The water level of the Yangtze River has reached new lows in many places, and there has been a reve

This year saw the worst drought on record, and the reason behind this is extreme weather.

caused by frequent occurrences. Among the many extreme climate events, drought develops slowly, lasts for a long time, affects a wide range of areas, and causes greater harm. Due to its long duration and large impact area, especially during the critical period of autumn harvest and autumn planting, the disaster of its formation is particularly serious.

In other words, the greater the intensity and duration of drought stress, the greater the damage to the plants. The occurrence of extreme weather events often triggers agrometeorological disasters, which bring huge losses to agricultural production and food security.

poses a serious threat.

Behind the frequent occurrence of extreme weather is global warming.

consequences. Global warming.

, climate change is manifested not only in changes in climate averages, but also in changes in extreme climate events. In the context of global warming, the global climate has changed to varying degrees, and the frequency and intensity of extreme weather events such as high temperature and heat waves and heavy precipitation have increased. The occurrence and intensity of extreme weather and climate events are also increasing, and the issue of climate change has attracted more and more attention.

Aridification is a global climate and environmental problem in recent years.

An important issue in . In recent decades, with the continuous warming of the global climate, the frequency and intensity of extreme climate events have been on the rise, and the frequency of drought events has also been on the rise. Due to the dual effects of climate change and underlying climate change, the Yangtze River Basin.

In particular, the frequency of drought disasters in the middle and lower reaches of the region is on the rise.

Global warming is inseparable from the destruction of the environment by human beings. On the issue of the ecological environment, the selfishness and short-sightedness of human beings are very obvious, which has further damaged the ecological environment, even to the point of no return. On the other hand, with the rapid development of human social economy, resource and environmental problems are becoming increasingly prominent, which is essential for the sustainable development of human society.

poses a serious threat.

In general, global warming is the trigger for extreme weather, and it is also the main reason for the frequency of extreme weather. Under such circumstances, what we can do is to jointly address the challenge of climate change and jointly safeguard the common home of mankind.

This year's drought is due to the persistence of hot weather, which has led to an increase in people's water consumption. At present, the critical time of rice growth requires more water consumption, and the amount of precipitation has decreased, so our climate is so dry under the high temperature weather.

Because there are still many extreme weather this year, and the temperature in many provinces and areas of my country is relatively high, so it is very dry.

Since June this year, the rainfall in the Taihu Lake basin has been more than 70% less than that of the same period in normal years, especially the rainfall during the plum rainy season, which has led to the low water level of Taihu Lake. At 10 o'clock on July 16, the water level of Taihu Lake was lower than that of the same period in normal years and the lowest in the same period in the past 20 years.

The most important thing is that the subtropical high pressure zone has caused continuous high temperatures, which naturally leads to the evaporation of water in many water systems, but it has not been effectively replenished.

According to news reports, the water level of the Yangtze River is continuing to drop in many places, and due to the impact of high temperature weather, the water level of the river is currently falling and the phenomenon of continuous high temperature weather has occurred in many places. What's even more outrageous is that many large lakes have appeared in the phenomenon of long grass in the lake, which is impossible to see in previous years, at this time in previous years, it is often heard that floods and flood seasons, and this year what I heard is that the whole country has entered the state of large steamers.

This rare phenomenon is also a matter of course, mainly due to the influence of the subtropical high pressure zone, between July and August last year, in fact, this time is often a time when there is more rain, but this year not only did it not rain, but the temperature was much higher than before. Judging from the news that can be seen in the current weather forecast, it is basically hovering above 38 degrees, which means that the Yangtze River is not without a reason for this low water level, we must look at this phenomenon rationally, and at the same time have to carry out a scientific hydration of the surrounding crops, otherwise the consequences will be quite serious.

