黄河干流宁蒙段渔业资源调查及保护对策

为了解黄河干流宁蒙段渔业资源现状，于2007年10月对这一河段的饵料生物资源和鱼类资源进行了调查，重点是浮游生物种类组成及数量变化、鱼类区系特点和渔获物组成分析。结果表明：黄河干流宁蒙段浮游生物种类和数量偏少，鱼类资源量呈下降趋势；然后，通过查询相关资料和结合本次调查结果，分析讨论了黄河干流宁蒙段鱼类资源衰退的主要原因，并且为这一河段的鱼类种质资源保护和渔业资源可持续利用提出合理性建议。

A research and protective strategy of the fishery resource in Ningxia-Neimeng(Ning-meng) river reach of Yellow River trunk stream

In order to understanding the status of fishery resource in Ning-meng river reach of Yellow River trunk steam, the food organism resource and fish resource were researched on the river reach, in October 2007, focusing on the change and composition of plankton, the character of fish fauna and the composition of fish catch .The results showed that the plankton appear lesser in species and quantity, the fish resource present the downward trend in the river reach; then the main reasons of fish resource decline were analyzed and discussed by finding out the relevant information and analyzing the results of this survey , as mean well , some reasonable suggestions were proposed for the conservation of fish germplasm resource and the sustainable use of fishery resources in the river reach.