【摘要】 通过对乌梁素海地区近50年的气象数据进行统计分析,研究该地区气候变化演变规律及特征。结果表明,乌梁素海地区自1956~2011年,整体温度呈上升趋势,其中1984年之后上升最为显著,各季节温度总体也呈上升趋势,冬季上升最快;年均降雨量总体略呈下降趋势,降雨天数总体呈逐渐下降趋势,降雨强度变大;年均蒸发量整体呈增长趋势,1980年代蒸发量最大,1956~2000年趋势增长,2001~2011年有缓慢下降趋势,整体夏季增长较快。其属于半干旱气候,其中近1997年以来干燥系数呈稳定增长趋势。更多还原

【Abstract】 This paper applies the method of statistics to Wu Liang Suhai region for nearly 50 years of meteorological data statistical analysis,and finds out the evolution law and characteristics. Analysis shows that the overall temperature of Wu Liang Suhai region is on the rise from 1956 to 2011,and the most significantly is after 1984,the four seasons’ temperature is into a rising trend,the fastest rising is in the winter. Overall,avarage annual rainfall declined slightly,however rainfall days showed a more clear downward trend,thus we can deduce that the rainfall intensity has improved; The overall annual evaporation is on the rise,and the largest is in the 1980 s,there is a growing trend from 1956 to 2000 and the annual evaporation decreased slowly from 2001 to 2011,the faster growing is in the summer. It belongs to the semi- arid climate,and the dry coefficient showed a trend of steady growth since 1997.更多还原