土壤本身即是巨大的蓄水库，土壤大量流失，土壤含水量和土壤总贮水量均随之减少，造成农业干旱或洪涝灾害。
The soil itself is a huge reservoir, it is lost largely, its water content and total storage is reduced afterwards, that causes agricultural drought or flood disaster.
在臭柏群落演替过程中土壤含水量总的趋势为先上升后下降。
With the succession of Sabina vulgaris community, the general trend of soil moisture increased firstly after declining.
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