近50年典型草原的气候变化

采用锡林郭勒盟阿巴嘎旗、苏尼特左旗、正蓝旗、正镶白旗的4个气象站点1968-2009年气候资料,运用线性倾向估计及滑动平均等统计方法,得出了锡林郭勒盟典型草原的气候变化特征和规律。结果表明：1968-2009年,锡林郭勒盟典型草原的年平均气温呈明显上升趋势,上升速率达0.54℃/10 a。年降水量则有下降趋势,但不是很显著,下降速率仅为-10.352 mm/10 a。且锡林郭勒盟典型草原的气温和降水量变化趋势与内蒙古的基本一致。

Climate Variation of the Typical Steppe in Recent 50 Years

Based on the climatic data,from 1968 to 2009,of four weather stations in Abaga Qi,Sunite Zuo Qi,Zhenglan Qi,Zhengxiangbai Qi in Xilinguole League,by use of the linear trend estimation and moving average statistical methods,the characteristics and rules of climate variation of the typical steppe were obtained.The results showed that from 1968 to 2009,the average annual temperature of the typical steppe in Xilinguole League presented an obvious rising tendency,with a rising rate of 0.54 ℃/10 a.The precipitation was on the downtrend,but wasn＇t significant,with a decreasing rate of-10.77 mm/10 a.The variation trends of temperature and precipitation in the typical steppe in Xilinguole League were basically similar with Inner Mongolia.