Coral reefs of Nansha Islands in southern South China Sea have the character of zonation due to the zonation of hydrodynamics, sediments and topography.

• 在南沙群岛珊瑚礁体上,水动力作用和沉积类型、地形地貌都具有成带分布的特点,因而岩体结构和工程地质性质亦具有分带性。