Understanding macro controlling factors is necessary for evaluating actual soil and water loss and predicting future trend.
为进行区域水土流失现状评价及趋势预测，掌握宏观控制因子是必要的。
Understanding macro controlling factors is necessary for evaluating actual soil and water loss and predicting future trend.
为进行区域水土流失现状评价及趋势预测，掌握宏观控制因子是必要的。
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