摘要
以野外样方调查数据为基础,调查了太子河干流河岸带植物物种的组成、种类和外貌,应用重要值计算了太子河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,分析了其物种的多样性差异,从而为太子河河岸带的生态修复提供理论和技术依据。结果表明:太子河干流河岸带23个植物样方中,共有36科124属201种,群落物种组成较为丰富,但仅限于草本植物;物种组成以菊科、禾本科、蓼科、莎草科、蔷薇科植物为主,植物种类以灯心草、菵草、狭叶水蓼、野稗、看麦娘、水蓼、酸模、丝叶蒿、薹草、中华结缕草、散穗早熟禾、东方藨草等为主;太子河干流河岸带植物物种结构简单,物种组成较少;植物物种多样性水平较低,从多样性指数的数量特征来看,Patrick丰富度指数的变化范围为3.00—28.00,Pielou均匀度指数的变化范围为0.66—0.89,Simpson多样性指数的变化范围为0.54—0.91,Shannon-Wiener多样性指数的变化范围为0.86—2.73,Simpson优势度指数的变化范围为0.09—0.46。太子河干流河岸带受到的人为活动干扰,如农业生产、挖沙等,降低了物种多样性水平。
The species diversity is an important trait of plant ecological adaptive strategy. The plant community of riparian zone along Taizi River plays an important role in the stabilization of plant composite. However, the species diversity of riparian zone along Taizi River is quite poorly known. The objectives are to investigate the species diversity of the understory of riparian zone along Taizi River in order to provide the theory of ecological restoration and technical basis. The diversity of plant species in 23 plots of the zone is investigated by calculating the indices of species diversity, richness, evenness, and dominance from important values. The results indicate that there are 201 species of plants belonging to 36 families and 124 genera in the 23 plots of riparian zone along Taizi River. The species composition of the community is relatively rich, but all are confined to herbaceous plant. The main families are dominated by the Compositae, Gramineae, Polygonaceae, Cyperaceae, and Rosaceae. The compositions of the community are concentrated, and the plant species give first place to Juncus effusus L., Beckmannia syzigachne （Steud.） Fern., Polygonum hydropiper L. angustifolium A. Br., Echinochloa crusgalli （L.） Beauv., Alopecurus oequalis Sobol., Polygonum hydropiper L., Rumex aceto^a L., Artemisia adamsii Bess., Carex dispdata Boott ex A. Gray, Zoysia sinica Hance, Poa subfastigiata Trin., Scirpus orientalis Ohwi, etc. The community structure of
出处
《科技导报》
CAS
CSCD
北大核心
2011年第23期23-28,共6页
Science & Technology Review
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项目(HJ200905)
辽宁省教育厅项目(2008255)
关键词
太子河
河岸带
植物群落
物种多样性
Taizi River
riparian zone
plant community
species diversity
