< h1 class= "pgc-h-center-line" > the Yangtze River</h1>
As the "longest river in Asia", the Yangtze River has always been rich in species, and the indigenous people of the Yangtze River Basin have relied on the Yangtze River for thousands of years. According to incomplete statistics, there are more than 4,300 kinds of aquatic organisms in the Yangtze River Basin, of which there are more than 400 kinds of fish and more than 180 kinds of endemic fish. The Yangtze River Basin was once rich in fish resources, with the highest peak accounting for 60% of the country's total freshwater fishing at that time.
At the beginning of 2020, the bad news of the extinction of the Yangtze River white sturgeon came, which meant that the children of the "post-20s" would never see the king of China's freshwater fish with a size of up to 7 meters and a weight of more than 1,000 kilograms.
In fact, since 2016, a three-year survey of fishery resources and environment in the Yangtze River has found that of the more than 430 species of fish known in the Yangtze River, 140 species of fish cannot be collected and have disappeared.
Human activities are the main cause of ecological degradation in the Yangtze River Basin. In recent years, aquatic organisms in the Yangtze River Basin have listed 92 endangered fish species in the Red Book of Endangered Animals of China, and nearly 300 species have been listed in the Appendix to the Convention on International Trade in Endangered Wild Fauna and Flora.
<h1 class = "pgc-h-center-line" > decade off fishing</h1>
The most important and direct cause of the decline of aquatic biological resources in the Yangtze River Basin is the overfishing of cool fishing. In order to obtain fishing benefits, some fishermen abuse illegal operation methods such as electric fish, poisonous fish, fried fish, and "nets of extinction", not only catching big fish, but also small fry, resulting in a vicious circle of "less and less resources, worse and worse the ecology, and poorer fishermen catch".
In order to protect the ecology of the Yangtze River Basin, from 2020, 332 aquatic biological reserves in the Yangtze River Basin will completely ban productive fishing; at the latest, from 00:00 on January 1, 2021, the scope of fishing ban will be extended to all natural waters of the main stream and important tributaries of the Yangtze River.
Why ten years? It is because the sexual maturity age of the main fish such as the four major fish in the Yangtze River Basin is 3 to 4 years old, and after 2-3 generations of reproduction, it is possible to effectively delay or even reverse the trend of sharp decline in aquatic biological resources in the Yangtze River.
<h1 class = "pgc-h-center-line" > the tip of the tongue gourmet heli fish reproduction</h1>
On June 5, staff from the Freshwater Fisheries Research Center of the Chinese Academy of Fishery Sciences monitored wild puffer fish fry in the Haimen section of the Yangtze River.
In August, the porpoise group known as the "Yangtze River giant panda" reappeared in Wuhan. Videos of multiple finless porpoises playing and jumping on the river have gone viral. Experts from the Institute of Aquatic Sciences of the Chinese Academy of Sciences said that the finless porpoise is a barometer of the ecological health of the Yangtze River, and the fish biological resources of the Yangtze River are gradually recovering, which is greatly related to the ban on fishing in the Yangtze River.
As the fishing ban continues, good news is coming out as the first anniversary approaches.
In November 2020, scientific expedition personnel from the Yangtze River Fisheries Research Institute of the Chinese Academy of Fishery Sciences found a helio in the Yichang section of the Yangtze River, and more than three years have passed since the last Yangtze River expedition found a helio in the Honghu section.
Heels, the same as our common carp, are of the genus Helio, commonly known as Diao Zi, Diao Stalk, Chang Diao and Diao Rod. This is a kind of fish that likes to eat live animals, grows slower but is larger, generally can grow to more than ten pounds, looks like an eel, but has a mild temperament, and has the habit of migrating in the rivers and lakes. Because of its delicious meat, heli fish was once one of the important economic fish in the Yangtze River Basin. In the famous food program "China on the Tip of the Tongue 3", there is a delicacy called Shi Xian Tao steamed heli fish used this fish.
Once it comes to food, Chinese foodies never show mercy. Ugly-looking bats are not spared, not to mention fish that look good in meat. This fish originally has a relatively long growth cycle, fishermen in pursuit of maximum profits, fry will not let go, so many fish are caught out.
In 2016, netizens fished for hemorring
In recent years, due to overfishing and barriers between rivers and lakes, heli fish have been extinct in many historical distribution points, and have been listed as provincial key protected aquatic wild animals by Hubei, Hunan and other places. Economic fish have been eaten into protected animals in just a few years, and it can be imagined that if one day four large fish are eaten as protected animals, it can be seen how serious the indiscriminate fishing in the Yangtze River has been in recent years.
Some people feel that the fishing ban is too strong, affecting the survival of hundreds of thousands of fishermen, in fact, the Yangtze River has really been embarrassed to the point where there are no fish to catch. The news of the extinction of the white sturgeon has once again pushed the topic of biological conservation in the Yangtze River in a tragic way. In fact, it is not only the white sturgeon, at present, the Yangtze River biological integrity index has reached the worst "fish-free" level, and the Yangtze River ecosystem is on the verge of collapse.
The helio found in this scientific expedition undoubtedly released an excellent signal, which means that the fish ecology facing extinction threat in the Yangtze River Basin is gradually recovering.
The ten-year ban on fishing is a period, and the ecological protection is endless. The ten-year fishing ban has provided an opportunity for many Yangtze River aquatic organisms to restore their populations, but stopping fishing is not enough to get them out of the existential crisis. The ban on fishing is only one part of the ecological restoration. The improvement of the awareness of ecological protection of the whole people and the reduction of the impact of human activities such as construction on the ecology are still the focus of the current content.