经过１０４周对２个试验点上包括３种立竹度和２种林分组成共５种处理条件下的毛竹林凋落叶的分解过程研究，结果表明：分解初期失重迅速，而后趋于缓慢。分解剩余率与分解时间之间存在着指数函数关系。林分立竹度和组成对竹林凋落叶分解速度有着显著影响，竹栎混交林及立竹度为３０１５株／ｈｍ２纯竹林处理下，凋落叶的分解速度分别高于纯竹林的其它２种立竹度处理。剩余物中的Ｎ、Ｐ的浓度随分解呈增加趋势，两者变化模式相似，而Ｋ、Ｃａ、Ｍｇ的浓度则趋于减小。处理对Ｎ、Ｋ、Ｍｇ的浓度变化模式无显著影响。分解剩余物中各种养分浓度之间有着一定的关联。Ｎ、Ｐ在凋落叶分解初期为累积阶段，而后才释放归还，Ｋ、Ｃａ、Ｍｇ在整个分解过程中均为释放。分解失重决定着分解后期Ｎ、Ｐ养分的释放归还；而对于Ｋ、Ｃａ来说，淋溶作用是引起它们在分解初期迁移归还的更重要原因 After 104 weeks, the litter decomposition process of Phyllostachys pubescens litter under two treatment conditions including three kinds of standing bamboo and two kinds of stands was studied at two test sites. The results showed that the weight loss was rapid and then tended to be slow. There is an exponential function between decomposition rate and decomposition time. The bamboo stand density and composition had a significant effect on the decomposition rate of litter in the bamboo forest. Under the treatment of 3015 plants / hm2 pure bamboo forest, the decomposition rate of litsea was higher than that of the other two bamboo stands Degree treatment. The concentration of N and P in the residue showed an increasing tendency with the decomposition, both of which had similar changing patterns, while the concentrations of K, Ca and Mg tended to decrease. Treatment had no significant effect on the concentration change patterns of N, K and Mg. Decomposition of various nutrients in the residual concentration has a certain correlation between. N and P were accumulated in the early stage of decomposition of litter before they were released, and K, Ca and Mg were released during the whole decomposition process. Decomposition weight loss determines the release of N and P nutrients in the late decomposition stage. For K and Ca, the leaching action is the more important reason for their migration and return in the early stage of decomposition