| 三江平原湿地毛果苔草群落的演替特征 |
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| 引用本文： | 汲玉河,吕宪国,杨青,赵魁义.三江平原湿地毛果苔草群落的演替特征[J].湿地科学,2004,2(2):139-144. |
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| 作者姓名： | 汲玉河 吕宪国 杨青 赵魁义 |
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| 作者单位： | 1. 中国科学院东北地理与农业生态研究所,吉林,长春,130012;中国科学院研究生院,北京,100039
2. 中国科学院东北地理与农业生态研究所,吉林,长春,130012 |
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| 基金项目： | 中国科学院东北地理与农业生态研究所学科前沿领域项目 (KZCX3 -SW -NA -0 1)，中国科学院知识创新工程重要方向性项目 (KZCX2 -3 0 2 )资助 |
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| 摘 要： | 为了说明三江平原湿地植物物种多样性近30年的演替特征，选择三江平原湿地中分布最广泛的毛果苔草群落为研究对象，进行了广泛的野外样方调查。研究发现毛果苔草群落的物种丰富度呈明显减少趋势。毛果苔草的平均高度减少了约为18cm。Drude多度级几乎降低了一个级别。物种构成发生了重大改变，物种重要值≥0．3的一些优势物种的重要性降低，物种重要值≥0．2的物种数目明显减少。群落演替处于快速衰落阶段，退化迹象十分明显。而水量的减少是导致毛果苔草群落快速退化的主要的因素。
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| 关 键 词： | 三江平原 湿地 毛果苔草 植物群落 物种多样性 生态环境 |
| 文章编号： | 1672-5948(2004)-139-06 |
| 修稿时间： | 2004年4月19日 |
The succession character of Carex lasiocarpa Community in the Sanjiang Plain |
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| JI Yu He ,LU Xian Guo ,YANG Qing ,ZHAO Kui Yi.The succession character of Carex lasiocarpa Community in the Sanjiang Plain[J].Wetland Science,2004,2(2):139-144. |
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| Authors: | JI Yu He LU Xian Guo YANG Qing ZHAO Kui Yi |
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| Institution: | JI Yu He 1,2,LU Xian Guo 1,YANG Qing 1,ZHAO Kui Yi 1 |
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| Abstract: | In order to explain the succession character of wetland species diversity in the past thirty years in the Sanjiang Plain, Carex lasiocarpa community,which is most widely distributed,was chosen as study subject. Then sampling surveys was widely carried out in the field. We found that the species richness decreased notably. The average height of Carex lasiocarpa was reduced by 18cm. The Drude grade was also reduced by one grade. Species component was altered greatly. The important degree of dominance species,which important value more than 0.3,was lessened. The species number was reduced. The community succession was on the comedown phase rapidly,and the evidence of degeneration was naked. The shortage of water quantity can be explained to be main reasons causing Carex lasiocarpa community degeneration quickly. |
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| Keywords: | Carex lasiocarpa plant community community succession species diversity wetland the Sanjiang Plain |
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