Question 2: What are the reasons for the shortage of water resources in China? There are too many people! If China has hundreds of millions of people, China will not be short of water; Then there is over-exploitation, and the resources are seriously damaged!
Question 3: What is the main reason for the lack of water resources? China is short of water resources for two reasons.
Natural reasons: 1 low per capita water resources. China ranks sixth in the world in total water resources, but China has a large population. If calculated according to the per capita water resources, the per capita water resources is only 2500 cubic meters, which is about 1/4 of the world's per capita water resources, ranking 1 10 in the world.
2. The distribution of water resources is uneven. The distribution of water resources in China is out of harmony with the distribution of population and cultivated land. The Yangtze River basin and its southern Pearl River basin, Zhejiang, Fujian and Taiwan rivers and southwest rivers account for 36.5%, 36% and 54.4% of the country's land area, cultivated land area and population respectively, but the total water resources account for 8 1% of the country, and the per capita water quantity is 1 of the national average. The areas of Liaohe River, Hailuan River, Yellow River and Huaihe River account for 18.7% of the country (equivalent to half of the south), but the total water resources are only 10% of the four southern regions. Cultivated land in the north accounts for 45.2% of the total population and 38.4% of the whole country, and the total amount of water resources is even less, especially in the Hailuan River basin. The per capita water consumption is 16% of the national average, and the average mu is 14% of the national average. This unbalanced distribution of water resources seriously restricts the healthy development of the national economy.
Man-made reasons: serious water pollution and low water use efficiency. 1. Some areas blindly develop projects with high water consumption and high pollution regardless of their own water resources conditions; Some areas with relatively abundant water resources do not pay enough attention to water conservation and lack the awareness of being prepared for danger in times of peace. 2. The investment in water-saving facilities is seriously insufficient. 3. Insufficient publicity and education, weak public awareness of water conservation, and widespread waste of water resources have not yet formed a good water-saving atmosphere in the whole society.
Question 4: The reason of water shortage in China is serious pollution, huge population, less and less available water, but more and more people drink water. Can water resources be relaxed?
Question 5: An example of water shortage in China. Water is the basic condition for the reproduction of human beings and other creatures, and it is an irreplaceable important resource for human life. There is such a public service advertisement: "The last drop of water of human beings is their own tears!" " "At this point, I seem to see a huge eye rolling down and falling to the ground with a voice. Behind the tears are cracked land and dead crops everywhere, and I vaguely hear the dying pain of nature because of thirst.
Some people may think this advertisement is alarmist, but vivid examples add enough footnotes to it. This is a true story: In 2006, Chongqing, a municipality directly under the central government in western China, suffered from drought. At that time, the sun was overhead, and cracks appeared in the land. Every crack is thirty or forty centimeters deep and twenty or thirty centimeters wide, so cruel that even the crops bow their heads and people can't get a grain. Someone said, "It doesn't matter if you don't eat or drink for ten days. Not drinking water for ten days is a big deal. " Facts have proved everything: people in Chongqing are thirsty, and some children and old people died because they didn't drink water for several days.
Jinan is known as the "Spring City" and used to be "every spring and Liu Yiyi". There is enough water, and many cities that lack water are envious. But now Jinan, due to the need of building a well-off society in an all-round way, over-exploitation of groundwater has caused Baotu Spring, a famous scenic spot, to stop spraying several times. The fresh and energetic spring water written by Lao She has become a beautiful and painful memory of the spring city, and another water-deficient city is about to appear before our eyes. How do you feel after hearing this story?
As far as I know, China is a country with severe drought and water shortage. China's total fresh water resources are 2.8 trillion cubic meters, but China's per capita water resources are only 2,300 cubic meters, which is a quarter of the world average and one of the poorest countries in the world. However, China, with a population of/kloc-0.3 billion, is the country with the largest water consumption in the world. Someone said, "It doesn't matter to waste a drop of water. We don't lack this. As soon as the tap is turned on, water gushes out. " Is that really the case? No, vivid examples have long denied all this.
