北京市水库网箱养鱼与水资源保护

分析研究了北京市水资源的特点，针对水库开展的一种新型养殖方式－网箱养鱼对水体的影响方式，分析提出了２种不同的确定网箱养鱼规模的计算模式，并根据水质标准，对北京市主要水库进行了水域功能区划分，利用上述模式计算得出了不同功能水库的网箱养鱼极限面积；同时对于如何减轻网箱养鱼对水体的影响及最佳的养殖方式也作了分析研究，从而为使水库资源的开发利用取得最佳的社会、经济和环境效益提供理论依据。

DEVELOPING CAGE AQUACULTURE AND PROTECTING WATER RESOURCES IN BEIJING RESERVOIRS

Based on analysing the characteristic of water resources in Beijing,two mathematic models are submitted for predicting the scale of cage aquaculture which is a new type of fish culture, and the reservoirs in the Beijing area are classified by functions according to the water quality standards.Then the limiting area of cage aquaculture in reservoirs can be determined by the change dissolved oxygen in the water according to the equation. meanwhile,the way of aquaculture in the reservoir and the impact on the water quality by cage aquaculture are discussed, the results indicate that it is necessary to use the present water resources appropriately and efficiently in order to achieve the best social,economic and environmental benefits.