世界海洋是人类食品的重要来源.近三十年来,约90%以上的水产品捕自大陆架及其邻近海区.从1955年开始,每年世界渔获量平均增长250万吨,主要是增大大陆架海区的捕捞强度所致.近几年的调查证明,世界许多海区传统捕捞对象的捕捞过度已导致这些鱼类的资源量下降,例如,大西洋鳕、鲱、鲈鲉、鲽及其他鱼类.学者们认为,现有 The world’s oceans are an important source of human food, with more than 90 per cent of aquatic products captured over the continental shelf and adjacent sea areas for nearly three decades, starting from 1955 on average, increasing world catches by 2.5 million tonnes per year, mainly by increasing the continental shelf Sea areas, and surveys in recent years have demonstrated that overfishing by traditional fishes in many parts of the world has led to a decline in the resources of these fishes, such as cod, herring, seabream, pomfret and other fish. We think that existing