林地被人为开垦破坏后，加速侵蚀是导致坡面土壤养分流失的根本原因。

Man made accelerated erosion is a key reason for soil nutrient loss after forestlands were disturbed by human being.

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林地被开垦破坏后，坡面土壤元素的空间分布受人为犁耕活动、侵蚀沉积搬运过程和元素性质的影响。

After forestland being reclaimed, spatial distributions of soil elements would be affected by plowing, erosion-deposition-transportation, and soil element properties.

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从坡面水动力学角度研究了坡面乔木林、草本植物和林地枯落物对坡面径流流速和动能的影响机理。

From the view of hydrodynamics, this paper studied the acting mechanism of tree, grass and forest litter on slope runoff velocity and kinetic energy.

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