三江平原小叶章群落近30年的动态变化  

Recent thirty years evolvement trend of Calamagrostis angustifolia community in Sanjiang Plain

作　　者：汲玉河[1] 吕宪国[2] 杨青[2] 赵魁义[2] 

机构地区：[1]辽宁大学生态环境研究所,沈阳110036 [2]中国科学院东北地理与农业生态研究所,长春130012

出　　处：《生态学杂志》2006年第11期1328-1332,共5页Chinese Journal of Ecology

基　　金：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-01);中国科学院知识创新工程重要方向资助项目(KZCX2-302)。

摘　　要：由于生境的改变,三江平原沼泽湿地典型植物群落中小叶章群落内部发生了显著的变化。本文以定点观测和典型湿地植物调查为基础,分析了近30年来小叶章群落的动态变化。结果表明,小叶章群落的物种频度符合Raunkiaer频度定律,即5个频度级的关系都具有A>B>C≥D<E的规律性。小叶章群落的物种构成发生了明显变化,灌木类型植物逐渐增多。植物物种多样性减少。小叶章的多度、分盖度和高度都有降低趋势。With the change of habitat, there was a notable change in the Calamagrostis angustifolia community, a typical plant community in swamp wetland of Sanjiang Plain. Based on the localized observation data and field survey in typical wetland, this paper analyzed the recent thirty years evolvement trend of C. angustifolia community in the Plain. The results showed that the species frequencies of C. angustifolia community accorded with Raunkiaer frequency law, which was in the order of A〉B〉C≥D〈 E. The species in C. angustifolia community altered obviously, among which, shrub plants increased gradually, resulting in a reduced diversity of plant species. The abundance, div-coverage and height of C. angustifolia all presented a descending trend.

关 键 词：三江平原 湿地 物种多样性 湿地植物 小叶章 

分 类 号：Q948[生物学—植物学]