Poyang Lake is dry, and so is Dongting Lake, which is the largest and second largest freshwater lake in China. The former turned into a flash of lightning from Dongting Lake, which was 800 miles away, and the latter turned into a vast prairie. A large number of fish that originally lived in the lake were directly dried into dried fish due to lack of water. In addition, all sections of the middle and upper reaches of the Yangtze River are seriously short of water, and it can even be said to be on the verge of drying up. Some people may wonder, the Yangtze River is so water-scarce, and after 10 years of fishing ban and 2 years later, the ecology has obviously recovered. Where did the fish that used to live in the river go?

It can only be said that the ten-year fishing ban was good, but there was a serious water shortage in the middle.

Originally, the waters were plentiful, and not only fish could reproduce freely, but the number of flagship species such as finless porpoises was also gradually recovering. However, the middle and upper reaches of the Yangtze River, where there has been no rain for several months, destroyed the ecological restoration achieved after the fishing ban. Many fish The child was directly dried into dried fish because of being stranded, and the stench of dead fish can be smelled in many sections of the Yangtze River.

Some people may say that fish are not stupid, if there is a lack of water, they will swim to places with water by themselves. Although this is the reason, many fish did swim to the depth of the water, and even swam directly to the lower reaches of the river where the water was not so scarce, but as the water level dropped rapidly, there would only be more fish than water in such a situation.

In general, due to the lack of water, the survival of some fish in the Yangtze River will inevitably have problems such as stranding and death. So, if you see a fish stranded on the edge of the Yangtze River, can you take it home and have a full meal? It is still in the protection period of the 10-year comprehensive ban on fishing in the Yangtze River, which is not allowed in principle. But more people think that as long as the ecology is not damaged, the net is not released, and the fish is not electrocuted, even if the stranded fish is not caught, it will stink by the river, so it is better to take it home and have a full meal. What do you think of it in front of the screen? ?

The water shortage of the Yangtze River is so serious, why the Three Gorges in the upper reaches didn’t rush to release more water to support it? Could it be that the Three Gorges really can’t play a role in drought resistance?

In fact, as early as the beginning of August, the Three Gorges Reservoir replenished more than 1 billion cubic meters of water downstream, and released another 500 million cubic meters of water shortly thereafter, but it still did not alleviate the drought in the Yangtze River. Careful viewers may have noticed that Poyang Lake, which has become a prairie, has the largest water storage capacity of 26 billion cubic meters, and Dongting Lake, the second largest freshwater lake, also has more than 17 billion cubic meters. In this way, the more than one billion cubic meters of the Three Gorges released downstream is really a drop in the bucket.

Those who have probably known the Three Gorges should know that the crest elevation of the Three Gorges is 185 meters, the normal storage level is 175 meters, and the total storage capacity is 39.3 billion cubic meters, of which the flood control storage capacity is 22.15 billion cubic meters. Looking at the data, no matter how small the water storage capacity of the Three Gorges is, it can be as large as Dongting Lake. Since the downstream is so short of water, why not release more water? The answer is that there is really no water left.

Every year from May to August is the main flood season in the Yangtze River Basin. The most essential function of the Three Gorges Dam is to prevent floods and ensure that the downstream, especially the Jingjiang section, is not attacked by the upstream flood peak.

Therefore, according to the practice of previous years, the Three Gorges will gradually lower the water level starting from November every year, in order to free up enough flood control storage capacity for the flood season of the next year, and November last year was no exception. But this year is very embarrassing. Unexpectedly, God is very abnormal. The flood season turned dry. Not only did there not be floods, but also there was not enough rainfall for several months, resulting in insufficient water supply in the upper reaches. Before the summer of this year, the Three Gorges had already drained 22.1 billion cubic meters The flood control storage capacity has been emptied, and the Three Gorges has been lowered to a dead water level of 145 meters, and there is no water to release. The remaining more than 17 billion cubic meters is guaranteed storage capacity, and the water will only be approved for use unless there are super special circumstances.

In general, the function of the Three Gorges for flood control and drought relief is unquestionable, and the blame for extreme weather should not be blamed on the Three Gorges Dam, which is beneficial to the country and the people.

The Yangtze River is seriously short of water. Is the south-to-north water diversion really the culprit?

Let me talk about the answer first. It is not directly related to the South-to-North Water Diversion. This question is purely taken for granted.

This year, the middle and upper reaches of the Yangtze River are seriously short of water. Historical relics that have been submerged by the Yangtze River have appeared in various places. The Wuhan section has also exposed a small road in the middle of the river, and some tributaries of the Yangtze River have even bottomed out. The reason for this is firstly that the extreme weather has caused the flood season to turn dry, and some places have even not seen a drop of rain since June. Secondly, the extreme high temperature this summer has led to a huge amount of evaporation, and many lakes have bottomed out.

However, there are always people who eat melons who don’t know the truth. They hear that the wind is rain, and take a little bit of their own cognition, and take it for granted that the shortage of water in the Yangtze River is caused by the south-to-north water diversion. Such remarks are not worth refuting at all.

First of all, at present, only the east and middle routes of the South-to-North Water Diversion Project have access to water.

The East Route project draws water from the Yangtze River from Yangzhou in the lower reaches of the Yangtze River, and uses the Beijing-Hangzhou Grand Canal and its parallel channels to lift water step by step and send it northward, diverting the vast Yangtze River water to Shandong and Hebei. Compared with the more than 900 billion cubic meters of the Yangtze River entering the sea, this is not even a drop in the bucket. What's more, the water shortage of the Yangtze River this year mainly occurs in the middle and upper reaches, and has little to do with the lower reaches.

As for the middle route of the South-to-North Water Diversion Project, it transfers water from the Danjiangkou Reservoir and goes north along the west side of the Beijing-Guangzhou Railway, transporting high-quality water sources from the Han River and Dan River to Henan, Hebei, Tianjin, and Beijing.

Yes, you heard that right, the mid-line project of water diversion started from Nanyang, Henan received 3.769 billion cubic meters of water every year, more than three times that of Beijing’s 1.24 billion, and it is the largest beneficiary province of the mid-line project.

What's more, the water transferred by the middle route project mainly comes from the Han River. The annual runoff of the Han River reaches 24.5 billion cubic meters, while the middle route project only diverts 9.5 billion cubic meters of water. Although the South-to-North Water Diversion Project will divert water from the Yangtze River Basin to a certain extent, the negative impact is far less than imagined, and the South-to-North Water Diversion Project should not be blamed for the Yangtze River's water shortage. What do you think of this?