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林地土壤渗透系数和土壤非毛管孔隙度、容重呈线性相关,土壤物理性状中影响土壤渗透性的主要是非毛管孔隙;乔木林比灌木林更能提高深层土壤的渗透系数;造林整地大大降低表层土壤的渗透,易产生地表径流。水土保持林的营造应建立人工(乔木)—天然(灌丛)复合植被。
The soil permeability coefficient of woodland was linearly correlated with the soil non-capillary porosity and bulk density. The soil physical properties affecting the soil permeability were mainly non-capillary pores. The arbor forest could improve the permeability coefficient of deep soil more than the shrub forest. The infiltration, easy to produce surface runoff. Soil and water conservation forests should be established artificial (tree) - natural (shrub) composite vegetation.