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沈亚强, 张晓可, 赵伟华, 王海军. 黄河干流河岸带植物群落特征及其影响因子分析[J]. 水生生物学报, 2011, 35(1): 51-66. DOI: 10.3724/SP.J.1035.2011.006591
引用本文: 沈亚强, 张晓可, 赵伟华, 王海军. 黄河干流河岸带植物群落特征及其影响因子分析[J]. 水生生物学报, 2011, 35(1): 51-66. DOI: 10.3724/SP.J.1035.2011.006591
SHEN Ya-Qiang, ZHANG Xiao-Ke, ZHAO Wei-Hua, WANG Hai-Jun. RIPARIAN PLANTS IN THE MAINSTREAM OF THE YELLOW RIVER:ASSEMBLAGE CHARACTERISTICS AND ITS INFLUENCING FACTORS[J]. ACTA HYDROBIOLOGICA SINICA, 2011, 35(1): 51-66. DOI: 10.3724/SP.J.1035.2011.006591
Citation: SHEN Ya-Qiang, ZHANG Xiao-Ke, ZHAO Wei-Hua, WANG Hai-Jun. RIPARIAN PLANTS IN THE MAINSTREAM OF THE YELLOW RIVER:ASSEMBLAGE CHARACTERISTICS AND ITS INFLUENCING FACTORS[J]. ACTA HYDROBIOLOGICA SINICA, 2011, 35(1): 51-66. DOI: 10.3724/SP.J.1035.2011.006591

黄河干流河岸带植物群落特征及其影响因子分析

RIPARIAN PLANTS IN THE MAINSTREAM OF THE YELLOW RIVER:ASSEMBLAGE CHARACTERISTICS AND ITS INFLUENCING FACTORS

  • 摘要: 作为河岸带生态系统的关键组成部分,河岸带植被为许多动植物提供了栖息地以及迁徙或扩散的廊道,并对非点源污染物有着缓冲和过滤作用。黄河是我国湿地的重要组成部分,也是生物多样性分布的关键地带。但是,目前黄河水资源的过度利用如农业灌溉和干流拦河水利工程的兴建在很大程度上改变了原有的水文情势,对河岸带植被发育带来了不利影响。另外,黄河两岸的加固硬化进一步破坏了河岸带植物的生存环境。然而,过去对于黄河河岸带植被仅有对个别河段的调查。为了解目前黄河河岸带植被现状,于2008年4-6月及2008年9-10月对黄河干流河岸带植被进行了两次系统调查,以期为黄河河岸带植被多样性的保护、河岸带的开发管理提供理论支持。对群落的物种组成、多样性进行了分析,并采用双向指示种分析法对黄河干流河岸带植被进行了数量分类。共采集到木本和草本植物169种,隶属于37科124属。区系分析表明黄河干流河岸带植被区系地理成分多样。空间分布方面,中游河段草本植物无论在种类数、密度、生物量上都较上游和下游河段丰富。TWINSPAN将植被划分为17个群落,论述了各群落的特征。环境分析表明,影响黄河干流河岸带植被空间分布的主要生态因子是海拔、年均气温、年均降雨量、年均径流量和平均最大流速。

     

    Abstract: Riparian vegetation,as a key component of riparian ecosystem,offers suitable habitat and migrating or dif-fusing corridor for animals and plants,and has an important function in buffering and filtrating non-point pollution.The Yellow River is an important wetland in China,and also an essential zone supporting biodiversity.However,the devel-opment of riparian vegetation along the Yellow River is threatened by flow regime alteration caused by the overexploi-tation of water resources such as agricultural irrigation and hydraulic engineering construction.Embankment along the lower river is also destroying the habitats of the riparian vegetation.However,previous researches on the riparian vege-tation along the Yellow River focused on only some specific area.To ensure a deep understanding of the present status of the riparian vegetation and provide support for the protection of riparian vegetation diversity and the riparian man-agement of the Yellow River,two systematic surveys were carried out in April to June and September to October,2008,respectively.The species composition and species diversity of riparian plant communities were analyzed.Classifications of the vegetation by two way indicator species analysis(TWINSPAN) were also carried out.Altogether 169 species belonging to 37 families and 124 genera were recorded.Floristic analysis showed that the flora had diverse geographical origins.With regard to the spatial distribution,the herbaceous plants in the middle river sections were more abundant than those in the upper and lower river sections both in biomass and density.TWINSPAN classification divided the vegetation into 17 communities.The characteristics of the communities were described.The correlative analyses indi-cated that altitude,annual mean temperature,annual mean rainfall,annual mean runoff,mean maximum velocity were the main factors influencing the structure and distribution of the assemblages.

     

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