This year's unusually high temperature weather has led to the phenomenon of drying up and drought in many places, of course the rivers are dry, and the places are of course dry; In many places, you have to rehydrate certain crops at night, because the temperature will be lower at night, and the water will evaporate more slowly. We should also look at this phenomenon rationally, now when individuals travel, they can travel less and travel less, and they must bring good water and pay attention to hydration, otherwise it is really easy to get heat stroke if you are not careful.

The Wuhan Flood Control and Drought Relief Headquarters said that the water level of the Yangtze River continued to recede after entering the main flood season this year, and there was a rare phenomenon of "reverse drought in the flood season". This is due to the fact that the Yangtze River basin has significantly less rainfall, less water from the upper reaches of the river, and increased evaporation due to persistent high temperatures.

It is the hot weather that makes the supply of the river not replenished, so there will be a dry phenomenon, and then we have to deal with this extreme weather.

Because it is predicted that there will be a lot of precipitation in the flood season this year, the water was released in advance, and as a result, the high temperature and less rain led to less precipitation, resulting in a reverse drought in the flood season.

After the Three Gorges Dam impounds water after the flood every year, it will affect the flow and water level of Poyang Lake, which will affect the length of the dry season of Poyang Lake. The specific impact is as follows:

1.Extended dry season: Post-flood impoundment will increase the amount of water in the downstream river of the Three Gorges Dam, resulting in a decrease in the amount of water received by Poyang Lake, which will reduce the water level of Poyang Lake and prolong the dry season.

2.Shorten the dry season: If the Three Gorges Dam properly releases water during the post-flood impoundment, it can increase the amount of water coming to Poyang Lake, thereby raising the water level of Poyang Lake and shortening the dry season.

3.Impact on water quality: The impoundment of the Three Gorges Dam will cause the water level of the downstream rivers to rise, increasing the chance of pollutants entering Poyang Lake.

In summary, the impact of the post-flood water storage of the Three Gorges Dam on the length of the dry season of Poyang Lake is complex, and it is necessary to appropriately adjust the water storage of Hepai to reduce the impact on Poyang Lake.

The main reason is because of this year's ultra-high weather, which has led to drought and early dry season. This year's high temperature weather is a wake-up call to people around the world, if we don't pay attention to the change of climate warming, then the severity of the drought will become more and more serious, so how should we deal with this situation?

1. Reasons for entering the dry period

The reasons are divided into two major points: one is the direct cause, that is, the continuous high temperature weather this year compared to previous years; Another major reason is global warming. This year's Yangtze River will have a serious drought, and not only the Yangtze River, but also many parts of the world have experienced varying degrees of drought.

For example, Zhuanyang Lake in Jiangxi Province also entered the dry period early, and other countries also discovered wartime chariots because of the dry period. According to reports, the overall area of the Amazon forest has decreased by more than half compared to previous years, and this reduction has either been burned in fires or manually cut down. As a result of the loss of forests, more carbon dioxide cannot be absorbed enough, which can easily lead to climate warming.

Second, how to solve the drought situation

There are also two ways to deal with drought: one is temporary, with artificial rainfall to alleviate the damage caused by drought; The other is a fundamental way, which is to solve global warming, which cannot be solved by one person and one country, and requires the joint efforts of people around the world to finally solve it, and the solution cycle is not a one-time and a half, it is a long-term and arduous task.

3. How we should do it

As a part of the earth around us, we can also do our part to improve global warming, and what can we do? And what to do? In fact, what we can do is to use public transportation or carbon-free travel as much as possible, and not to destroy the vegetation around us, and to absorb carbon dioxide by planting more flowers and plants, etc., these are all we can do.

The emergence of drought reminds us of the importance of improving global warming.

The severe drought in the Yangtze River is mainly caused by the absence of rainfall for a long time. Artificial rainfall is required.

The severe drought in the Yangtze River is caused by the long-term high temperature and rainless weather in the Yangtze River basin. The water level drops to the dry winter season because of the high temperature but no rain.

It may be that this year's rainfall is quite abnormal, especially in the case of high temperatures, which causes the water to evaporate very quickly.

