Analysis of Synthesis Profit of Autumn Artificial Precipitation around Qinghai Lake

Based on the rainfall data in autumn, an analysis of synthesis profit, such as autumn rainfall utilized in spring, the change of soil moisture, water storage variation in Qinghai Lake and so on, of the artificial precipitation is made. It shows that if the rainfall increased in the autumn, the storage of the soil water was higher next spring, moreover the better the soil moisture, and the earlier the regreening, and the higher herbage yield of the natural grassland.

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