What is the reason why the white sturgeon, the king of China s freshwater fish , has been officiall

The king of freshwater fish in China, the white sturgeon.

It was officially declared extinct on July 21, 2022, which means that this sturgeon endemic to the Yangtze River in our country.

will be lost forever in the world. The main cause of the extinction of the white sturgeon is human-caused, and the white sturgeon is not listed as an endangered species.

In the past, overfishing of white sturgeon has led to a significant decline in the white sturgeon population, and the white sturgeon has not been able to recover to a more stable population level through its own regulation. At the same time, human activities have also caused serious harm to the living environment of the white sturgeon, causing serious damage to the space and resources needed for the growth of the white sturgeon.

The extinction of the white sturgeon is a microcosm of many species in the world, and it is also the situation that many species may face in the future. Although species extinction may also be affected by natural causes, such as the earth's living environment has been significantly changed due to the impact of an asteroid, making it unsuitable for the survival of the vast majority of life on earth, and species extinction has occurred, such as the age of dinosaurs.

The passing of the day. But this will generally cause the extinction of many species, not the extinction of a single species. The extinction of a single species is generally due to human-caused causes.

After entering the industrial era, the scientific and technological level of mankind has been greatly improved, but it has been accompanied by the excessive exploitation and utilization of natural resources by human beings. In order to satisfy their own selfish desires, humans will capture other species with ornamental or edible value, and even species with very large populations are difficult to resist this way of capturing humans.

However, with the deepening of ecological research, more and more people are aware of biodiversity.

The importance of the protection of endangered species is more perfect. For example, the establishment of a nature reserve for endangered species, so that the environment is suitable for the survival of endangered species, can slow down the pace of extinction to a certain extent, or even play a hindering role. At the same time, some endangered species can also be treated by artificial breeding methods, and more complete monitoring measures will be established for the treatment of endangered species in the wild.

First, illegal fishing for human beings in the past would catch a large number of Yangtze white sturgeon for economic gain, and at this time the state did not issue a clear prohibition order. Residents around the Yangtze River basin have fished for profit, and this phenomenon is one of the direct causes of the extinction of wild white sturgeon. Second, habitat loss: Dams built in the Yangtze River basin have blocked their migration routes, and unsustainable sand and gravel mining has destroyed their spawning grounds, as well as habitat loss.

I also heard a few days ago that the king of Chinese freshwater fish, the white sturgeon, was officially declared extinct, in fact, there may be many reasons, including human reasons and natural reasons, if you think that it may be too much fishing, hunting and thinking about the sea lovers some garbage to know that they do not believe in using it or caused their death, and another natural reason may be theirs, the lack of food has caused them to starve such a situation.

The habitat has been affected by artificial engineering, which makes it difficult for white sturgeon to survive in the wild, and artificial cultivation is also very difficult.

In the past, many people used to catch a large number of Yangtze white sturgeons in the Yangtze River for their own interests, and there was no fishing ban on the Yangtze River in our country before. As time passed, more and more people around the Yangtze River basin began to hunt for more profits, which is one of the reasons for the extinction of the Yangtze sturgeon. <>

If a species wants to survive better, it must have a very good habitat, and only then can it reproduce better. However, many dams have been built in the Yangtze River basin, and these dams have also blocked the migration route of the Yangtze sturgeon. In addition, human beings have also carried out continuous sand and gravel mining in the Yangtze River basin, which has also destroyed the spawning grounds of the Yangtze white sturgeon, and it is precisely because of these two reasons that the habitat of the Yangtze white sturgeon has been completely lost, and finally slowly went extinct.

