Community assembly during secondary forest succession in a Chinese subtropical forest
Community assembly during secondary forest succession in a Chinese subtropical forest
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中国亚热带森林次生林演替过程中的群落聚集
DOI：
10.1890/09-2172.1
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发表时间：
2011-02-01
影响因子：
6.1
通讯作者：
Schmid, Bernhard
中科院分区：
文献类型：
--
作者：
Bruelheide, Helge;Boehnke, Martin;Schmid, Bernhard
中国东南部亚热带阔叶林为木本植物提供了丰富的多样性。采用5个演替阶段（20、40、60、80和80年）30330 m样地（n=27）的对比研究设计，研究了物种组成的梯度如何反映群落聚集的潜在过程。特别是，我们测试了成树和灌木的物种丰富度是减少还是增加，并评估了这种模式在多大程度上是由负密度依赖或持续迁移引起的。在演替过程中，珍稀物种是否越来越丰富，成树和灌木的物种组成是否与幼苗的物种组成越来越相似。我们对每个样地所有成虫种和灌木的个体数进行了统计，并对所有幼苗的木本生长量进行了统计
Subtropical broad-leaved forests in southeastern China support a high diversity of woody plants. Using a comparative study design with 30330 m plots (n=27) from five successional stages (, 20,,40,,60,,80, and >= 80 yr), we investigated how the gradient in species composition reflects underlying processes of community assembly. In particular, we tested whether species richness of adult trees and shrubs decreased or increased and assessed to which degree this pattern was caused by negative density dependence or continuous immigration over time. Furthermore, we tested whether rare species were increasingly enriched and the species composition of adult trees and shrubs became more similar to species composition of seedlings during the course of succession. We counted the individuals of all adult species and shrubs >1 m in height in each plot and counted all woody recruits (bank of all seedlings