拟赤杨次生阔叶林群落特征及物种多样性

Community Characteristics and Species Diversity of Secondary Broad-leaved Forest of Alniphyllum fortunei

[目的]研究拟赤杨次生阔叶林群落特征和物种多样性。[方法]采用典型样地调查法测定分析不同林层植物的丰富度、个体数、多度、频度等因子。[结果]该群落特征是以落叶树种拟赤杨为优势树种的次生阔叶林,林分结构尚不稳定。次生阔叶林物种多样性明显高于杉木纯林。[结论]在现有林地上应该根据地理位置、生态环境、人类活动等因素,划出一定的区域,培育次生阔叶林,以保护亚热带物种多样性。

[Objective]To study the community characteristics and species diversity of secondary broad-leaved forest of Alniphyllum fortunei. [Method]The richness, individual number, abundance and frequency of plants in different forest layers were measured and analyzed by typical plot survey method.[Result]The community was characterized by secondary broad-leaved forest dominated by deciduous species A. fortunei, and its stand structure was unstable.Species diversity of secondary broad-leaved forest was significantly higher than that of pure forest of Cunninghamia lanceolata. [Conclusion]In order to protect the species diversity of subtropical zone, the existing forest land should be divided into certain areas according to geographical location, ecological environment and human activities.