Although the water quality of the Yangtze River has gradually improved after the treatment in recent years, the water quality of the Yangtze River is relatively poor due to the impact of urban domestic sewage and industrial wastewater in the past, which also directly affects the survival of the Yangtze white sturgeon. You must know that the requirements for water quality of the Yangtze white sturgeon are very high. <>

In recent years, there have been more and more extreme weather, either the weather will be particularly cold or the weather will be particularly hot, and this has had a very big impact on the survival of the Yangtze white sturgeon. When extreme weather occurs, the water temperature in the Yangtze River will naturally be affected, and it is precisely because of this hot and cold water temperature that it directly leads to the extinction of the Yangtze white sturgeon. <>

In addition to the above reasons, there are actually many reasons, such as the Yangtze River itself is a waterway, so some Yangtze sturgeon were also killed by the propellers of ships.

According to reports, it is mainly due to the influence of human factors. The damming of the Yangtze River blocked the return channel of the white sturgeon, preventing it from returning to its original spawning grounds to reproduce, and they were unable to adapt to the new environment quickly, thus affecting the reproduction of the entire species. At the same time, pollution and overfishing have led to an overall decline in the number of fish in the Yangtze River, and the carnivorous white sturgeon has naturally encountered food shortages.

There are too many people who eat, so it is too late to produce at this time, which has caused such a problem, which is particularly serious.

The destruction of the environment has led to the fact that the white sturgeon has no place to live, and finally has to become extinct.

First, illegal fishing for human beings in the past would catch a large number of Yangtze white sturgeon for economic gain, and at this time the state did not issue a clear prohibition order.

Residents around the Yangtze River basin have fished for profit, and this phenomenon is one of the direct causes of the extinction of wild white sturgeon.

Second, habitat loss: Dams built in the Yangtze River basin have blocked their migration routes, and unsustainable sand and gravel mining has destroyed their spawning grounds, as well as habitat loss.

There is less hope for the resurrection of the Yangtze sturgeon. The reason for the extinction of the white sturgeon is that it is no longer adapted to today's environment.

The white sturgeon, an ancient species that has survived for more than 100 million years, prefers a cooler environment, and has become extinct due to environmental changes caused by human activities and other factors.

"Unfortunate and expected".。There have long been traces of why the Yangtze sturgeon became extinct. In the final analysis, it is the destruction of the environment in which human beings grow!

The Yangtze River is well known to be China's main transportation river and rich in fishery resources; Intensive passenger and cargo transportation, is an indispensable road for inland and coastal ports and major cities; At present, the Yangtze River Economic Belt has been formed in the Yangtze River Basin, which plays a major role in the economic development of cities along the Yangtze River. According to the data released by the Yangtze River Pilotage Center in December 2020 (28), a total of 10,000 piloted ships were piloted in 2020, exceeding 60,000 for four consecutive years; The cargo capacity of pilot ships was 100 million tons, an increase over the same period last year; Among them, the cargo capacity of ships on international routes was 100 million tons, an increase over last year. That is to sayEvery year, the number of ships on the Yangtze River is increasing.

According to statistics at the beginning of 1980, there were more than 40,000 pollution sources in the whole basin, of which 490 industrial and mining enterprises were major pollution sources, and according to statistics, "in 1998, the sewage discharge in the whole basin was 18.9 billion tons, and in 2003 it had risen to more than 27 billion tons; The water quality exceeding the standard rate of the provincial boundary section of the basin also showed an upward trend. Water pollution in the basin, especially in the middle and lower reaches, has not been effectively controlled and controlled."。Although we have started to protect it, it is not the best time for interference. The pollution of the Yangtze River has led to the failure to effectively curb the pollution of the coastal waters of the main stream. The tributaries are seriously polluted, and the water quality of the main stream deteriorates; Lakes are becoming increasingly eutrophicated and aquatic ecosystems are being destroyed; "White pollution" directly affects water resources.

For white sturgeon, the large size of the body makes the number scarce. White sturgeon, which is a large fish like the white sturgeon, is more susceptible to human activities than smaller fish. The construction of power stations and dams in the Yangtze River, where we live, hindered the sturgeon's life, reproduction and exchange.

Species extinction is something that human beings do not want to see, which is a helpless and sad thing. Recently, the International Union for the Conservation of Nature and Animal Conservation officially announced that the Yangtze white sturgeon, known as the "king of freshwater fish in China", has become extinct. This means that it is basically impossible for humans to see the Yangtze sturgeon in the wild in the future.

