Why freshwater is a very limited natural resource

Yes.

Freshwater resources are natural resources, and freshwater resources leakage is what we usually call water resources, referring to freshwater resources on land. It is made up of water from rivers and lakes, mountain snow, glaciers, and groundwater.

Natural resources refer to the materials in nature that humans can directly obtain for production and life. It can be divided into three categories, and the first is to take renewable resources without fiber, such as various metallic and non-metallic minerals, fossil fuels, etc.

Here are the reasons why freshwater resources are limited:

1.The importance of water: Water is one of the most abundant chemical compounds on earth, and freshwater is essential for the survival of humans and most living things.

2.The total amount of freshwater is limited: although about three-quarters of the world is covered with water, and the total volume of water on the planet is about 1,386 million cubic meters, it is only about 3,500 kilometers cubic meters in the oceans.

If we deduct the ice caps on top of the inaccessible glaciers and alpine oaks, as well as the amount of water distributed in saline lakes and inland seas, the amount of water in lakes and rivers on land is less than 1% of the total water volume of the planet. Strictly speaking, freshwater resources refer to the available water of Danyoukai, which has to be further deducted from the consumption of plant transpiration and ground evaporation2 3, so water resources are more limited.

3.The distribution of freshwater resources and its imbalance are not proportional to the distribution of the population on the planet.

4.Water scarcity is further exacerbated by water pollution and waste. <>

The Earth's freshwater resources are very limited and spatially unevenly distributed, with only those available for human, animal and plant use. One of the main areas of pressure on freshwater resources is the demand for water for irrigation and food production.

1. The Middle East and North Africa is the most water-stressed region on the planet. Twelve of the 17 countries and territories with extreme water scarcity are in the Middle East and North Africa, with Qatar being the most severe, followed by Israel and Lebanon.

2. In Africa, Libya and Eritrea have the greatest water stress; India is in 13th place. Many parts of India are facing chronic water stress, and groundwater resources, which are mainly used for irrigation, have been severely overdrawn, all the more so given that India's population is three times the population of 16 other countries and territories.

China is currently one of the countries in the world with a serious shortage of freshwater resources, and the per capita water resources are insufficient. More than 400 of the country's more than 600 cities have a shortage of water supply, especially in the northern region. Due to the influence of the monsoon climate in China, the temporal and spatial distribution of water resources is uneven, and drought and flood disasters occur frequently, which is often prone to the phenomenon of flooding in the south and drought in the north.

In addition, human beings use water resources irrationally, and water resources are seriously polluted and wasted. In recent years, due to the continuous occurrence of the phenomenon of destroying and burning the knowledge of forests, land reclamation and indiscriminate cutting, soil erosion has intensified, rivers have been cut off in some areas, and the water area of lakes has shrunk, resulting in a serious shortage of water resources in some areas of China, and it is difficult for people and livestock to drink water.

Suggestions: 1. Save: 1. Moderately improve the water standards of households and enterprises; 2. Advocate water-saving technologies such as sprinkler irrigation and drip irrigation; 3. Water resource recycling; 4. Expand the coverage of green vegetation and conserve water sources; 5. Expand the publicity of water conservation.

2. Governance: 1. Increase sewage treatment efforts and improve sewage discharge standards; 2. Actively research and develop seawater desalination technology to reduce desalination costs; 3. Build reservoirs and reservoirs to transfer water across river basins.

In fact, there is no shortage of fresh water resources in China, and China has the Yangtze River and the Yellow River. There are also many lakes. There are reservoirs in various places, and the reserves of fresh water resources are very abundant, but the main problem in our country is that the population is too large, and the water resources are unevenly distributed.

Affected by the climate, China often has floods in the south and drought in the north. Therefore, the South-to-North Water Diversion Project is also a way to solve the summer drought in the north.

Saving water is a good virtue, don't waste it just because you have a lot of water. Because water in nature cannot be directly supplied to life, it needs to be purified. This purification process also consumes manpower and electricity. So in essence, you are wasting electricity.

1) Most of the earth's freshwater resources are glaciers at the poles and high mountains, and most of the rest are deep groundwater;

2) At present, the freshwater resources used by human beings are mainly rivers and lakes and shallow groundwater, which only account for the total amount of freshwater in the world.

Therefore, the answer is: glaciers; Lu Dapai deep groundwater; rivers and lakes; Shallow groundwater