摘要
为研究金沙江上游干流巴塘水电站建设后,支流巴楚河鱼类栖息地保护区功能的发挥情况,在2021年开展了巴塘坝下干流及支流巴楚河鱼类资源监测,采用多样性指数和多元统计方法分析了该区域鱼类群落结构特征。在金沙江干流及支流巴楚河共收集鱼类11种,包括长江上游特有鱼类5种,外来物种3种。干支流优势种差异显著,干流优势种为裂腹鱼属(Schizothorax)鱼类,支流优势种为软刺裸裂尻鱼(Schizopygopsis malacanthus)和细尾高原鳅(Triplophysa stenura)两种小型鱼类。在43.53%的Bray-Curtis相似性水平上可以将干支流9个采样点的鱼类群落结构分成2组,对分组进行SIPMER分析的结果表明造成差异的主要原因与干支流优势种差异有关。生物多样性指数的分析结果显示,位于巴楚河汇口附近的两个采样点生物多样性指数最高,可能与汇口处生境较为复杂有关。建议加强对汇口处生境的保护,同时恢复汇口往上河段的连通性,将延长裂腹鱼属鱼类的洄游河段,利于扩大其种群规模。
In order to study the function of the fish habitat conservation area of the tributary Bachu River after the construction of Batang hydropower station in the upper reaches of Jinsha River,the monitoring of fish resources in the main stream below Batang dam and the tributary Bachu River was carried out in 2021,and the fish species composition and community structure were analyzed by using diversity index and multivariate statistical methods.A total of 11 fish species were collected in the main stream and tributary,including 4 endemic species and 3 alien species in the upper reaches of the Yangtze River.The dominant species in the main stream are Schizothorax,and the dominant species in the tributary are two small-sized fishes,Schizopygopsis malacanthus and Triplophysa stenura.Fish community of nine sampling locations were partitioned into two groups at the 43.53%Bray Curtis similarity level.We attributed the difference between these two groups to the different dominant species in the main river and the tributary Bachu river according to SIPMER analysis.The biodiversity index of the two sampling locations near the confluence of Bachu river were the highest,which may be related to the complexity of the habitat at the confluence.It is suggested to strengthen the protection of the habitat at the confluence.At the same time,restoring the connectivity of the upper reach of the confluence of Bachu river may prolong the migratory distance of Schizothorax,which is conducive to expand its population scale.
作者
熊美华
邵科
董微微
陈浩
曾昌
阙延福
陈锋
朱滨
XIONG Mei-hua;SHAO Ke;DONG Wei-wei;CHEN Hao;ZENG Chang;QUE Yan-fu;CHEN Feng;ZHU Bin(Institute of Hydroecology,Ministry of Water Resources and Chinese Academy of Sciences,Key Laboratory of Ecological Impacts of Hydraulic-Projects and Restoration of Aquatic Ecosystem,Ministry of Water Resources,Hubei Engineering Research Center of Hydroecology Protection and Restoration,Wuhan 430079,China;Power China Northwest Engineering Corporation Limited,Xi’an 710065,China)
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2022年第11期2481-2488,共8页
Resources and Environment in the Yangtze Basin
基金
金沙江巴塘水电站鱼类行为生态学及栖息地保护修复调查研究(2021KF1CS3675742)
农业财政专项(CJDC-2017-03)
三峡工程影响水域重要水生生物遗传资源保护(12620200600020J005)。
关键词
金沙江上游
巴塘水电站
巴楚河
鱼类群落结构
upper reaches of Jinsha River
Batang Hydropower Station
Bachu River
fish community structure