The Yangtze sturgeon has a very long history of survival, dating back to the last 100 million years. Although it has survived for a long time, the survival ability of the Yangtze white sturgeon is very weak. Because it is a freshwater fish and its living place is very fixed, its reproductive ability is not as good as that of ordinary fish.

As early as 1996, the Yangtze white sturgeon was listed as critically endangered by the International Union for Conservation of Nature, but it has not escaped extinction. <>

The extinction of the Yangtze white sturgeon is inextricably linked to human beings. After the 50s of the last century, China ushered in the era of large-scale development, and after the 80s, the development of the Yangtze River basin was further followed up and expanded. In order to take advantage of the abundant hydropower and water resources in the Yangtze River basin, several dams have been built on the Yangtze River, such as Gezhou Dam.

Although these water conservancy projects can be exchanged for great economic benefits, they also make it impossible for fish to migrate and the Yangtze sturgeon to spawn upstream, resulting in a significant decline in its reproductive rate. In addition, the fishery in the Yangtze River basin is also further developing, many fishermen often carry out bottom-up fishing, crazy fishing, the use of fishing nets are very dense, the Yangtze River white sturgeon is also fished and discarded, its living space security is greatly reduced. <>

In addition, due to the development of seabed aquaculture and fisheries, along with the further development of industry in the Yangtze River basin, the water quality of the Yangtze River is also further declining, and many places have suffered from the pollution of industrial wastewater and domestic wastewater, resulting in the inability of fish to survive at all. The survival of the Yangtze white sturgeon is already low, and after this blow, there are very few Yangtze white sturgeon that can survive. <>

This is also a wake-up call to human beings that they should protect the environment and not wantonly destroy the natural ecology for economic gain. Otherwise, the Yangtze white sturgeon would not be the last species to disappear.

It is because he has not adapted to the ecological environment that he needs a very good environment to survive, but now that nature has been destroyed, how can it survive?

Because its living environment was destroyed, it had no conditions to survive, so it went extinct.

Reproduction is affected, species are unable to reproduce properly, there are fewer and fewer species, and then they become extinct.

As the king of freshwater fish in China, the Yangtze River white sturgeon has survived for a very long time, but now it has been declared extinct, which makes countless people very sad, so is the extinction of the Yangtze River white sturgeon natural extinction or man-made poor protection? In fact, it seems that there should be more reasons for the disadvantage of artificial protection. <>

After all, as the king of freshwater fish in China, the Yangtze River white sturgeon has survived well for hundreds of millions of years, under the development of human beings for rivers and economy, the living space of the Yangtze River white sturgeon has been significantly compressed, we can significantly see that this fish spawns when it is to migrate, but because the construction of hydropower stations has affected the migration of this fish, resulting in a significant reduction in the number of this fish, and there is a very important point, Even though the Yangtze River has been closed to fishing for 10 years, the damaged ecology cannot be repaired in a short period of time. <>

Because of the decrease of fish in the waters of the Yangtze River, the food of the Yangtze River white sturgeon will be reduced, there is not enough food, the number of the Yangtze River white sturgeon will decline significantly, in addition to the reduction of food, the pollution of the water body can not be ignored, because of the development of modern economy, some sewage is directly discharged into the Yangtze River, and passing ships will pollute the Yangtze River, so the habitat of the Yangtze River white sturgeon has been polluted, so the number will also decline. <>

Many people are very sad about the extinction of the Yangtze white sturgeon, which has lived for hundreds of millions of years, but has become extinct because of human reasons, which can not help but be very regrettable, but it also shows that people protect the habitat of environmental protection animals. Only by protecting the habitat of animals can we better protect the natural environment, can we achieve the combination of economic development and environmental protection, and can we truly achieve sustainable development, the natural environment is very important to human beings, and it is urgent to protect the environment.