In 2022, many areas on the mainland have seen the results of the fishing ban on the Yangtze River, letting us know that the Yangtze River is really only protected, and may see the expansion of scarce species.
No, the Yangtze River Network released a message in June 2022 that when Xiaogan City scientists were collecting data in the suburban Fuhe area, there were major discoveries, and the mysterious species of the Yangtze River reappeared.
This is really a happy thing, why? Because this is recorded in the area north of the Yangtze River , the first time in nearly 10 years , and the first discovery in Xiaogan City in recent years.
Therefore, the effectiveness of yangtze river protection is really becoming more and more obvious, and we will take a step-by-step look at how the ecosystem of the yangtze river basin on the mainland is.
Yangtze
The Yangtze River is one of the main rivers on the mainland, and is the longest river in Asia and the largest river in the world in terms of hydropower. Spanning 11 provincial-level administrative regions on the mainland, the entire river originates on the roof of the world, in the Qinghai-Tibet Plateau, and finally flows into the East China Sea from the east of Chongming Island.
According to the data on the tributaries of the Yangtze River released by the China Water Conservancy Network, there are 437 tributaries with an area of more than 1,000 square kilometers in the entire Yangtze River Basin, 49 with an area of more than 10,000 square kilometers, and 8 with an area of more than 80,000 square kilometers.
The basin area of the four tributaries of the Yalong River, the Min River, the Jialing River and the Han River all exceed 100,000 square kilometers, which is the basic water energy situation. So the Yangtze River is connected to thousands of large and small tributaries.
Under such a large river, it will inevitably promote the stable development of continental ecosystems. Therefore, in the rivers and in the areas around the rivers, the number of biological populations is very large.
According to incomplete statistics, there are 2 species of freshwater cetaceans, more than 1,200 species (genera) of more than 400 species of fish, 753 species (genera) of zooplankton, 1,008 species (genus) of benthic animals, and more than 1,000 species of aquatic higher plants in the Yangtze River Basin.
Wild animals, including the mainland's key protected species, such as the white sturgeon, the Chinese sturgeon, the Dashi sturgeon, the white sturgeon, and the Yangtze River finless porpoise, are distributed in the Yangtze River.
Therefore, the yangtze river on the mainland is an area with a very rich biological population. No, we said that Xiaogan City has made new discoveries, this is the first time in recent years that rare fish endemic to the Yangtze River Basin have been discovered, what is it?
The yangtze river has found a mysterious species of helio, and the area north of it is also the first time in 10 years
Of course, we said that since 2022, there have been many incidents on the Yangtze River about "protection effectiveness". For example:
In May 2022, the lower reaches of the Gezhouba river of the Yichang Yangtze River photographed the newborn porpoise playing with their family group this year (2022), which is the third consecutive year that the newborn porpoise activity has been photographed. This shows that after the ban on fishing in the Yangtze River, the population of this organism expanded, and the signs of activity became frequent.
In 2022, under the Huangxiang Gate of the Huangxiang Bridge in Chizhou City, Anhui Province, the scene of fish churning reflects the effectiveness of protection. From the published picture, we can also see that there are too many fish in the water, resulting in the river being "blackened".
In 2022, a large number of fish will appear in the waters of the Wanzhou section of the Yangtze River, and the number of clouds will be large. Through the video surveillance footage of the fishery administration, the water and grass on both sides of the Mixi Ditch are dense, and the naked eye can see the flocks of fish, which range from about 10 to 30 centimeters in length.
These examples illustrate that the ecosystem of the Yangtze River has become better. Let's take a look at the mysterious species of helios found in the Yangtze River, what species it is, and why it is so mysterious.
What species is it and why is it so mysterious? Taxonomically belonging to the order Cyprinidae, it belongs to the predators of the Yangtze River, located at higher levels of the food chain, and feeds mainly on fish and aquatic invertebrates.
And this creature can be said to be widely distributed in the mainland Yangtze River, the middle and lower reaches of the Yangtze River and the rivers and lakes south of the Yangtze River can be easily seen, and in the process of its migration, we are also very easy to see large-scale populations.
However, I did not expect that humans would find its great use, that is, "eating". Therefore, in the second half of the 20th century, it became a natural economic fish species in the Yangtze River Basin.
Under the large-scale fishing, it is eaten directly to a state of extinction. The body of this fish is approximately tubular and slender, with a small, straight, beardless head, and a gray-black tail fin. Many regions also call it Diao Zi, Wheat Straw Diao, Chang Diao, Diao Guan and so on.
Its meat is really good, tender and delicious, so it is quite popular. However, the growth rate of this fish is very slow, the common one is only 0.5-1 kg, although the largest individual can reach more than 10 kg, but it can not be seen at all.
Therefore, factors such as overfishing, water conservancy project construction and other changes in the hydrological environment caused by human activities in the past have led to a large-scale reduction in the number of helimps in the wild, which is basically invisible at the end of the 20th century, and many production areas have no record of this species for decades, and may even be regionally extinct in some areas.
No, after the protection of the Yangtze River, we saw the emergence of this creature.
In 2021, 1 crab was found in the monitoring of aquatic biological resources in the Yangtze River estuary section, and this time Xiaogan City scientists, collected in the suburban Fuhe area, is also the only 1 unique rare fish heli fish, so it is quite rare, is its mystery, because it is too difficult to find. This time, the discovery is not large, the tailed hemorrock is 33 cm long.
According to Wang Xinyue, the discoverer of the helix and the natural science popularization instructor, in the past two years, there have been sporadic reports of heli fish discoveries in other areas of the Yangtze River Basin, but the record in the area north of the Yangtze River in the past decade is also the first time in the past decade. After its discovery, it has now been preserved and made into a scientific specimen, which is the general situation.
summary
The discovery of the mysterious species of helio in the Yangtze River again, which is enough to show that the protection of the Yangtze River has been obviously presented, although the time is not long, but the number of biological populations is indeed growing, whether it is four large fish, or the carp and the rare number of fish such as the heel, have appeared.
The ten-year ban on fishing in the Yangtze River has achieved remarkable results. Therefore, in the future, we will continue to increase the protection of the Yangtze River ecosystem, which will inevitably bring us greater results.
Of course, many people have seen the emergence of scarce species, and they are also saying, is it possible that the species in the Yangtze River ecosystem will "flood"? In fact, there is no need to worry, the Yangtze River, as a complete ecosystem, can automatically make perfect adjustments, and there is no need for human intervention at all. Therefore, the situation of "flooding" is simply not possible, which is not our concern.