What is the environmental pollution in China?

Question 1: What are the environmental pollution problems in China? In recent decades, the ecological and environmental problems in China have become increasingly prominent. In agriculture, with grain as the key link, deforestation, grazing and reclamation, land reclamation around lakes and reclamation planting have been promoted, resulting in the destruction of forests, grasslands and other vegetation, intensified soil erosion, reduced wetlands, soil degradation and desertification, desertification and salinization; The abuse of chemical fertilizers and pesticides leads to the decline of land function and the inability of plants to survive. In industry, a lot of waste water, waste gas and waste residue are discharged without effective standard treatment, which destroys the natural form of the whole environment. In terms of urban construction, the layout is chaotic, and industrial areas are mixed with residential areas and commercial areas, which artificially destroys the zoning function. In the resource industry, blind mining of mines, deforestation and extinction of rare and endangered wild animals and plants have destroyed the biological chain, resulting in the failure to protect biodiversity, which has made the ecological and environmental problems in China reach a crisis level and become an important factor restricting economic development and affecting social stability.

Question 2: Which environment in China is polluted? At present, the prominent environmental pollution problems in China mainly include air pollution, water pollution in rivers, lakes and reservoirs, and ecological damage problems such as soil erosion, land degradation, desertification, wetlands, grasslands and natural forests are decreasing. Although China's environmental protection has made great progress in recent years, some environmental quality deterioration trends have been alleviated to some extent, and the environmental situation is still very grim. In the face of large-scale environmental problems, China's monitoring and research methods are basically at the conventional level, which can not meet the needs of environmental protection development in terms of timeliness and understanding.

Question 3: What major measures have China taken to control environmental pollution in recent years? First, the task of pollution reduction was overfulfilled and the environmental quality continued to improve. During the "Eleventh Five-Year Plan" period, when the economic growth rate and total energy consumption exceed the planning expectations, the target of reducing sulfur dioxide emissions will be achieved one year ahead of schedule, and the target of reducing chemical oxygen demand will be achieved six months ahead of schedule. According to the preliminary calculation, the national chemical oxygen demand emission in 20 10 is about 12% lower than that in 2005.

Second, the construction of environmental infrastructure has advanced by leaps and bounds. In the 11th Five-Year Plan, a total of 500 million kilowatts of coal-fired power plants have been built and operated, and the proportion of thermal power desulfurization units in China has increased from 12% in 2005 to 80%. The new sewage treatment capacity exceeded 50 million tons/day, and the national urban sewage treatment rate increased from 52% in 2005 to over 75%. Sewage treatment plants have been built in Henan, Jiangsu, Zhejiang, Guangdong and other provinces and counties, and Ningxia took the lead in starting the construction of sewage treatment plants in counties and counties in northwest China.

Third, the elimination of backward production capacity is unprecedented. Eleventh Five-Year Plan, give full play to the role of pollution reduction mechanism, shut down more than 70 million kilowatts of small thermal power units, and complete the task of shutting down 50 million kilowatts one and a half years ahead of schedule; Eliminate backward ironmaking capacity 1. 1 100 million tons, steelmaking 68.6 million tons, cement 330 million tons, coke 93 million tons, paper 7.2 million tons, alcohol 1.8 million tons, monosodium glutamate 300,000 tons and glass 38 million weight boxes.

Fourth, the environmental quality continued to improve. In 2009, the average concentration of permanganate index in national surface water control sections was 5. 1 mg/L, which was 29% lower than that in 2005. The proportion of national control sections in seven major water systems that were better than Grade III water quality increased from 4 1% in 2005 to 57%. The average annual concentration of SO2 in urban air in China is 0.035 mg/m3, which is 17% lower than that in 2005, and that in key cities of environmental protection is 0.046 mg/m3, which is 24.6% lower than that in 2005. The proportion of cities at or above the prefecture level meeting or exceeding the secondary air quality standard has increased significantly, reaching 79.6%.

Question 4: What are the main environmental problems in China? 1. Air pollution.

