近38年肃北县气温变化趋势分析

Analysis on the Trend of Air Temperature Variation in Subei County in Recent Thirty-eight Years

利用1973—2010年肃北县的气象资料,对肃北县年际、年代、不同季节、农作物播种期等不同时段的气温变化趋势进行了分析。结果表明,近38 a肃北县年平均气温总体呈逐年上升趋势,以1983—1990年、1994—1998年及2003—2006年3个时段的升温趋势最为明显,1991—2000年增幅最大。不同季节及播种期的平均气温随时间变化均呈一定的上升趋势,以秋季的增温趋势最缓,春、冬季及播种期的温度随时间变化的波动性均较大,增温趋势明显。

The temperature variation trend of different times of inter-annual,age,different seasons,crops sowing were analyzed by using meteorological data of Subei County from 1973 to 2010.The results showed that the overall trend of annual average temperature in recent thirty-eight years was going up year by year.The warming trend of three times of 1983-1990,1994-1998 and 2003-2006 was most obvious,with a maximal increase slope from 1991 to 2000.Different seasons and the average temperature of sowing had a certain upward trend,which the fall of the warming trend was more slow,the volatility with time change of spring,winter and sowing temperature were quite large,the temperature increased trend obviously.