用耕地标准系数法系统地研究了1996年以来我国耕地数量的隐性流失情况，并分析了引起耕地数量隐性流失的原因。
The recessive loss of our cultivated land since 1996 was studied by using the standard coefficient method. And the causes for the recessive loss were analyzed as well.
随着土壤流失程度的增大，流域不同土地利用状况下的A层土壤颗粒粒径分选系数降低。
With the increasing of soil loss, the sorting coefficient for soil particle diameter of a layer decrease in different types of land utilization.
坡度对于阻力系数影响较小，且阻力系数在小于0.5时对于泥沙流失和溴离子流失影响较大。
The slope had less effect on resistance coefficient. There was more effect on the soil erosion and Br - when resistance coefficient is less than 0.5.
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