长沙市绿地植物群落结构特征与优化构建

Community Structure Characteristic and Optimal Structuring of Green Land Plants in Changsha City

对长沙市典型植物群落进行取样调查,分析群落类型、群落密度、冠幅等对群落景观的影响,结果表明,长沙市的绿地植物群落类型以落叶阔叶林为主,常绿阔叶林次之;部分群落结构简单,植物群落种植密度过高;群落物种中外来植物的比例较大,但绿地植物与植物区系特征基本一致.提出了优化绿地植物群落结构、构建高物种多样性植物群落的措施.

The typical plant community was surveyed by samples in Changsha, and the impacts of the type, density and crown on community landscape were analyzed one by one. The results indicated that community types in Changsha were firstly composed of deciduous broad-leaved forest and evergreen broad -leaved forest secondarily. The structure of partial communities was characterized by simplicity and high density. However, exotic plants took up dominant proportion of the species composition; but green land plants were basically identical with flora features. Correspondingly, the measures for optimizing community structure, structuring high species diversity of plant communities were put forward.