【摘要】 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．更多还原

【Abstract】 A study was conducted on the water and soil losses of 4 kind of vegetional forms in the middle reackes of Yangtze River shelter forest.The results showed that,the general hole locking fanged from 40.96% to 48.20% the infiltration speeds of 4 kinds of vegetational soil wing form 7.44 to 10.58 mm·min-1,surface runoff, the losses of soil and K, N, K were compared as follow:farmland > Q. variabilis forest > bushes > C. mollissima forest.更多还原