Human beings do not cherish water resources and protect ecological balance, and finally taste the bitter fruit they planted. Nowadays, many people drink polluted water and chew polluted food every day. While enjoying modern industrial civilization, people are also threatened by water pollution, resulting in non-digital social and economic losses. This is nature's revenge on human beings, and it is a great mockery of human self-blame!
Water is the source of life and the foundation on which all things live. Saving water and protecting water resources are our unshirkable responsibilities. Let's cherish and protect water resources for the lovely and fragile earth.
In Dunhuang, there is a crescent moon spring. It has a history of hundreds of years, and people praise it as a mirror in the sky. The stars are playing in heaven, which is fascinating. However, with the passage of time, today's crescent spring is not as grand and spectacular as before. Underwater aquatic plants have withered and died. The fish didn't swim as freely as before, but accidentally returned to the mud pit under the ground, and the water level dropped obviously, and there was a fence around the crescent spring. Now people can't get close to it. This shows the importance of water to animals!
A drop of water may not save a person's life, but it can prolong a thirsty person's life. A drop of water may not fill the earth with spring, but it can save a dry tree.
I learned from TV that there is a 1000-pound chinemys reevesii. In recent days, it has lost its appetite and refused to eat. The staff around were anxious and found the veterinarian. They want to do B-ultrasound for it. But because it is too heavy, even veterinarians can't help it. A few days later, chinemys reevesii died. It died tragically. When the staff dissected. It was discovered that chinemys reevesii's stomach was wrapped in a black plastic bag. It is said that it was because the sea water was turbid and the turtle could not see the food clearly that it swallowed the plastic bag into its stomach, which led to its inability to eat and its tragic death.
Wake up! Terrible human beings! The culprit of this consequence. It's actually you! From now on, save every drop of water, protect the water source and save our friends!
Question 6: The causes of water shortage in North China in recent years and the measures to solve it: 1. Temperate monsoon climate, less water, uneven distribution; 2. The industry and agriculture in North China are developed, and the water demand is large; 3. Overexploitation of groundwater forms a funnel structure; 4. Water shortage, such as water pollution; 5. Waste water.
Solution: 1 Inter-basin water transfer, such as South-to-North Water Transfer; 2. Build a reservoir; Save water; 3. Prevention and control of water pollution; 4. Rational exploitation of groundwater.
Question 7: The main reason of water shortage The scarcity of water resources is essentially determined by the non-renewable nature of water resources. The total amount of water on the earth is certain, and the total amount of drinking fresh water is even less. With the increase of usage and unreasonable waste, the shortage of water resources is becoming more and more obvious. With the development of economy and the increase of population, the demand for water resources is increasing. Coupled with the unreasonable development and utilization of water resources, many countries and regions have different degrees of water shortage, which is called water shortage. In order to solve the problem of water shortage, the most promising thing should be to develop those water that cannot be used. For example, seawater desalination, groundwater development and collection, and the utilization of polar glaciers. In fact, the amount of water resources on the earth is sufficient. When we say water shortage, we only mean fresh water, or whoever can use it at will will be scarce. Therefore, it is a great way to turn unusable water into usable water. In addition, calling on people to solve the problem of water use and reuse is also a way. In addition, there is water pollution prevention, which is also an important reason for water shortage.
Reason: The main reason is that water resources are limited and unevenly distributed in time and space. At the same time, it is related to water pollution, inefficient water use and waste of water resources. With the increase of population, rapid economic development and increasing demand for water resources, the situation of water resources will be more severe.
The limitation of water is as follows: water is an irreplaceable natural resource for the survival and development of human society, but the fresh water resources on the earth are limited: the total amount is limited: fresh water accounts for only 2.53% of the global water; Direct utilization is limited: the effective freshwater resources used by human beings every year are 9000 cubic kilometers, accounting for only 0.3% of the total freshwater.
Distribution problems can be seen in geography books, mainly divided into uneven distribution in time and space. The time is mainly due to the relatively concentrated rainfall, which makes the flood difficult to use, and the spatial distribution reflects the regional differences of water resources.
