汉江支流南河鱼类资源现状及其生态保护研究

2012年8月和10月分别对南河上游河段（五道峡自然保护区）和中下游河段（南河自然保护区）的鱼类资源进行了调查,调查显示：上游河段有鱼类4目10科34属40种,中下游河段有鱼类4目9科33属38种,且均以鲤形目为主.优势种是、银鲴、彩副鱊,并具有较多湖北省级保护鱼类.南河鱼类生态类型多样,以定居性,肉食性鱼类为主.调查表明,南河水系发达,污染少,是鱼类资源丰富的主要原因.加强对南河水系及水生生物的保护具有深远意义.

Fish resources of the Nanhe River,a tributary of the Hanjiang River and suggestions to their conservation

We conducted fish survey in the upper reaches（Wudaoxia Natural Reserve）of the Nanhe River in August 2012,and in the middle and lower reaches（Nanhe Natural Reserve）in October 2012.The results shew that there were 40 species of fishes in the upper reaches and 38 species in the middle and lower reaches,which belong to 4orders,10 families,34genera and 4orders,9families,33 genera respectively.Both of these reaches were dominated by cypriniforms and the dominant species were Hemiculter leucisculus,Xenocypris argentea and Paracheilogna-thus imberbis.The ecotypes of fish in Nanhe River were various and dominated by non-migration and carnivorous species.Moreover,there were many protected species.The survey suggested that high diversity of habitats and high water quality were the main reasons for causing abundant fish resources.It＇s very important to strengthen the protection to Nanhe River system and fish resources.