While the value of DOP in the three sections indicates the amounts of oxygen in the environments, respectively of Cihua, Laibing, and Liuyang.

• DOP值的变化趋势为：浏阳＞来宾＞慈化，表明华南地区3个剖面的沉积环境含氧量的关系为：浏阳＜来宾＜慈化。