Pollution and waste are obvious to all.
Solution: I think the total amount of water resources should remain unchanged. There are four main reasons for water shortage:
1, industrial water, should be the main water use. Excessive water intake broke the balance of groundwater and produced a series of chain reactions.
2. The destruction of forest greening in countries below developing countries should be more serious, resulting in poor soil water retention and even desertification.
3. Greenhouse effect. I think heavy industry and automobile exhaust are the main factors, which lead to climate warming, melting glaciers, affecting the supply of rivers and indirectly affecting the supply of water resources in the middle and lower reaches.
4. With the destruction of the environment, there are more and more sudden and concentrated disasters, and the contrast between meteorology and climate is getting bigger and bigger, which leads to more and more extreme situations such as rainstorm, flood, drought and water shortage.
Second, solve the problem of water resources
1. Seawater desalination is not a solution, but a way of taking water, which fundamentally solves the problem of water resources. In essence, it is necessary to strengthen environmental protection and environmental restoration, so that * * * can truly be green and concerned about the environment, instead of engaging in image projects and achievements projects centered on cities.
2. Strengthen water-saving awareness through price and * * *. Seize the "big customers" of water use and truly implement the water-saving work, instead of shouting explosion every day like managing coal mines.
3. Strengthen sewage treatment.
4. Making full use of rainfall and river water sources is more cost-effective than seawater desalination in terms of technology and cost. However, the South-to-North Water Transfer Project is flashy and costly. At least, I think it's useless. If such a project is used as a poll, I will definitely oppose it.
Gansu province: * * should bear the responsibility of increasing ecological water use; Water price should reflect the change of water scarcity; Control agricultural irrigation area; It is necessary to develop collective or private water supply enterprises with the residents' water association as the carrier; It is necessary to adjust the water structure from the transaction of water rights; It is necessary to observe and study the negative effects of water-saving technology. It is very uneconomical to transfer water to grow grain. It is better to adjust grain directly than to adjust water to grow grain.
Evaluation of water resources in Gansu Province: According to the data of Gansu Provincial Water Resources Department, the average water resources in Gansu Province for many years is 29.4 billion m3, and the per capita water resources are 1 150 m3, which is half of the national average and ranks last among all provinces and cities in China. The per capita water resources in the Yellow River Basin are only 750m3. Therefore, it is considered that water resources in Gansu are very scarce. Through comparative analysis, although the amount of water resources in Gansu Province is not much, it should be said that there are still two keys: first, we should choose the appropriate economic development direction according to the actual situation of drought and water shortage; Second, we should strengthen the protection of precious water resources, including soil and water conservation and water pollution prevention and control. At this time, if you realize ... >>
Question 8: What is the reason for the shortage of water resources in North China? 1. Water resources themselves are relatively scarce.
2. The industrial level is relatively developed, the population is dense, and the demand for water resources is large.
Question 9: What is the root cause of water shortage? Overfarming and grazing lead to soil erosion.
Unreasonable development and utilization of water resources
Climatic reasons, such as living in the depths of the inland, water vapor can not reach.
I hope I can help you.
Question 10: The main reasons for the shortage of water resources in northern China First of all, the semi-humid areas in China mainly come from the northern region. . Semi-humid areas are mainly temperate monsoon and continental climate. . There is less precipitation. . Winter is cold and dry. . . Secondly, the uneven spatial distribution of water resources also makes the water resources in semi-humid areas tense. . . The northern part of China is basically a plain and hilly area, and agriculture is relatively developed, but the method of agricultural water use is very wasteful; The developed heavy industries in the north use more water. . . Industrial pollution has aggravated the shortage of water resources. . . The large population and large water consumption are also a reason for the shortage of water supply. The reason why it is located in semi-humid area is that its precipitation is less than that in the south, and the river network in the south is dense, while the rivers in the north are far less than that in the south, with small flow. . Have a nice day!