常熟沿江湿地物种资源现状与保护措施  

Wetland species resources and their protection along the Yangtze River in Changshu,Jiangsu Province of East China

作　　者：田苗苗[1] 钟飞[1] 屈磊飞 王俊农 赵言文[1] 

机构地区：[1]南京农业大学资源与环境科学学院,南京210095 [2]常熟市沿江堤闸管理所,江苏常熟215511

出　　处：《生态学杂志》2011年第10期2306-2314,共9页Chinese Journal of Ecology

基　　金：江苏省水利科技重点项目(CS2007039)资助

摘　　要：为弄清常熟沿江湿地的资源现状,提供湿地保护依据,采用野外采样和室内分析方法,从区域大尺度及生境小尺度获得湿地动植物物种科属组成、分布特征和物种生物量等信息;并对物种间的相关性和浮游生物与水质间的相关性进行了分析。结果表明:观测区植被以芦苇(Phragmites australis)、菰(Zizania latifolia)、藨草(Scirpus planiculmis)为优势种;直链藻(Melosira italica)和铜锈微囊藻(Microcystis aeruginosa)是浮游植物中的优势种;浮游生物和底栖动物多样性较低,渔业资源相对丰富;植被、浮游生物多样性指数与底栖动物栖息密度相关性显著,而长江汛期水质与浮游生物之间没有显著相关。在湿地面积逐渐减少、生物资源日益匮乏的现状下,应从恢复湿地面积、加强动态监测和建立科学开发模式3个方面保护沿江湿地。In order to make clear the present situation of wetland species resources along the Yangtze River in Changshu and to provide references for wetland protection,an investigation was conducted at habitat and regional scales to obtain the information about the wetland plant and animal species composition,distribution characteristics,and biomass in the observation areas.The correlations between the wetland species and between the plankton and water quality were also analyzed.In the observation areas,Phragmites australis,Zizania latifolia,and Scirpus planiculmis were the dominant plant species,whereas Melosira italica and Microcystis aeruginosa were the dominant phytoplankton species.The diversity of plankton and zoobenthos was lower,while the fishery resources were relatively abundant.There were significant correlations between the wetland plant,plankton and zoobenthos,but no significant correlation was observed between plankton and water quality during the flood season of the Yangtze River.Due to the gradual reduction of the wetland area and of the biological resources,it would become important to restore the wetland area,set up dynamic monitoring system,and build scientific development model to protect the wetland along the Yangtze River.

关 键 词：沿江湿地 群落分布 多样性 保护 

分 类 号：X37[环境科学与工程—环境工程]