一、制约沿海生产活动的因素人类生产活动和世界人口分布日益受到海洋的吸引看来是一个长期趋势,许多沿海国家都有这个倾向。生产活动和人口分布受海洋吸引的程度取决于不同时期海洋所起的不同作用。海洋运输和海洋资源有了商业性质之后,在世界沿海形成了商业活动地带;随着商业的发展,在沿海又出现了像造船、修船、渔业加工和殖民地的原料加工这些直接与 I. Factors that constrain coastal production activities Human production activities and the increasing distribution of the world’s population by the oceans appear to be a long-term trend that many coastal States have tendencies. The extent to which production activities and population distribution are attracted to the oceans depends on the different roles of the oceans in different periods. With the commercial nature of marine transport and marine resources, commercial activity has been established along the coasts of the world; with the development of commerce, direct and indirect processing of raw materials such as shipbuilding, ship repairing, fishery processing and colonies has emerged along the coast