论文部分内容阅读
本实验共使用三个海上围隔实验生态系统,模拟海上溢油事故,测定了渤海原油对黄渤海浮游植物群落结构的影响.实验结果表明,在1和2毫米厚度溢油的影响下,浮游植物群落的优势种类发生了很大变化,即小型硅藻和鞭毛藻代替了大型硅藻。同时,浮游植物群落的种类多样性和总细胞数也受到一定的影响,其影响程度随溢油量的增多而增大。由于降解作用,水中油含量随时间而逐渐减少,在溢油入海后的第8天,水中油消失,第12天浮游植物群落结构也大体恢复正常。
In this experiment, three marine enclosing experimental ecosystems were used to simulate the oil spill accidents at sea, and the effects of Bohai crude oil on the phytoplankton community structure in the Yellow Sea and the Bohai Sea were measured.The experimental results show that under the influence of 1 and 2 mm thick oil spills, The dominant species of plant communities have undergone great changes, namely, small diatoms and dinoflagellates instead of large diatoms. At the same time, species diversity and total cell number of phytoplankton community are also affected to a certain extent, and their influence degree increases with the increase of oil spill amount. As a result of degradation, the oil content in the water gradually decreased over time. On the 8th day after the oil spilled into the sea, the oil in the water disappeared and the phytoplankton community structure generally returned to normal on the 12th day.