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对长江中游防护林体系灌沟集水区内的栓皮栎林、板栗林、灌木丛和坡地农田等４种植被类型的水土流失进行了研究．结果表明，４种植被类型土壤的总孔隙度变化范围为 ４０．９６％～４８．２０％，渗透速度变化为 ７．４４～１０．５８ｍｍ·ｍｉｎ~(－１)；地表径流、土壤以及Ｋ，Ｎ，Ｐ的流失量均为坡地农田＞栓皮栎林＞灌木丛＞板栗林．
The soil and water loss of four types of vegetation, including Quercus variabilis forest, chestnut forest, shrub and slopeland farmland in the gully catchment of the middle reaches of Yangtze River, was studied. The results showed that the total porosity of four soils varied from 40.96% to 48.20% and the infiltration velocity varied from 7.44 to 10.58 mm · min -1. The surface runoff, soil and K , N and P losses were farmland on slope> Quercus variabilis forest> shrub> chestnut forest.