降雨因子对水土流失量起着决定性的作用。
The rainfall factors have decisive influence on the amount of soil erosion.
在编制公路工程水土保持方案时，需要对水土流失量进行预测。
While the program of water and soil conservation is drawn up, the prediction of the amount of soil erosion is needed.
水土流失量的多寡在一定程度上影响到作物产量和生物量的高低。
Amount of soil and water losses influenced crop yield and biomass to a certain extent.
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