稀有种和常见种对植物群落物种丰富度格局的相对贡献

doi:10.17520/biods.2015239

生物多样性 ›› 2016, Vol. 24 ›› Issue (6): 658-664. DOI: 10.17520/biods.2015239 cstr: 32101.14.biods.2015239

• 研究报告: 植物多样性 • 上一篇下一篇

稀有种和常见种对植物群落物种丰富度格局的相对贡献

王世雄¹, 赵亮^1,,A;^*(), 李娜¹, 郭华², 王孝安², 段仁燕^3,,A;^*()

1 宿州学院生物与食品工程学院, 安徽宿州 234000
2 陕西师范大学生命科学学院, 西安 710119
3.安庆师范大学生命科学学院, 安徽安庆 246011

收稿日期:2015-09-11 接受日期:2016-03-12 出版日期:2016-06-20 发布日期:2016-06-20
通讯作者: 赵亮,段仁燕
基金资助:
国家自然科学基金(31570417)、宿州区域协同创新中心全国开放重点课题(2014SZXTKF03ZD)、宿州学院教授(博士)科研启动基金 (2014jb04)和宿州学院科研平台开发课题(2014YKF17)

The relative contributions of rare and common species to the patterns of species richness in plant communities

Shixiong Wang¹, Liang Zhao^1,^*(), Na Li¹, Hua Guo², Xiaoan Wang², Renyan Duan^3,^*()

1 School of Biological and Food Engineering, Suzhou University, Suzhou, Anhui 234000
2 College of Life Sciences, Shaanxi Normal University, Xi’an 710119
3 School of Life Sciences, Anqing Normal University, Anqing, Anhui 246011

Received:2015-09-11 Accepted:2016-03-12 Online:2016-06-20 Published:2016-06-20
Contact: Zhao Liang,Duan Renyan

摘要/Abstract

摘要：

物种丰富度格局的形成不仅依赖于群落的构建过程, 同样也依赖于群落中的物种组成(如稀有种和常见种)。本文以黄土高原子午岭林区的辽东栎(Quercus wutaishanica)林为研究对象, 根据频度大小对物种进行排序, 形成稀有-常见种和常见-稀有种两条物种序列, 通过逐一添加(去除)物种, 分析引起的总体物种丰富度及其成分(α多样性和β多样性)的变化, 确定稀有种和常见种对物种丰富度格局的相对贡献。结果表明: (1)常见-稀有种序列与群落总体物种丰富度的相关性呈先剧增后平稳的对数增长曲线, 而稀有-常见种序列与群落总体的相关性与前者刚好相反, 呈先平稳后剧增的指数增长曲线; (2) α多样性在常见-稀有种序列中呈明显的对数变化曲线, 而在稀有-常见种序列中呈指数增长曲线; (3)与α多样性变化相反, β多样性在常见-稀有种序列中随物种的进入先迅速降低后逐渐平稳, 而在稀有-常见种序列中先平稳后急剧降低。可以看出, 常见种不仅主导群落的总体物种丰富度格局, 同时也是α多样性和β多样性格局的重要贡献者。因此, 常见种是群落物种丰富度格局的指示者, 也应该是优先保护的物种。

关键词: α多样性, β多样性, 物种频度分布, 黄土高原

Abstract

Understanding how overall patterns of spatial variation in species richness are affected by species distributional is one of the key questions in species diversity research. In the present study, we investigated the relative contributions of common and rare species to overall plant species richness in the Liaodong oak (Quercus wutaishanica) forest, which is located in the Ziwu Mountains of Loess Plateau, northwestern China. Based on species frequency distribution, we developed rank sequences of the most common to the most rare and the most rare to the most common species. We then correlated the rank sequences with cumulative species distributions. Our results showed that common species had a higher correlation with the cumulative species distribution in comparison with rare species. Moreover, common species had stronger effects on species α diversity and species β diversity as compared with rare species. Although the number of rare species was greater than that of common species, the overall species richness pattern was better predicted by common species than rare species. Therefore, common species were confirmed to be good indicators of species richness pattern and need to be protected priority.

Key words: α, diversity, β, diversity, species frequency distribution, Loess Plateau

王世雄, 赵亮, 李娜, 郭华, 王孝安, 段仁燕 (2016) 稀有种和常见种对植物群落物种丰富度格局的相对贡献. 生物多样性, 24, 658-664. DOI: 10.17520/biods.2015239.

Shixiong Wang, Liang Zhao, Na Li, Hua Guo, Xiaoan Wang, Renyan Duan (2016) The relative contributions of rare and common species to the patterns of species richness in plant communities. Biodiversity Science, 24, 658-664. DOI: 10.17520/biods.2015239.

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链接本文: https://www.biodiversity-science.net/CN/10.17520/biods.2015239

https://www.biodiversity-science.net/CN/Y2016/V24/I6/658

图/表 4

图1 子午岭辽东栎群落各层物种频度分布

Fig. 1 Species-frequency diagram for different layers of Quercus wutaishanica forests in the Ziwu Mountains of Loess Plateau

图2 稀有种和常见种对总体物种丰富度格局的贡献。采用频度来定义物种的稀有性和常见性, 按照频度由低到高或者由高到底的序列对物种依次排序, 然后根据序列逐一添加(或去除)物种, 通过比较物种添加(或去除)前后所引起的“新”群落与原群落物种多样性间的相关性大小来度量稀有种和常见种对总体物种丰富度格局的贡献。

Fig. 2 Contribution of rare and common species to overall pattern in species richness. Subsets of species were assembled by ranking species by number of sampling plots occupied, starting with either the most common species or the rarest species. Successively rarer (or more common) species were added one by one to form nested subsets, until all species within a taxon were included in the last subset. Contribution of rare and common species to overall pattern in species richness measure as the sequential correlation between partial and full assemblage species richness patterns.

图3 稀有种和常见种对物种丰富度格局α多样性成分的贡献。采用频度来定义物种的稀有性和常见性, 按照频度由低到高或者由高到底的序列对物种依次排序, 然后根据序列逐一添加(或去除)物种, 通过比较物种添加(或去除)前后所引起的α多样性的大小来度量稀有种和常见种对物种丰富度格局α多样性成分的贡献。

Fig. 3 Contribution of rare and common species to α diversity pattern in species richness. Subsets of species were assembled by ranking species by number of sampling plots occupied, starting with either the most common species or the rarest species. Successively rarer (or more common) species were added one by one to form nested subsets, until all species within a taxon were included in the last subset. Contributions of rare and common species to β diversity as measured by the change of variation in community composition between full and partial assemblage which was induced by the addition or removal of species.

图4 稀有和常见种对物种丰富度格局β多样性成分的贡献。采用频度来定义物种的稀有性和常见性, 按照频度由低到高或者由高到底的序列对物种依次排序, 然后根据序列逐一添加(或去除)物种, 通过比较物种添加(或去除)前后所引起的β多样性的大小来度量稀有种和常见种对物种丰富度格局β多样性成分的贡献。

Fig. 4 Contribution of rare and common species to β diversity pattern in species richness. Subsets of species were assembled by ranking species by number of sampling plots occupied, starting with either the most common species or the rarest species. Successively rarer (or more common) species were added one by one to form nested subsets, until all species within a taxon were included in the last subset. Contributions of rare and common species to β diversity as measured by the change of variation in community composition between full and partial assemblage which was induced by the addition or removal of species.

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稀有种和常见种对植物群落物种丰富度格局的相对贡献

The relative contributions of rare and common species to the patterns of species richness in plant communities

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