分析了南沙群岛及其邻近海区的海洋沉积环境与沉积物特征,认为其沉积特征与三大地貌单元及其热带海洋环境密切相关. The marine sedimentary environment and sediment characteristics of the Nansha Islands and its adjacent sea areas are analyzed. It is concluded that the sedimentary characteristics are closely related to the three major geomorphological units and their tropical marine environment.