The results showed that spring rainfall in Anshan displayed an upward trend with 2 mm/10a,while summer rainfall was a downward trend with 5 mm/10a. The instabilities of spring and summer rainfalls increased since the 1980s.

• 结果表明:鞍山市春季降水线性变化趋势为增加趋势,其线性变率为2 mm/10 a,夏季降水线性变化趋势为减少趋势,其线性变率为5 mm/10 a,并且从80年代开始春夏季降水的不稳定性开始增强。