摘要
以野外样方调查数据为基础,详细调查了太子河北支河岸带植物群落的组成,种类和外貌,应用重要值计算了太子河北支河岸带植物丰富度指数、多样性指数、均匀度指数、优势度指数,并分析了其物种的多样性差异,从而为太子河北支河岸带的生态修复提供理论和技术依据。结果表明:太子河北支河岸带植物群落18个样方中共有18科60属91种,物种组成以菊科、禾本科、莎草科、蔷薇科、蓼科植物为主,植物种类以中华结缕草、珍珠梅、水蒿、金盏银盘、龙蒿、狗尾草、湿薹草、水蓼等为主。太子河北支河岸带植物群落结构简单,物种组成较少。群落物种多样性水平较低,从多样性指数的数量特征来看,丰富度指数4.00～17.00,Pielou均匀度指数0.66～0.86,Simpson多样性指数0.61～0.85,Shannon-Wiener多样性指数1.12～2.24,Simpson优势度指数0.15～0.39。太子河北支河岸带受到人为活动干扰,如农业生产、挖沙等人为活动干扰降低了群落多样性水平。
The species diversity is an important trait of plant ecological adaptive strategy. The plant community of riparian zone along north branch of Taizi River plays an important role in stabilizing plant composite. However, the species diversity of riparian zone along north branch of Taizi River is poorly known. Our objectives are to investigate the species diversity of the understory of riparian zone along north branch of Taizi River to provide theory of ecological restoration and technical basis. The diversity of plant species in 18 plots in this ar- ea was investigated by calculating the indices of species diversity, richness, evenness and dominance from im- portant values. The results indicated that： There are 91 species of plants belonging to 18 families and 60 gene- ra in the 18 plots of riparian zone along north branch of Taizi River. The main families are dominant in the Compositae, Gramineae, Cyperaceae, Rosaceae, Polygonaceae; the compositions of the community are con- centrated ,and Zoysia sinica Hance,Sorbaria （ Ser. ） A. Br. ,Artemisia selengensis Turcz. ex Bess., Bidens biternata （Lour.） Merr et Scheff, Artemisia dracunculus L. , Setaria viridis （L.） Beauv. , Carex humida Y. L. Chang et Y. L. Yang, Polygonum hydropiper L. et al. The community structure of riparian zone along north branch of Taizi River is simple in studied area. The ecosystem is deteriorating, with richness indexes change between 4.00 - 17.00, Pielou indexes change between 0.66 - 0.86, Simpson indexes change between 0.61 - 0.85, Shannon-wiener indexes change between 1.12 - 2.24, Simpson dominance indexes change between 0.15 -0.39. The riparian zone along north branch of Taizi River are disturbance by human activities, such as agricultural production, dredging and other human activities on reducing the level of community diversity.
出处
《辽宁农业科学》
2011年第5期1-6,共6页
Liaoning Agricultural Sciences
基金
国家水体污染控制与治理科技重大专项和流域水生态功能分区与质量目标管理技术基金项目(2008ZX07526-001-02-03)
辽宁省高校污染控制与环境修复重点实验室面上基金(HJ200905)
辽宁省教育厅项目(2008255)
关键词
太子河北支
河岸带
植物群落
物种多样性
North branch of Taizi River
Riparian zone
Plant community
Species diversity
