欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志 ›› 2009, Vol. 28 ›› Issue (09): 1808-1812.

• 研究报告 • 上一篇    下一篇

开垦小叶章湿地植物物种多样性的自然恢复

王雪宏1,2;吕宪国1**;暴晓1,2;武海涛1,2;郭岳1,2   

  1. 1中国科学院东北地理与农业生态研究所湿地生态与环境重点实验室|长春 130012;2中国科学院研究生院|北京 100039
  • 出版日期:2009-09-10 发布日期:2009-09-10

Natural restoration of plant species diversity on reclaimed Calamagrostis angustifolia wetland.

WANG Xue-hong1,2;L Xian-guo1;BAO Xiao1,2|WU Hai-tao1,2;GUO Yue1,2   

  1. 1Key Laboratory of Wetland Ecology and Environmental Science, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China|2Graduate University of Chinese Academy of Sciences, Beijing 100039, China
  • Online:2009-09-10 Published:2009-09-10

摘要: 以开垦小叶章湿地的恢复植被为对象,研究了不同自然恢复年限(5、8和12年)湿地植被的植物群落结构及物种多样性变化规律。结果表明:经过一定年限的自然恢复,植被已经较初期发生了明显的群落演替;植物种类逐渐增加,优势种由旱生植物宽叶山蒿逐渐演变为湿生植物小叶章,样地之间的物种组成存在明显差异;随着恢复年限的增加,植物群落
的多样性指数ShannonWiener (H)值和优势度指数Simpson(D)值变化较为复杂,H值逐渐降低,D值则是先降低,后升高;对于同以小叶章为优势种的2个样地而言,恢复年限为8年的湿地H值要高于恢复年限为12年的湿地;经过不同时间的恢复,恢复年限为5年和8年湿地植物群落的相似度系数为50%,恢复年限为5年和12年湿地植物群落的相似度系数为43%,说明3个恢复湿地植物群落的组成之间存在一定的内在联系,随着恢复年限的增加,其相似性缓慢下降。

关键词: 赖草, 营养繁殖世代, 分蘖株, 根茎, 芽, 构件, 年龄结构, 无性系生长

Abstract: With the vegetations on reclaimed Calamagrostis angustifolia wetland as test objects, this paper studied the change patterns of their community structure and species diversity after different years (5, 8 and 12 years) of natural restoration. After definite years’ restoration, the vegetations had a visible community succession. Plant species increased gradually, dominant species changed from Artemisia stolonifera to C. angustifolia, and species composition differed evidently with restoration year. With the increase of restoration year,  the ShannonWiener index (H) was decreasing, while Simpson index (D) increased after an initial decrease. As for the two plots both with C. angustifolia as the dominant species, the plot with 8-year restoration had a higher H value than that with 12-year restoration. After different years’ restoration, the similarity index of the plant community between the wetlands with 5-year and 8-year restoration was 50%, and that between the wetlands with 5-year and 12-year restoration was 43%, suggesting that there was a definite inherent relationship between plant community composition and restoration year, i.e., the longer the restoration year, the lower the plant community composition similarity.

Key words: Leymus secalimus, Vegetative reproduction generation, Tiller, Rhizome, Bud, Module, Age structure, Clone growth