中文摘要：

利用1980年-2010年降水资料,采用线性拟合方法和M-K检验法分析了辽源市年降水量、年降水日数的变化特征。结果表明：近31a辽源市的年降水量及年降水日数整体呈上升趋势,但增加趋势并不明显。辽源市的极端日降水量出现的月份在6月-9月,其中7月、8月份出现的概率最大。在全球变暖的大环境下,极端日降水有提前的趋势。M-K突变检验表明,从1980年-2010年辽源市的年降水量和年降水日数均没有明显突变的年份。

英文摘要：

Basing the precipitation data from 1980- 2010 in Liaoyuan city,using linear fitting and Mann- Kendall methods to analysis change features of the annual precipitation and the number of days with precipitation. It shows that the annual precipitaton and the number of days with precipitation of Liaoyuan city is overall as a whole,but the rising trend is not obvious in recent 31 years. The extreme daily rainfull in Liaoyuan city,always appears during June to September,the maximum probability of extreme daily precipitaion is likely in July and August. Under the global warming background,extreme daily rainfull has a tendency to advance. And the Mann-Kendall mutation test shows that the precipitation and rainy days show no obvious changes in Liaoyuan City form 1980- 2010