Please summarize the three characteristics of our current water resources

Not to mention per capita, the reality is that first, you can't find anything that has not been polluted, second, good water has to be transferred north to the capital, and third, the groundwater is really running out.

Scarcity in some areas.

Water mobilization has been successful.

The water cleanliness was also good.

The three characteristics of China's water resources are as follows:

1. China's total water resources are large, but the per capita share is small.

2. The regional distribution of water resources is uneven, with more in the east and less in the west, and more in the south and less in the north.

3. The time distribution of water resources is uneven, with more in summer and autumn and less in winter and spring.

Freshwater resources totaled 2,800 billion cubic meters, accounting for 6% of the world's water resources, ranking fourth in the world after Brazil, Russia and Canada. However, China's per capita water resources are only 2,300 cubic meters, which is only 1 4 of the world average, and it is one of the poorest countries in the world in terms of per capita water resources.

China is located on the west coast of the Pacific Ocean, with a vast area, complex topography, and a very significant continental monsoon climate, resulting in the uneven distribution of water resources. The precipitation decreases from the southeast coast to the northwest inland, and can be divided into five zones: rainy, humid, semi-humid, semi-arid, and arid. Due to the uneven regional distribution of precipitation, the imbalance of water and land resources in the country has been caused.

In most parts of the country, there is little rain in winter and spring, and more rain in summer and autumn, and the rainy season in the southeast coastal provinces is earlier than before. The precipitation is most concentrated in the pre-mountain area of the Huang-Huai-Hai Plain, and the flood season mostly occurs in the form of heavy rainfall, and in some years, the heavy rainfall in one day exceeds the average annual precipitation for many years.

a. The total amount is relatively abundant.

b. The per capita water resources are less than those of Hail Shiliang.

c. The spatiotemporal distribution is extremely uneven.

d. The water source is seriously polluted.

Check the analysis of the answer source wide case [correct return to friend answer] a, b, c, d answer analysis].

1. China's water resources are mainly found in surface water ecosystems and groundwater ecosystems such as rivers, lakes, reservoirs, and swamps.

2. The total amount of water resources is relatively abundant, but the per capita and per mu of cultivated land are small.

3. The average annual precipitation in China is 6,085.4 billion cubic meters, equivalent to a precipitation depth of 643 millimeters. The annual average total water resources are 2,774.1 billion cubic meters, ranking sixth in the world.

4. The spatial distribution of water resources is uneven, which does not match the distribution of differential productivity. Water resources are scarce in the north and abundant in the south, and there is a huge disparity.

The Role of Water When you look at the Earth from space, the Earth's surface takes on a fascinating azure color, which is a display of water on Earth. The presence of water on Earth is one of the important features that distinguishes Earth from other planets in the solar system.

The role of water is enormous:

From the perspective of the formation of the geographical environment, the hydrosphere is the fastest changing and most active sphere among the various spheres of the earth. It penetrates and interacts with other circles outside the earth, and plays an important role in the formation, development and evolution of the natural geographical environment. If there is no dense river network, the south of the Yangtze River in China will not have the reputation of "the land of fish and rice"; Without an adequate source of groundwater, there would be no "oases" in arid desert areas; Without the warm ocean currents to transport heat, the island of Murmansk, which is located at high latitudes, would not be free of freezing ...... all year round.

From the perspective of the formation and development of life, water is an unswerving participant. Water is present in every living organism, for example, the water content of human tissues is about 70, and the water content of blood is 79; The water content in the body of the plant is also considerable. It has been said that there is no life without water, and this is not an exaggeration.

From the point of view of industrial and agricultural production, the demand for water is very large. For example, it takes about 100 tons of water to produce one ton of steel; 18,000 tons of water are needed to irrigate one hectare of rice; A thermal power plant with a power generation capacity of 1 million kilowatts requires hundreds of millions of tons of fresh water every year. Whether in the formation of the natural environment, the birth of life, or human production activities, water plays a very important and irreplaceable role.