Soil erosion forecasting model can be divided into three levels of slope, small watershed and region in spatial scale.
土壤侵蚀预报模型在空间尺度上可以划分为坡面、小流域和区域三个层次。
The hydrodynamic and environmental properties are investigated at near dam region in the water impoundment period of Three Gorges Reservoir based on site observation and numerical model.
通过现场观测和数值模拟的方法，对三峡水库近坝区在蓄水初期的水流和水环境特性进行了 分析。
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