ground water balance的意思|示意

Analyzing the moisture content balance with the rate of forest coverage increase in straight ground water lever fall. Around 29.9% of the rate of forest coverage environment factor stay best stage.

从水分平衡分析得出，森林覆被率高出一定值时，地下水位下降，在森林覆被率为29.9%左右时，环境因子处于最佳阶段。

On the basis of real pumping of ground water, the water resources evaluated by the water balance method. The evaluating result of water quantity was checked by finite element method.

以现状地下水开采量为依据，采用水均衡法评价了研究区水资源总量，并利用有限单元法来模拟分析验证。