China's sulfur dioxide emissions rank first in the world. Air pollution is the biggest environmental problem in China at present.

2. Water pollution problem

The pollution levels of the seven major water systems in China are: Liaohe River, Haihe River, Huaihe River, Yellow River, Songhua River, Pearl River and Yangtze River, among which 42% of the water quality exceeds Class III standard (can not be used as drinking water source), and 36% of the urban river sections in China are inferior to Class V water quality, which has lost its use function. The water quality of large freshwater lakes (reservoirs) and urban lakes is generally poor, and the eutrophication of more than 75% lakes is intensified, mainly caused by nitrogen and phosphorus pollution.

3. Garbage disposal problem

At present, the comprehensive utilization rate of industrial solid waste in China is about 46%. Less than 10% of municipal solid waste in China meets the requirements of harmless treatment. White pollution caused by plastic packaging and agricultural film has spread all over the country.

4. Land desertification and sand disaster

Desertification land accounts for 27.3% of the total land area in China, and the desertification area is increasing at the rate of 2,460 square kilometers per year.

6. Drought and floods

In the past 500 years, there have been 53 major floods in the Yangtze River basin, but in the past 50 years, there has been a major flood every three years, and the flood of 1998 has caused huge economic losses.

7. Destruction of biodiversity

China is a country whose biodiversity has been seriously damaged. There are 4000 ~ 5000 endangered species in higher plants, accounting for 15% ~ 20% of the total species in China, which is higher than the world average 10% ~ 15%. The phenomenon of indiscriminate hunting and indiscriminate killing of wild animals and large-scale predation of wild animals in China is still very serious and has been repeatedly banned.

8. WTO accession and environmental issues

China's entry into WTO will face two new environmental problems. On the one hand, it is the international "green trade barrier". On the other hand, the international market demand for China's minerals, stones, medicinal plants, agricultural products and livestock products has intensified the destruction of China's ecology, environment and natural resources. At the same time, China may become a place where foreign pollution-intensive enterprises transfer and a large number of foreign industrial wastes are processed with materials, which will greatly aggravate the environmental problems in China.

9. Environmental problems in the Three Gorges reservoir area

The Three Gorges Project is a huge water conservancy project being implemented in China. The impact on geological environment, water resources environment and ecological environment (involving both sides of the reservoir area and the whole upstream area) and how to effectively prevent pollution in the reservoir area are major issues facing the builders of the Three Gorges at present.

10. Persistent organic pollutants

With the development of China's economy, persistent organic pollutants that are difficult to degrade began to appear. In China, banned persistent organic pollutants are often detected in environmental media. This kind of organic pollutants have the characteristics of being passed on to the next generation, and its harm will not appear until many years later. Also called "environmental hormone" or "environmental hormone", it is very harmful.

Question 5: What are the words 150 about environmental pollution in China? Air pollution mainly refers to smog pollution and toxic gas pollution. It is easy to cause diseases such as lung cancer.

Water pollution: The main reason is that the wastewater discharged from various factories is discharged into rivers, resulting in the death of fish and the extinction of organisms, and the drinking water for human beings is not installed at the same time.

Soil pollution: refers to all kinds of garbage chemicals buried in the soil, causing soil pollution.

Environmental pollution: all kinds of noise pollution and light pollution,

In order to prevent pollution, it is suggested that we start from ourselves, don't litter, don't spit, don't smoke, try not to drive, take public transportation, take care of the environment, plant trees and take care of flowers and plants. Only in this way can our environment get better and better. Everyone lives in green and the world is blue every day! ! ! ! ! !

Question 6: What are the current environmental problems in China? 1. Air pollution.

In 2000, China's sulfur dioxide emissions were19.95 million tons, ranking first in the world. According to experts' calculations, in order to meet the environmental capacity requirements of the national weather, sulfur dioxide emissions should be reduced by at least 40% on the existing basis. In addition, in 2000, the national soot emission was11650,000 tons, and the industrial dust emission was10.92 million tons. Air pollution is the biggest environmental problem in China.

