摘要
本文根据长江中下游资源、生态现状,提出了增殖放流应优先考虑生态保护、自然增殖、种质质量等具体原则。针对不同物种的生态需求,对一些通过放流可望获得一定种群数量的物种,如鲢、鳙、鲴、鲌、蟹类等展开了讨论分析。依据当前长江增殖放流的实效,本文指出在标准化放流方案制定中,应考虑到放流对象的食物链特征、生态阈值及其对生态稳定性的影响,并提出因地制宜地建立不同流域的增殖放流标准方案乃是当前增殖放流工作中较为紧迫的任务。
According to the actuality of the resources, environments and scarce resources in the middle and lower reaches of Yangtze River, Several priority principles were put forward about ecological protection, natural breeding and germplasm quality for the species enhancement and restoration. Some species which were expected to gained large numbers such as silver carp, bighead carp, xenocypris, culter, crab were discussed separately by their different ecological needs. Another principle based on the actual releasing effect in Yangtze River was brought forward to standardization of releasing, which was taking into account the characteristics of the food chain, the ecological threshold value and its impact on ecological of different watershed release program adapted to the stability. To set up the standard enhancement local condition is more urgent in the current enhancement and releasing job.
出处
《中国渔业经济》
北大核心
2009年第3期45-52,共8页
Chinese Fisheries Economics
基金
国家科技基础条件平台项目-长江中下游水产种质资源标准化整理
整合与共享(2006DKA30470_003)
中央级基本科研业务费专项基金(2007JBFA05
2007JBFB06
2007JBFB07)项目的联合资助
关键词
长江中下游
增殖放流
生态适应性
Yangtze River
resource enhancement
ecological suitability
