I believe everyone has seen the news. Qingdao, Shandong Province suffered the largest attack by Enteromorpha prolifera. What impact has it had on marine ecology? High-density and large-area floating Enteromorpha blocks the sea light, reduces the photosynthesis of phytoplankton, changes the initial production process and material and energy flow of the ocean, and affects the structure and function of the marine ecosystem. The beautiful Enteromorpha sank to the bottom of the sea, and the organic matter and toxic substances produced by decay polluted the seabed environment. If Enteromorpha prolifera runs out of seawater nutrition and the whole marine ecosystem almost collapses, we will bid farewell to the blue sea, blue sky and seafood prawns completely.

I. Marine problems caused by Enteromorpha prolifera

In recent years, due to the influence of human beings on the environment, the global climate temperature has risen and the marine ecology has been destroyed, resulting in serious eutrophication of water bodies, thus providing a good living environment for Enteromorpha. However, Enteromorpha prolifera has a strong ability to survive and reproduce, and can absorb nutrients in seawater well. The photosynthesis of Enteromorpha prolifera should not be underestimated. They have strong photosynthetic capacity, and the reproduction of Enteromorpha prolifera is diversified. As long as the ocean temperature, salt and light are suitable, Enteromorpha can grow and reproduce rapidly. The proliferation of Enteromorpha prolifera will bring serious marine ecological problems. In order to meet its own survival, Enteromorpha needs to consume a large number of breeding sites in the marine ecosystem, thus affecting the reproduction of other marine life. It will also lead to serious organic pollution of seawater. Marine pollution is definitely one of the reasons for the flooding of Enteromorpha prolifera, but it is getting worse every year, indicating that the area of submarine vegetation is shrinking.

Second, how to reduce the Enteromorpha disaster?

To reduce the occurrence of Enteromorpha disaster, engineering dredging can be adopted, that is, introducing fresh water, such as Yangtze River water, and using a large amount of water to flush cyanobacteria and smelly lake water into the sea. The characteristic is that it can control cyanobacteria in a large area, but the disadvantage is that it is not fundamentally controlled, and the pollution is transferred to other places, which is not suitable for large-scale promotion. The scientific treatment measures are: make up your mind and take strong measures to cut off industrial and domestic sewage, farmland nitrogen and phosphorus and other pollution sources and let the water flow. After the pollution source is interrupted, natural selection should be respected, ecological self-repair should be carried out, and only necessary artificial control measures should be supplemented.