The water level in many parts of the Yangtze River has reached new lows, and the flood season has become dry and dry, and the reason for this situation is that under the influence of high temperatures, water vapor evaporates quickly and precipitation is low, which leads to this situation.

On August 15, we can learn that the water level of the Yangtze River has reached a record low in many places, but the water has dried up during the flood season, which is also a rare phenomenon. According to some news from the Ministry of Water Resources, the precipitation in the Yangtze River basin since July should be the largest time of the year, but the blood volume has decreased significantly compared with the same period in previous years, and most areas of the basin have high temperature weather, and high temperature weather, hot water generally exceeds half a month in some areas of the middle and lower reaches, and the high temperature weather will also exceed 25 days, and some areas are continuous high temperature without rainfall, which leads to a significant reduction in water flow.

The main stream of the Yangtze River, Poyang Lake and Dongting Lake now have water levels that are also lower than in previous years, and there are some measured records, and compared with the same period in previous years, there is a serious shortage of small reservoirs in the lowest part of the area. In Hunan, Hubei, Anhui, Sichuan and other places, the area of cultivated land affected by drought can also reach 9.67 million mu, of which 830,000 people are affected by drought. The water level of the Yangtze River in Hankou is now meters, and it can be found that it has also reached the lowest level in history, according to the information of the relevant headquarters of flood control and drought control in Wuhan, the water level of the Yangtze River has continued to decline after entering the flood season, and this new phenomenon is very rare.

Rainfall in the Yangtze River basin is also decreasing because of less water upstream and increasing evaporation due to persistently high temperatures. On July 9, according to relevant data, the precipitation in Wuhan was also decreasing compared with the same period, and the precipitation value was low. In general, the water level has dropped significantly due to the influence of the weather, and there will be drought in many places, and the weather is hot and the evaporation is high, and the precipitation is low, so the water source of the Yangtze River has become less.

The Yangtze River region has little rainfall, the water level continues to recede, and traces of water level can be clearly seen, and the high temperature leads to an increase in evaporation.

Because there are still many extreme weather, dry weather and hot weather will cause the water level to drop until it dries up.

After entering the main flood season of the Yangtze River, due to the continuous high temperature, the rainfall in the Yangtze River basin is significantly less, the upstream water flow is reduced, the evaporation is increased, and the water level continues to drop.

The water level of the Yangtze River is dry during the flood season, creating a record low in the same period, this situation reminds us of this year's high temperature abnormal weather, presumably most of the people in the southern region have experienced abnormal high temperature weather this year, and the surface temperature in some areas can reach 60 70, which has greatly affected the local both animal husbandry and agriculture, because we all know that both the development of animal husbandry and agriculture needs water resources, and the dry weather is undoubtedly a catastrophic blow to these two industries, especially agriculture, A large number of crops were in the field, and it was the harvest season, but the dry weather caused some crops to die of thirst due to the hot weather, which also led to a reduction in the harvest.

Not only that, the manufacturers of animal husbandry, because of the abnormal high temperature weather, so that the breeding of pigs, sheep and cattle have individual heat stroke, such as some pigs in the farm affected by the high temperature weather, there is a large number of heat stroke, which is undoubtedly to increase the cost of breeding, for the future sales, there will definitely be **. Therefore, extreme weather has a great impact on our production and life, and not only that, the whole world has been affected by extreme weather, which undoubtedly has brought a serious blow to the global economic development.

In view of this ever-changing weather, we should pay attention to it, after all, the earth is our home, if we are in an extreme weather for a long time, it will not only affect our life and work, but also affect the survival and development of human beings, especially for our next generation, these extreme weather will cause the health of the next generation to be damaged, affect their healthy development, and hope that in the future our environment will not refresh the historical extremes, especially now that the glaciers are melting, Some of the rocks buried deep under the glacier are gradually exposed, which will accelerate the melting of the glacier and is not conducive to our human survival.