The Yangtze River has been closed to fishing for ten years, and it has only been flooded for two years. Is it necessary to continue fishing now?

The Yangtze River has been an inland river in China since ancient times, which has nurtured tens of millions of people in the Yangtze River basin, and people in the Yangtze River basin also depend on fishing for a living.

Because there was no convenient transportation and fishing equipment was not so advanced in ancient times, even large-scale fishing did not destroy the ecological balance of the Yangtze River basin.

However, due to the development of modern science and technology, various fishing facilities and methods emerge one after another, and killing fish in the Yangtze River basin destroys the local ecological balance, resulting in a sharp decrease in fish species and quantity.

In order to protect the ecological balance of the Yangtze River basin and let the endangered fish recuperate, the state closed the Yangtze River for several months, but after the closed fishing period, all the fish were preyed.

Therefore, the state issued the Yangtze River 10 year fishing ban this time, arresting more than 654.38+10,000 ships.

First of all, only two years of fishing ban have achieved initial results.

It is not without reason that fishing has been banned for ten years. It takes about three years for the fish species in the Yangtze River to grow, and the 10-year fishing ban just provides the fish with the growth time to breed for two or more generations.

There are more than 400 species of fish in the Yangtze River, among which there are many characteristic fish. It will take a long time to make up for the sharp decline in the number of fish in the Yangtze River caused by overfishing. A ten-year fishing ban is a favorable way to enrich fish resources.

2020 is the third year of the Yangtze River fishing ban, and the effect is gradually emerging.

Since the beginning of April, there have been many rains in the Yangtze River basin. Huge rainfall and frequent rainfall have enriched the water flow of the Yangtze River, especially the tributaries in the middle and lower reaches of the Yangtze River, and there has even been a trend of rising water.

The flood season also provided a better water environment for fish in the Yangtze River basin, and the number and species of fish increased significantly.

Hanjiang River is one of the main streams of the Yangtze River, and it is also an important place for the growth and reproduction of various fish schools.

Compared with the past, the number of small fish hatched in the Han River has increased significantly this year. A large number of small fish are active in shallow waters, which are complementary to the river water, and the fish density is quite high.

Under the action of flood season, a large part of potholes and river banks have become shoals, which are full of all kinds of fish, and the species and quantity are far more than before.

The fishermen around were also very surprised by this phenomenon, saying that they had never seen so many fish in shallow water before.

This further reflects the effect of the fishing ban. The growth environment of fish in the Yangtze River basin is good, and the number and species of fish have slowed down.

Compared with these, finless porpoises are not uncommon in the middle and lower reaches of the Yangtze River, and their unique way of existence has attracted many experts to study.

Since 20 18, the Ministry of Agriculture has made preliminary statistics on the species and quantity of Yangtze finless porpoises, and found that the number of Yangtze finless porpoises has dropped sharply, only about 1000.

The finless porpoise is a unique mammal with special requirements for water quality and food demand. The species and quantity of fish in water can promote the growth and reproduction of finless porpoises, and the high frequency of finless porpoises indirectly reflects the relaxation of fish growth in the Yangtze River.

Two, the Yangtze River fish flooding, should continue to protect.

The national 10 closed fishing season plan has just been implemented for two years, and the recovery speed of fish in the Yangtze River basin is amazing.

Fish that were once endangered have now formed a population.

Even saury, which had been fried to sky-high prices, was found in a river basin inspection.

Moreover, the ban on fishing in the Yangtze River is not only to restore the number of fish, but to keep the ecosystem of the Yangtze River basin in a balanced state.

Although the number of fish in the Yangtze River basin has been greatly restored, what we see at present is only those fish with strong reproductive ability, which cannot prove that the local ecosystem has been completely restored.

However, the plan to ban fishing in the Yangtze River is to restore a complete ecosystem, rather than simply raising fish like a fish pond.

After the fishing ban, some fish grow very fast, but this is only the appearance, and they can reproduce more quickly.

They can quickly seize the resources in the river and breed quickly.

However, those carnivorous fish at the top of the food chain are generally weak in reproductive ability, and it is difficult for them to return to their previous level even during the fishing ban period of 10.

Summary:

Judging from the above facts, it is very necessary for the state to implement the 10 fishing ban plan.

Although it took only two years to achieve initial results, the number of fish with strong resilience increased greatly, giving people a phenomenon of fish flooding.

But in fact, the ecosystem of the Yangtze River basin has not recovered its balance, which will lead to the result of fish flooding.

Those fish with strong resilience will flood only when there are no natural enemies or few natural enemies, that is to say, when large carnivorous fish return to normal state, flooding can be suppressed.

Therefore, the 10 plan is essential, and only by continuing to implement it can the ecosystem of the Yangtze River basin become stable.