Articles on the protection of water resources

Water is the source of life, the foundation of life, and human health cannot be separated from water. People can go without food for several days, but they can't go without water for several days. Now, there are 2 billion people in the world who are seriously short of water! ! The water crisis has sounded the alarm for mankind!

Although China is rich in water resources, most of the water is seawater, which is salty and cannot be directly drunk. In addition, most of the fresh water is distributed in the cold north and south poles and mountainous areas with snow all year round, and there are few fresh water resources left. Moreover, the distribution is uneven, with less in the east and more in the west, less in the south and less in the north, and there are many places lacking water.

When I was a child, I thought, isn't the water in the faucet always flowing? My parents often tell me where there is drought recently, not to mention planting crops, that is, it is difficult to guarantee the water that people drink. I always find it incredible. Isn't water the most abundant thing on earth? Aren't there so many rivers, lakes and seas? How can there be water shortage!

Later, as I grew up, I gradually understood that water is the source of all life on earth. The total amount of water on the earth is 18 trillion liters. This amount seems to meet the global population's demand for water resources, but the actual situation is not optimistic. Of the existing water reserves, 99% are seawater and polar ice unsuitable for human use, and the remaining 1% is mostly in the stratum below 800 meters. The water in rivers and lakes that people depend on only accounts for 0.0 1% of the total. There are 18 countries in the world whose per capita renewable water resources are insufficient 1000 cubic meters. According to a report by the World Resources Institute, there are 3.4 billion people in the world who can only get 50 liters of water every year on average, which shows that mankind is facing a crisis of fresh water shortage.

This grim situation has not attracted enough attention, and rivers and lakes on which people depend are facing more and more pollution threats. Only by preventing pollutants from entering rivers and lakes or reducing their quantity will the original pollutants in rivers and lakes disappear, dilute and gradually decrease with the water flow. Therefore, the most fundamental way to prevent and control the pollution of rivers and lakes is to control the pollution sources. We know that the pollution sources of rivers and lakes are industrial wastewater and urban and rural domestic sewage. The state has formulated a series of laws and regulations to protect water resources, and made strict restrictions and regulations on wastewater discharge.

If we don't cherish water resources, the last drop of water spilled on the earth in the future will be our own tears.