According to estimate, only 15% of the BSi produced in the surface sea accumulates in the sediment with the remainder returning to the water column as a result of dissolution.

• 24士O，37 mmolsi/mZ/d。 表层海水中硅藻细胞吸收溶解态硅转化成颗粒态生物硅的量绝大部分在沉降过程中溶解重新进入了海洋，最终在沉积物中埋藏的量只占了表层海水中生物硅净产量的15%25左右。