2021 is the opening year of the "Yangtze River fishing ban", and the results achieved are also related to the subsequent fishing ban trend. Indeed, as the largest river in China, the Yangtze River has many tributaries and is also the main distribution area of wild animals and plants in China.
However, before the "Yangtze River ban on fishing", everyone's protection of wild animals and plants can be quite small, resulting in a rapid decline in China's large-scale biological population, and many organisms in the Yangtze River have appeared in a scarcity pattern, and even a situation of biological extinction.
The most typical example is nothing more than the "Chinese endemic species of white sturgeon", which has been completely declared extinct, and the Yangtze River white sturgeon is 150 million years old, one of the ancient fish that survived from the Mesozoic Cretaceous Period. However, under the large-scale capture of the ecological environment and the population of species by humans, it has led to the difficulty of survival of this species. As a result, the legend is that the king of China's freshwater fish, which can be as long as 10,000 kilograms, has disappeared, so it is really a pity.
And because of this, we do not need to implement the "Yangtze River fishing ban", so that we can see more species that are about to become extinct or disappear reappear. Therefore, only when we are well protected can we hope to see many scarce species appear, and we can see the activity of species again in areas that cannot be seen.
This is not, After more than 40 years in China, the reproduction of porpoises in the waters of Yangtze Island in the Ganjiang River is really a good news, which shows that the results achieved in the opening year of the "Yangtze River fishing ban" in 2021 have appeared again, and we will take a look at the situation below.
Finless porpoise is not strange to everyone at all, we are also commonly known as "river pig", black porpoise, narrow ridge porpoise, etc., it also has a special nickname, that is, "smiling angel", indeed the face of the porpoise is always the same as the smile, so it is loved by everyone. The organism was once the named subspecies of the narrow-ridged finless porpoise, but in 2018, it became an independent biological population, the organism is small, the head is blunt and round, the body length is generally about 1.2 meters, the longest can reach 1.9 meters, so it is still not small, the life expectancy is about 20 years, and the artificially farmed finless porpoise may have a slightly longer lifespan.
This organism belongs to the unique biological population of China, and in the global scope, only the Yangtze River region of China has it. However, this organism is also a very scarce species, in 2018, the Ministry of Agriculture released data showing that there are only about 1012 left in China, so it is very scarce, so it is also a first-class protected species in China, and everyone needs to protect the creature well.
Finless porpoises prey on larger groups of species, including blue-scaled fish, jade tendon fish, eels, perch, mackerel, silver fish and other fish and shrimp, squid, etc., so as long as it is slightly protected, its population expansion is much more likely. In 2021, after China implemented the "Yangtze River ban on fishing", it is true that many finless porpoises have appeared, and although the finless porpoises found in the yangtze waters of the Ganjiang River are very rare, its appearance directly reflects that the environment in this area has indeed become better.
According to the report, more than 40 years ago, porpoises were commonly found in the waters from Yangzizhou to Fengcheng in the Ganjiang River, but later, due to the depletion of fish and shrimp resources in the Yangtze River waters and other factors, the Ganjiang River rarely saw porpoises. However, since June 2021, there have gradually been finless porpoises entering the waters, and "getting together" to swim in the waters of Yangzizhou, evoking the good memories of many local residents as children, excited to go back and forth to Yangzizhou almost every day to watch and photograph the porpoise, and enjoy it.
Therefore, after more than 40 years, the reproduction of porpoises in the yangtze lake waters is really a direct result of China's protection of the Yangtze River basin, which is also conducive to the increasing number of porpoises in the Yangtze Lake waters year after year, and expanding the habitat range and extending the activity area, which is a very good news.
Residents living in the area around the Yangtze River, have not implemented Yangtze River fishing, it may really be relatively rare, including the area where the porpoise appeared this time, Yangzizhou Town is surrounded by water on three sides, there are four or five villages that have "relied on water to draft", fishing is their side business for survival. The villages, large and small, have more than 300 years of fishing history. However, in May 2020, after Nanchang City launched the implementation of the "ten-year fishing ban" in the Nanchang section of the Ganjiang River, the number of retired fishermen in the village reached 605.
Therefore, it directly ended more than 300 years of fishing history, and it is because of this that we have seen the situation of the porpoise "settling down". This shows that only protection can make the organisms survive better, and these are mutual.
Indeed, we can see from the changes in the biological population of the Yangtze River, it is difficult to see the emergence of finless porpoises without protection, bluefish, grass carp, silver carp, bighead carp are called "four big fish", in 2018, the four big fish are more than 90% less than in the 80s of the last century, and the fishing output of the main stream of the Yangtze River has been less than 100,000 tons, what does this mean?
The fish involved were gone, and the other creatures didn't eat at all. Therefore, the porpoise has no food, there is no way to survive, it must be reduced, this is the general situation.
The "Ban on Fishing in the Yangtze River" has indeed achieved obvious results, although we have only seen 10 years. However, these 10 years are enough to expand and recover a lot of biological populations. There will definitely be a new round of data evaluation to see if it will be restored, and that's the general situation.
For most people, it is best to continue to "ban fishing" as much as possible, so as to permanently maintain the balance of the environment, and indeed it can be said, but whether it will be done or not, we cannot know.
And finally, once again, a question is explained, that is, every time the finless porpoise appears, many people are asking whether the white dolphin is still there? Indeed, this creature has not been seen in China for a long time, and iUCN also designates it as "extremely dangerous, possibly extinct", so whether there is a temporary lack of knowledge, mainly because it has not been found, if it continues for a long time and has not been found, it may really be defined as a species extinction, and China's Yangtze River Basin will also reduce a creature again, which is a pity.