Is it true that the Yangtze River was cut off for 2 hours in 1954? What is the basis?
The most talked-about event of the Yangtze River drying up is actually the Taixing section of the Yangtze River in Jiangsu Province. At about 2 pm on January 13, 1954, "experiencers" witnessed the instantaneous depletion of the water in this section of the river, causing passing shipsForced to run aground, but only two hours later, the river suddenly returned to its former appearance.
However, the Ministry of Water Resources really does not have any hydrological records about the Yangtze River dry-off event. As for the so-called witnesses, many of the grandfathers are also hearsay. As for the "rift valley theory", there is actually no geological information to prove it.Moreover, the Taixing section is located in the lower reaches of the Yangtze River. The depth of the channel here is about 20 meters. In fact, 16 meters are all at a height below sea level. This means that if the upstream is suddenly cut off, the seawater in the downstream will also be inverted.Condition.
In other words, there is no evidence or data to prove that the Taixing section of the Yangtze River was cut off for two hours. As for the longer time, the Yangtze River was cut off. It is even more impossible to verify.It really happened many times before 2000. For example, it was measured at the Lijin Hydrological Station:
From 1972 to 1996, in this short 25 years, there were 19 times of dry-flow in the main river, and the dry-flow time in 1997 was more than 200 days. The reason why there was no dry-flow after 2000The downstream cut-off occurred again because of the construction of the Xiaolangdi Project and its regulation and storage played a role. Therefore, many things have two sides. Although the construction of water conservancy and hydropower projects will have a certain impact on the ecology, if we do not buildWith these projects, how can humans have so much electricity to use, and how can they reduce floods and alleviate drought?
Some people say that the Yellow River is the mother river, and some people say that the Yangtze River is the mother river, but the water volume of the Yangtze River is indeed much richer than that of the Yellow River. This can be seen from the runoff of these two major rivers. The Yangtze River can reach 961.6 billion cubic meters, accounting for more than one-third of my country’s total river runoff, equivalent to about 20 times the total water resources of the Yellow River.
However, the length of the Yellow River of 5,464 kilometers is actually not much shorter than the length of the Yangtze River, which is 6,387 kilometers.At present, the South-to-North Water Diversion Project, which continues to send water to northern cities, actually uses natural water from the Yangtze River system, which means that the Yangtze River water nourishes not only southerners, but also tens of thousands of northerners.
The main stream of the Yangtze River runs from west to east and runs directly through central my country. About one-fifth of the land area is in the Yangtze River Basin. The water of the Yangtze River, which belongs to the Pacific Water System, eventually flows through many places and flows into the East China Sea. Wuhan, Chongqing and Shanghai are all important cities along the Yangtze River, so the development of these cities has a lot to do with this waterway.
Some people wonder why there is so much water in the Yangtze River. Isn’t it the same as the Yellow River and Lancang River that both originated on the Qinghai-Tibet Plateau? This statement is actually inaccurate. There is more than one source of the Yangtze River.North, Xiyuan Tuotuo River north of Tanggula Mountain Town and Beiyuan Chumar River north of Tanggula Mountain Town, which is the main source, in fact, there has been a lot of controversy in the past few decades, until 1008., The researchers discovered that the flow of the Tuotuo River is actually not as large as that of Nanyuan Dangqu. The latter is more than five times that of the former, and the drainage area is more than 10,000 square kilometers.
Indeed, the abundant water resources of the Yangtze River are related to the source, but it is also closely related to the climate of the Yangtze River Basin. The diverse topography gives birth to different climatic conditions. The precipitation in the Yangtze River Basin is much richer than that in the Yellow River Basin. This is why the south enters every year.After the flood season, some tributaries of the Yangtze River are prone to flood disasters, and the purpose of building so many water conservancy and hydropower projects on the Yangtze River is naturally not only for discovery, but also for flood control and drought resistance.
However, with the rapid development of society, human activities have increasingly disturbed the ecology of the Yangtze River, so the Yangtze River has entered a stage where effective governance must be carried out.
The spawning channel of migratory fish animals was blocked, and there were also many incidents of boats scratching rare fish animals. The Yangtze River White Sturgeon became extinct, and the Chinese Sturgeon and Baiji Dolphin were also endangered, and the population of economic fishes increased rapidly.Decrease, the problem of river water pollution is also more serious.
Many people have only seen the "Yangtze River’s Ten-Year Prohibition of Fishing Plan", and one-sidedly believe that the only practical action for the governance of the Yangtze River is to restore the Yangtze River’s ecology.Other tasks are actually more time-consuming and laborious when implemented. At present, in less than two years, we have indeed seen finless porpoises appearing in certain sections of the Yangtze River more frequently, sometimes even reaching 20 to 30 in number. I hope we can detect them this fall.The Chinese sturgeon spawned naturally, and even traces of the Baiji dolphin were found again.
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