摘要
大九湖湿地是汉江一级支流堵河的源头,是南水北调中线工程的重要水源涵养地之一。1986年以来大规模开挖人工沟渠、疏通落水孔、排干沼泽等活动导致大九湖湿地生态功能退化和湖泊消失。在2005年开始实施"大九湖湿地保护与恢复及公园建设工程"至今,为了解湿地恢复工程中引种放养的鱼类现状,2014年11月通过刺网和电捕的方式在大九湖湿地开展了鱼类种类特征的野外调查,结果表明:大九湖湿地共采集到2目2科9种鱼,其中鲤形目鲤科有8种,鲈形目塘鳢科1种;鲫数量过半,生物量占近30%;鲢生物量最大,占46.29%,数量占2.11%;鱼类相对重要性指数分析结果显示鲫是优势种,其他种类均为稀有种。
The Dajiuhu wetland is the source of the Du River,a first-grade tributary of the Han River,and the wetland alsoserves as the important water conservation of the middle routes of South-to-North Water Diversion Project.Since1986,thehuman activities such as ditches digging,holes dredging and bog draining have led to severe degradation of ecological functionof the Dajiuhu wetland and the disappearance of lakes.After the implementation of‘the Dajiuhu Wetland Protection andEcological Restoration Project’,we conducted a field survey on the community and abundance of fish by gillnetting and electricin November2014to reveal the status quo of fish community post the restoration project.A total of9species belonging to2orders and2families were observed,among which,Cyprinidae with8species and Eleotridae with1species.Crucian carp(Carassius auratus)occupied more than half of the total abundance and almost30%of the total biomass;silver carp(Hypophthalmichthys molitrix)occupied the largest proportion(46.29%)of the total biomass,but only2.11%of the totalabundance.According to the index of relative importance,crucian carp was dominant species while other fishes were allrelatively rare species.Our results indicated that the introduced populations of cyprinid fish during the restoration project hadsuccessfully established in Dajiuhu wetland and became dominant while the native fish species remained rare.
作者
李俊
刘梅群
高健
赵以军
LI jun;LIU meiqun;GAO Jian;ZHAO Yijun(Key Laboratory of Ecological Remediation of Lakes and Rivers and Algal Utilization of Hubei Province, College of Civil and Environmental Engineering, Hubei University of Technology, Wuhan 430068, China;Hydrology and Water Resources Survey Bureau of Shiyan, Shiyan 442000, China)
出处
《生态科学》
CSCD
2017年第1期159-164,共6页
Ecological Science
基金
国家自然科学基金(31500378)
湖北省科技支撑计划项目(2015BCH329)
湖北省水利重点科研项目(2014SW1202)
高层次人才科研启动金(337301)
湖北省水利2017年重点科研项目(HBSLKY201719)
河湖生态修复与藻类利用湖北省重点实验室2015年开放基金(HHKF201506)
关键词
大九湖湿地
鱼类种类
鱼类引种
Dajiuhu wetland
fish species composition
fish introduction
