical basis for corresponding management, in accordance with meteorological data of Naiman Banner Region from 1961 to 2010, changes of temperature, precipitation, evaporation and sandstorm weather in the past 50 years were analyzed. The results showed that in the last 50 years, the temperature of Horqin sand had been rising particularly significant in winter and spring. Wide fluctuation of precipitation among years showed a decreasing tendency in general. Average annual wind speed had been fluctuating in a steady manner in between 3.2 and 3.3 m/s since the 1990s. And sandstorm weather had been basically well under control since 1995. High temperature, increased evaporation and decreased precipitation had jointly resulted in desertification of Horqin sand with a gradually lessening impact of average wind speed and sandstorm weather on the ecological environment there.

关 键 词：科尔沁沙地 气候变化 气温 降水量 分析 

分 类 号：P423.2[天文地球—大气科学及气象学]