期刊论文

Analysis of the difference and correlation between the spatial structure and understory herbaceous species diversity of typical subtropical forests

中文

草业科学

1001-0629

2019

36

10

2466-2475

10.11829/j.issn.1001-0629.2018-0728

湖南省自然科学基金面上项目(2018JJ2673) 林学重点学科开放基金项目(2016ZD06) 多功能森林经营湖南金洞林场样板基地作业法研究及示范(1692017-6) 中南林业科技大学***项目(2016YJ075).

本校为第一机构

林分空间结构对林下草本物种多样性有显著的影响。为明确其影响林下草本物种多样性的主导因子,以亚热带杉木纯林、杉木混交林和天然次生林为研究对象,在量化分析3种林分的空间结构指数和林下草本物种多样性指数差异特征的基础上,采用灰色关联度分析林分空间结构和林下草本物种多样性的关系。结果表明:1)天然次生林的树种隔离程度、林层多样性、竞争态势和林木空间分布格局整体上最优,杉木混交林次之,杉木纯林最差。2)天然次生林、杉木混交林和杉木纯林的林下草本物种丰富度、Simpson多样性指数、Shannon-Wiener多样性指数、Simpson均匀性指数和Pielou均匀度5个指数都表现出天然次生林>杉木混交林...

The spatial structure of a forest has a remarkable effect on the diversity of the understory herbaceous species. To clarify the dominant factors that affect the species diversity of understory herbaceous vegetation, a subtropical pure Chinese fir plantation, mixed Chinese fir plantation, and natural secondary forest were used. On the basis of the quantitative analysis of three kinds of stand spatial structure index and understory herbaceous species diversity index of different characteristics, the main spatial structure factors influencing the understory herbaceous species diversity were excav...