【摘要】 本文对现有闽北天然异龄林的林分结构进行分析和模拟研究，得出了林分内部的树种及林分层次结构、林分直径分布结构、林分蓄积分布结构等规律，并对现有异龄林的合理经营和结构调整提出几点建议。更多还原

【Abstract】 From the analysis and simulated study on the stand structures of present natural uneven-agedforests in North Fujian, this paper obtains the laws of the tree species structure within the stands, stand layerstructure, stand diameter distribution structure and stand stock distribution structure. It also makes sevenalproposals for the rational management and structure adjustment of present uneven-aged forests.更多还原