Effects of selective logging on inter- and intra-specific interactions of trees in a natural Pinus kesiya forest

Q3 Environmental Science 植物生态学报 Pub Date : 2014-01-01 DOI:10.3724/SP.J.1258.2014.00124

Jia Cheng-Xin-Zhuo, Li Shuai-feng, Su Jian-rong, and Su Lei

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引用次数: 1

Abstract

摘要通过分析不同择伐强度下思茅松(Pinus kesiya)天然林乔木种群的生态位、种间联结、种内与种间竞争和群落稳定性, 探讨干扰强度对思茅松天然林乔木种群种间与种内关系的影响。结果表明: (1)择伐干扰改变了大多数乔木树种在群落中的优势地位, 思茅松优势地位未受影响, 随着择伐干扰强度的增加, 思茅松在群落中的生态位宽度逐渐变大, 在重度干扰的群落中与红木荷(Schima wallichii)一起成为生态幅度最大的树种。(2)通过种间联结与生态位重叠分析发现, 随着干扰强度的加剧, 乔木种群的种间关系发生变化, 中度干扰群落中物种之间的生态位重叠明显高于未干扰和重度干扰群落, 而在三类群落中, 思茅松与其他种群之间的重叠值较小。随着干扰强度增加, 种群间正联结与负联结的种对所占的比例逐渐增加。(3) Hegyi竞争指数表明, 三类群落中思茅松种群的竞争压力主要来自种间, 而干扰强度进一步增加了思茅松种群的种间竞争强度, 其种内平均竞争指数随着对象木胸径的增加而减少。(4)林窗是思茅松种群种间和种内关系变化的主要原因, 三类群落都处于较不稳定的阶段, 但中度干扰群落的物种丰富度与稳定性都高于未干扰和重度干扰的群落。择伐原则依据森林管理的目的而确定,

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选择性采伐对天然克夏松林树种间和种内相互作用的影响

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来源期刊

植物生态学报 Agricultural and Biological Sciences-Plant Science

CiteScore

2.50

自引率

0.00%

发文量

4229

期刊介绍： Chinese Journal of Plant Ecology, founded in 1955, is the first academic journal in the field of ecology in China. It is organised by the Chinese Academy of Sciences and co-organised by the Institute of Botany, Chinese Academy of Sciences and the Botanical Society of China. The journal mainly publishes original papers on physiological ecology, plant population ecology, community ecology, ecosystem ecology, landscape ecology, chemical ecology, pollution ecology, restoration ecology, conservation ecology, agroecology, forest ecology, grassland ecology and theoretical ecology. The journal focuses on academic controversy and discussion of controversial issues in the development of the discipline, and is committed to promoting the development of the discipline based on the domestic and international aspects, exerting its scientific, authoritative and guiding influence in the field of ecology in China, and maintaining its international influence.