Classical statistical analyses show significant spatial variability of soil erodibility K values at a scale of small watershed, the variance coefficient of which is 39.94%.
经典统计学方法分析表明，在小流域尺度下土壤可蚀性K值存在很强的空间变异性，其变异系数达39.94%。
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。
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