黄河宁蒙段鱼类多样性研究  

Research on Fish Species Diversity in Ningxia-Inner Mongolia Section of Yellow River

作　　者：张星朗[1] 沈红保[1] 李引娣[1] 

机构地区：[1]中国水产科学研究院黄河水产研究所,陕西西安710086

出　　处：《水生态学杂志》2011年第4期58-62,共5页Journal of Hydroecology

基　　金：水利部公益性行业科研专项经费(200901020)

摘　　要：为了解黄河宁蒙段鱼类的生存状况,2008年5～6月和2009年5～6月在吴忠、陶乐和磴口3县13点对该河段的鱼类资源进行了2次调查。结果表明,黄河宁蒙段渔获物以小型黄河鮈(Gobio huanghensis)为主,占到总数量的58.8%,兰州鲇(Silurus lanzhouensis)仅占总数的5.9%;鱼类年龄结构以放流的1、2龄鲤(Cyprinuscarpio)、鲫(Carassius auratus)为主,占到分析样本的51.2%;生物多样性指数表现为:陶乐(0.9856)>吴忠(0.8903)>磴口(0.7432);均匀度指数的空间分布是:吴忠(0.6422)>磴口(0.5361)>陶乐(0.5065);丰富度指数为:陶乐(0.8364)>磴口(0.7357)>吴忠(0.4240)。黄河宁蒙段的鱼类资源量少,以低龄鱼类为主,组成结构不稳定;开展鱼类多样性研究,有利于进一步开发和保护黄河鱼类资源。The living condition and state of the fish species were investigated in Ning-Meng section of Yellow River from May 2008 to May 2009.The results showed that in this section the fish caught was mainly Gobio huanghensis accounted for 58.8%,but Silurus lanzhouensis make up only 5.9%;the age of fish released were mainly 1 and 2 year Cyprinus carpio and Carassius auratus,accounting for 51.2% of the analysis sample;Biological diversity index showed that Taole（0.9856）Wuzhong（0.8903）Dengkou（0.7432）;Evenness index of the spatial distribution of Wuzhong（0.6422）Dengkou（0.5361）Dorothy（0.5065）;Richness index spatial distribution was Taole（0.8364）Dengkou（0.7357）Wuzhong（0.4240）.The results showed a small amount of fish resources in the river,large proportion of very young fish,and unstable composition structure.Research on the fish diversity was conducted to further develop and protect fishery resources of Yellow river.

关 键 词：黄河宁蒙段 优势度 多样性 鱼类 

分 类 号：Q178.1[生物学—水生生物学]