【摘要】 以赣江源国家级自然保护区洋地林场的残次林、针阔混交林和阔叶林为研究对象，采用空间序列代替时间序列的方法，研究不同植被恢复期植物多样性和林分结构特征。结果表明：不同植被恢复期植物物种由多到少依次为阔叶林(38种)、针阔混交林(28种)、残次林(23种);随着植被恢复的进行，乔木和灌木植物物种不断升高，草本植物物种先升高后降低；不同植被恢复期，乔木、灌木、草本的重要值、α多样性和相似性存在明显差异；群落演替促进了乔木和灌木植物的生长，抑制了草本植物的生长。研究结果可为植物多样性的保护、中亚热带人工林生态系统的稳定提供参考。更多还原

【Abstract】 Taking the residual forest, coniferous and broad mixed forest and broad-leaved forest in Yangdi Forest of Ganjiangyuan National Nature Reserve as the research object, the method of spatial sequence instead of time series was used to explore the plant diversity and stand structure characteristics of different vegetation recovery periods, so as to provide a theoretical basis for the vegetation restoration in subtropical areas.The results show that the plant species in different vegetation storation periods were broad-leaved forest(38 species),coniferous and broad-leaved mixed forest(28 species),and residual forest(23 species).With the progress of vegetation restoration, the species of trees and shrubs increased, and the species of herbaceous plants increased first and then decreased.There were significant differences in the importance value, α diversity and similarity of trees, shrubs and herbs in different vegetation restoration stages.Community succession promoted the growth of trees and shrubs, and inhibited the growth of herbs.This study provides a reference for the protection of plant diversity and the stability of subtropical plantation ecosystems.更多还原