新疆石河子市近51a农业气候资源变化特征分析

Variation of agricultural climate resources in Shihezi of Xingjiang in recent 51 years

应用新疆石河子气象局1960-2010年气象资料,分析了石河子市近51a来的气候变化。结果表明：石河子市年降水量呈增多趋势,气温呈上升趋势,蒸发量呈减少趋势。1999-2010年随着年平均气温的升高,初霜期出现连续性明显偏晚,终霜期出现偏早趋势,年代际平均气温升高使初霜期推迟和终霜期提前是造成无霜期呈延长趋势的主要原因;≥0℃和≥10℃活动积温呈现增加趋势。

The data from Shihezi Meteorological Bureau in Xinjiang Province during the period of 1960- 2010 was applied to analyze the climate changes in Shihezi city. The results showed that the precipitation and the temperature increased but the evaporation decreased. Along with annual mean temperature＇s increase during 1999-2010,the date for the beginning of frost was obviously postponed; and the date for the end of frost presented stable and early trend. The frost- free time presented prolonged tendency. The accumulated temperature of ≥0℃ and≥10℃ presented increasing trend.