人类赖以生存的地球,其陆地面积仅约占总面积的1/3。虽然陆地上的矿产资源丰富,但经过人类的长期开采,资源的储存量已一天天减少。矿产资源的成矿时间是以百万年、千万年,甚至以亿年来计算。但资源的消耗却非常迅速。在世界人口压力下,资源危机日趋严峻。海洋必将成为21世纪资源的主要来源。 The earth on which mankind depends for its existence only accounts for about one third of the total land area. Although there are abundant mineral resources on land, after long-term human exploitation, the stock of resources has been decreasing day by day. The mineralization time of mineralization is millions of years, tens of millions of years, even in millions of years. However, the consumption of resources is very rapid. Under the pressure of the world’s population, the resource crisis is worsening. The sea will surely become the main source of resources for the 21st century.