吴昊, 蔡东章, 高靓文, 任雨轩, 饶本强. 信阳市入侵植物空心莲子草群落数量分类及功能群研究[J]. 信阳师范学院学报(自然科学版), 2020, 33(2): 250-257. DOI: 10.3969/j.issn.1003-0972.2020.02.012
引用本文: 吴昊, 蔡东章, 高靓文, 任雨轩, 饶本强. 信阳市入侵植物空心莲子草群落数量分类及功能群研究[J]. 信阳师范学院学报(自然科学版), 2020, 33(2): 250-257. DOI: 10.3969/j.issn.1003-0972.2020.02.012
WU Hao, CAI Dongzhang, GAO Jingwen, REN Yuxuan, RAO Benqiang. Quantitative Classification and Functional Groups of Alien Plant Alternanthera Philoxeroides Invaded Community in Xinyang City[J]. Journal of Xinyang Normal University (Natural Science Edition), 2020, 33(2): 250-257. DOI: 10.3969/j.issn.1003-0972.2020.02.012
Citation: WU Hao, CAI Dongzhang, GAO Jingwen, REN Yuxuan, RAO Benqiang. Quantitative Classification and Functional Groups of Alien Plant Alternanthera Philoxeroides Invaded Community in Xinyang City[J]. Journal of Xinyang Normal University (Natural Science Edition), 2020, 33(2): 250-257. DOI: 10.3969/j.issn.1003-0972.2020.02.012

信阳市入侵植物空心莲子草群落数量分类及功能群研究

Quantitative Classification and Functional Groups of Alien Plant Alternanthera Philoxeroides Invaded Community in Xinyang City

  • 摘要: 在信阳市空心莲子草(Alternanthera philoxeroides)广泛入侵的区域设置20个样地进行群落学调查,利用TWINSPAN分类和DCA排序等数量生态学技术划分其群丛类型及功能群结构,并探讨功能群多样性与空心莲子草入侵态势的关系.结果表明:20个样地群落可划分为3组群丛类型.分别为:空心莲子草+马唐群丛、空心莲子草+稻稗群丛和空心莲子草+麦冬+婆婆纳群丛.群落中的78种植物可划分为3组功能群,分别为:禾本科功能群、菊科功能群和其他类杂草功能群.随着群落中伴生植物总属数和总种数的上升,空心莲子草入侵重要值显著下降.随着禾本科和菊科功能群物种数目的上升,群落的4个α物种多样性指数显著上升,且禾本科功能群对于多样性的提升作用高于菊科功能群.

     

    Abstract: 20 plots were set in Alternanthera philoxeroides invaded regions in Xinyang city, using quantitative ecological techniques such as TWINSPAN classification and DCA sequencing to classify the association types and functional groups, as well as explore the relationships between functional groups diversity and A. philoxeroides invasion situation. The results showed that 20 plot communities were divided into 3 groups cluster type, A. philoxeroides+ Digitaria sanguinalis, A. philoxeroides + Echinochloa crusgalli and A. philoxeroides + Ophiopogon japonicas + Veronica polita. 78 plant species were divided into 3 functional groups, Gramineae group, Asteraceae group and other weeds group. Importance value of A. philoxeroides decreased significantly as total amounts of genera and species of accompanying plants increasing. With gramineae and compositae function group of this rise,4 alpha species diversity indices of invaded community increased as species richness of Gramineae group and Asteraceae group increasing, and the positive effect of Gramineae group on species diversity was higher than that of Asteraceae group.

     

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