There is a semi-enclosed sea in the western Part of the Pacific Ocean, which connects China's Liaoning Province, Shandong Province, Jiangsu Province and the Korean Peninsula, and is an important sea area of China, which is the "Yellow Sea". Recently, NASA in the United States published a set of satellite maps of the Yellow Sea online. From the picture, it is shown that china's Yellow Sea is slowly turning green, and a large number of green stripes are slowly covering the entire Yellow Sea, turning the original blue Yellow Sea into a "green sea", and even threatening human beings.
In fact, as early as a few years ago, part of the Yellow Sea in China has already appeared in this green tide, and the area of these seas that has turned green is more than 5 square kilometers. An important reason for the formation of seawater to become green is caused by the explosive growth of the large green algae "Hu Moss" that appears in this sea area, so what is these large green algae "Hu Moss"?
It is one of the most common algae plants in China, which is generally distributed in liaoning province, shandong province, jiangsu province and fujian coastal area. From March to April of each year, these "mosses" will slowly grow endlessly in the seas along the coast. It is a monolayer of cells that can reproduce asexually or sexually, and its reproduction rate is very fast, and it only takes a few days to cover tens of thousands of square meters of sea surface.
For the marine environment, these mosses have formed a disaster, which can not only seize the oxygen in the water, so that the oxygen in the water becomes less, but also let some fish passing through here die due to lack of oxygen. This also shows that the emergence of so much moss in the Yellow Sea is a problem that needs human attention, otherwise it will break the conventional marine ecosystem, and seriously it will directly threaten the living environment of human beings.
In fact, the ocean is constantly swallowed up by these mosses, so that the sea surface slowly becomes a green sea, this phenomenon will occur in all parts of the world, so now China's Yellow Sea is not an uncommon thing. However, the phenomenon of algae swallowing up the sea surface in China this year is much more exaggerated than in previous years, and the scale has reached the highest peak in history, covering an area of 222 square kilometers and a distribution area of 18,600 square kilometers. Since so many "margin mosses" have appeared in the Yellow Sea, will it have a great impact on the environment in which human beings live?
The "margin moss" of the Yellow Sea is not only very much, but the taste it emits is also particularly "sour", some of the moss that does not have enough nutrients to survive will directly die in the water and then rot, and these rotten moss will emit a sour taste. It is said that the life of the residents near the Yellow Sea is miserable, and they can smell this sour smell 24 hours a day, this smell is extremely permeable, even if the doors and windows are closed, they cannot resist it. That is, these mosses have created a danger to the living environment of human beings, so how to clean it up?
In order to clean up the algae on the sea surface, China has launched a secondary emergency response in the Yellow Sea, organized a number of professional emergency disposal teams in advance, used a total of 12 excavators and 9 bulldozers, formed a salvage fleet of 232 vessels, and arranged interception nets above the key sea areas for the salvage of "Hu Moss". In just one week, salvage vessels salvaged more than 7,000 times day and night, salvaging a total of 240,000 tons of moss.
However, after so many days of salvage, there is still a large area of "green grassland" on the sea surface, and the salvaged moss has accumulated more than 2,000 tons, and the current clean-up of the moss is 1600 tons, and now the salvage team is still continuing to salvage, so that it can be monitored at all times and removed in time, and try to reduce the impact of the moss on the lives of the surrounding people. So how did these algae multiply in such a short period of time?
The reason why the moss can reproduce so quickly is mainly because of nutritional problems. General algae basically grow by absorbing nitrogen and phosphorus in the water, and then releasing oxygen through photosynthesis. And now most of these nutrient sources in the water are from the sewage discharged by the factory, why do you say so?
If you have time, you can go out for a walk and look at the drainage channels, and there is usually a lot of moss on the surface of the rocks on the side, which is also a kind of algae. These places you pass through will generally have a lot of nitrogen and phosphorus, this kind of place is too suitable for algae growth, coupled with the right water temperature in the summer, will directly provide these algae with a very suitable environment, coupled with the speed of water flow is very slow, algae is not easy to be washed away by water, and finally will lead to algae will grow here. Since algae only grow in sewage areas, why are there so many algae on the seashore?
Earlier we mentioned the improper sewage treatment, some factories will secretly discharge some untreated sewage into the sea, which will lead to some areas of the sea to be polluted, resulting in more and more nitrogen and phosphorus of water. After nitrogen and phosphorus exceed certain limits, the area is deprived of oxygen. And the algae is originally from the sea, but also very fond of eating these nitrogen and phosphorus plants, coupled with the summer of this suitable temperature, will appear directly on the coast of a large number of algae, as long as the algae encounter nutrients will grow rapidly.
It was once the overlord of the ocean, and it is still the hegemon of the ocean, because algae are the most competitive among the creatures in the sea. So if the fish in the sea accidentally come to the sea of algae, these fish will die of lack of oxygen due to dense seaweed. As long as the fish dies, the fish carcass will decompose nitrogen and phosphorus, which will add nutrients to the seaweed, and then it will continue to circulate. The wastewater discharged by the factory and the dead fish finally created the Yellow Sea gradually becoming a "green sea".
If human beings want to fundamentally inhibit the growth of hu moss, or need to control the proportion of nitrogen and phosphorus in the water, they must be well treated, and those processing plants that secretly discharge sewage can only prevent the continued growth of hu moss. Otherwise, the cost of artificially collecting and salvaging these mosses alone is very huge, and the speed of salvage cannot catch up with the growth rate of moss.
As early as 2008, scientists organized a large-scale cleanup of the moss, but because the investment was very large, it finally stopped. After that, the relevant departments have studied these mosses into ashes, and then used as fertilizer seems to be quite good, I believe that in the future, the problem of moss will eventually be turned into fertilizer to solve. I don't know what you want to say after watching the video?