? Is there water shortage in the plain areas such as Huanghuai in North China? Scientist: 20% of the world's underground wells are either exhausted.

The emergence and existence of life on earth is mainly due to the basic conditions that life on earth meets, such as oxygen and water. However, with the change of the earth, today's earth has undergone "earth-shaking" changes. Many people say that our earth's ecosystem has gone to an extreme mode. Indeed, various extreme climate phenomena are affecting the survival of life.

High temperature, drought, heavy rainfall, strong storms and so on are all raging around the world. According to a new study published in Science magazine, our earth is "exhausted", which is not a good thing for human beings. Once the earth "dries up", life crisis will appear.

The study is based on data provided by researchers at the University of California, and the conclusion is published in the journal Science. Scientists have warned that according to the data, through the analysis of groundwater construction data of millions of wells around the world, human beings have now used up most of the groundwater on the earth, almost half of which is used for agricultural irrigation. However, the use of this amount of water has reached a critical state, and if it continues, mankind will face a crisis.

The researchers pointed out that up to 20% of the world's underground wells are below the scale line of about 5 meters, which means that in the next few decades, it is likely to become dry, when mankind will face a water crisis. In addition to the over-exploitation of groundwater by human beings, under the background of global warming, many areas have been in a state of long-term drought, so this is the influence of human beings and nature on groundwater resources.

Of course, from the side, there are not many "groundwater" resources on the earth. In recent years, the water shortage in many areas has been very obvious, but it still needs to be developed. Therefore, it is understandable that the overuse of water resources is caused by unreasonable utilization and unreasonable development of water resources, which is the most critical. Therefore, the earth is "drying up", and the water crisis facing mankind has been staged in many parts of the world.

According to human analysis of the earth, water is actually one of the richest resources on the earth. About three quarters of the world is covered by water, which is about 6543.8+386 million cubic kilometers, but 96.5% of these water resources are distributed in the ocean. The water available to human beings is only about 35 million cubic kilometers, so the proportion is very small. Many people may say, can't this ocean water be purified and utilized? It is true that many water-deficient areas are also implementing this plan today.

However, the cost of purifying ocean water is too high, so now it is mainly water resources, and the direct utilization is limited. Groundwater is the largest mining area for human beings, so the increasing use of water by human beings will only lead to the shortage of water resources, and eventually human beings may really face the problem of survival because of water resources problems. This is also the reason why the scientific community constantly advocates the rational use of water resources. Once water resources are scarce, there is no foundation to support life.

Of course, many people say, isn't mankind looking for a "second earth" to survive now? Mars migration may occur in the future, and it is getting closer and closer. By then, mankind will turn Mars into a "second earth" and can also develop the water resources of Mars. It's good to have such an idea, but Mars has really been transformed. According to scientists, it will take hundreds of years, so now these people may not see this day, and rational use of the earth's water resources is the key.

In China, the annual variation of groundwater was also released on 202 1. The data show that in 2020, the total groundwater reserves in China's major plain basins will increase by 65.438+0.9 billion cubic meters, of which the shallow groundwater reserves will increase by 2.84 billion cubic meters and the deep groundwater reserves will decrease by 65.438+0.75 billion cubic meters. The groundwater reserves in Sanjiang Plain and Sichuan Basin 1 1 Plain Basin are increasing year by year.

Groundwater reserves in North China Plain, Huanghuai Plain, etc. It is still in a state of loss, so generally speaking, the North China Plain and the Huanghuai Plain are still at risk of water shortage. After all, water storage is still at a loss.

Therefore, from this data, we can see that there are still some areas in China that are short of groundwater, which reminds us once again that rational utilization of water resources is the most important issue today.

Nowadays, water resources are in a state of "shortage" on the earth. In fact, we all know that after a large number of groundwater exploitation, human beings are already facing a water crisis. At the same time, coupled with the influence of climate, the naturally formed "groundwater" is also much less, so there is no water to eat when many areas are dry now. If groundwater is developed reasonably, even if there is a climate-induced drought, we still have groundwater supply, and it will not stop raining completely.

This is the problem. The earth is "drying up", and the role played by human beings is indispensable. In fact, it is the climate. However, the water resources that human beings can really use only account for 0.26% of the total water of the earth. However, more than 654.38 billion people in the world are short of water now. According to experts' estimation, by 2025, the number of people in the world who are short of water will exceed 2.5 billion, so this is a dangerous signal.