2. Water pollution

The pollution levels of the seven major water systems in China are: Liaohe River, Haihe River, Huaihe River, Yellow River, Songhua River, Pearl River and Yangtze River, among which 42% of the water quality exceeds Class III standard (can not be used as drinking water source), and 36% of the urban river sections in China are inferior to Class V water quality, which makes them useless. The water quality of large freshwater lakes (reservoirs) and urban lakes is generally poor, and the eutrophication of more than 75% lakes is intensified, mainly caused by nitrogen and phosphorus pollution.

3. Garbage disposal problem

The annual output of industrial solid waste in China reaches 820 million tons, and the comprehensive utilization rate is about 46%. The annual output of municipal solid waste in China is 65.438+0.4 billion tons, which is less than 654.38+00% of the requirement of harmless treatment. White pollution caused by plastic packaging and agricultural film has spread all over the country.

4. Land desertification and sand damage.

At present, the desertification land in China accounts for 27.3% of the total land area, and the desertification area is increasing at the rate of 2,460 square kilometers per year. The severe sandstorm weather in China increased from 5 times in 1950s to 23 times in 1990s. Land desertification led to the forced migration of residents in some areas of Inner Mongolia.

5, soil erosion problem

The total amount of soil lost in China is more than 5 billion tons each year, and the annual loss of soil nutrients is 40 million tons of standard chemical fertilizers (equivalent to the annual use of chemical fertilizers in China). Since 1949, the total cultivated land destroyed by soil erosion in China has reached 40 million mu, which is a huge loss of agriculture in China.

6. Drought and floods

In 1950s, the average annual farmland affected by drought in China was 65.438+0.2 billion mu, which rose to 380 million mu in 1990s. The Yellow River was cut off for the first time in 1972, and it has been cut off every year since then. In 1985, the number of cut-off days reached 227 days. According to the survey, experts predict that the drought in China will continue in the next 15 years. However, the frequency of floods in the Yangtze River basin has increased significantly. In the past 500 years, there have been 53 major floods in the Yangtze River basin, but in the past 50 years, there has been a major flood every three years, and the major flood of 1998 has caused huge economic losses.

7. Destruction of biodiversity.

China is a country whose biodiversity has been seriously damaged. There are 4000-5000 endangered species in higher plants, accounting for 15%-20% of the total species in China, which is higher than the world average 10%- 15%. "National time" at the United Nations? What happened to the muscle? Among the 40 endangered species in the world, there are 156 species in China, accounting for14 of the total. The phenomenon of indiscriminate hunting and indiscriminate killing of wild animals and large-scale predation of wild animals in China is still very serious and has been repeatedly banned.

8. WTO and environmental issues

China's entry into WTO will face two new environmental problems. On the one hand, it is the international green trade barrier. Because China's current environmental protection standards are generally lower than those of developed countries, the products of China's food, electromechanical, textile, leather, ceramics, tobacco, toys, shoes and other industries will be restricted in export trade. On the other hand, the huge demand for China's minerals, stones, medicinal plants, agricultural products and livestock products in the international market may aggravate the destruction of China's ecology, environment and natural resources. At the same time, China may become a place where foreign pollution-intensive enterprises are transferred and a large number of foreign industrial wastes are treated, which will greatly aggravate the environmental problems in China.

9. Environmental problems in the Three Gorges reservoir area

The Three Gorges Project is a huge water conservancy project being implemented in China. The project is scheduled to start power generation in 2003. The impact of the completion of the Three Gorges Project on the geological environment, water resources environment and ecological environment (involving both banks of the reservoir area and the whole upstream area) and how to effectively prevent and control the pollution in the reservoir area are major issues facing the builders of the Three Gorges Project at present. The Three Gorges Project has become an environmental problem attracting worldwide attention.

10, persistent organic pollutants

With the development of China's economy, persistent organic pollutants that are difficult to degrade begin to appear. The international community signed the Stockholm Convention on Persistent Organic Pollutants this year, in which the first batch of 12 persistent organic pollutants were identified as prohibited substances. & gt