夏季降水与年降水变化趋势类似，秋季与冬季降水波动较小，基本保持平稳。
Precipitation in summer showed a similar trend as the annual precipitation, and precipitation in autumn and winter no evident change trend.
ENSO 与东亚夏季风降水的年际变化以及准二年周期有着明显的联系。
There is a considerable connection between ENSO and the interannual variations(QBO)of summer monsoon rainfall.
对于林区植被，降水的年际变化对地表植被的影响比较小，森林区植被指数最高；
The vegetation in forest area, in which has the highest vegetation index, the impact of annual change of precipitation on surface vegetation was slight.
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