Is the Yangtze River seriously polluted? Why is the Yangtze River polluted?

The discharge of pollutants along the Yangtze River is different, and the pollution near the sewage outlet is more serious, and the pollution at the remote sewage outlet is less light, or even not polluted. In addition, it is also related to the precipitation situation, which is large, and it is easy to wash land pollutants into the river, causing pollution.

Now it's serious, and if we want to avoid pollution, we can only rely on ourselves to maintain it. Love the earth and protect nature.

Severe, a lot of sediment loss,

Although the 11 provinces and cities along the Yangtze River account for only 20% of the country's area, the total wastewater discharge accounts for more than 30%, resulting in the depletion of various rich resources along the basin, so the need for environmental management of the Yangtze River is imminent.

At present, it is still possible ·· It's not very serious

The level of pollution varies from province to province along the route.

Jiang Teng of the Yangtze River is dying, do you think it's good!!

On August 25, Greenpeace International published a 24-page report entitled "Poison Hidden in the River - Investigation of Toxic and Harmful Substances in Yangtze River Fish". In addition to focusing on the discovery of a variety of harmful toxins in fish, the report also elaborates on the pollution of the Yangtze River, which receives the largest amount of wastewater in the country, and is one of the most polluted rivers in the world due to pollution from industrial wastewater, waste and heavy metals, affecting almost 400 million people in China.

Wu Lihong, known as the "guardian of Taihu Lake", talked about the root causes of pollution in the Yangtze River, the key issues in pollution control, and how to effectively and timely deal with the serious pollution of the Yangtze River, based on his experience in researching the pollution of Taihu Lake for many years.

Just look at how many chemical plants there are along the river.

Several reasons: 1. Many dams have been built on the Yangtze River (Gezhou Dam, Three Gorges, etc.), which has changed the local ecological environment.

2. Indiscriminate deforestation in ethnic minority areas in western Sichuan has destroyed vegetation and led to soil erosion.

3. Industrial and pesticide pollution in the watershed.

4. Global warming has led to an increase in glacial meltwater upstream.

It should be Haihe. The Yangtze River with a total length of more than 6,300 miles, the pollution is mainly concentrated in the downstream part, that is, the Yangtze River Delta region, where there are many factories, and the sewage discharge is relatively large (now it has been curbed), but the Yangtze River basin has a wide area and strong self-purification ability, so that the water quality has always been maintained in the national three-class water standard, but this is only the water quality of the lower reaches of the Yangtze River. The reason why the Yangtze River basin has a strong self-purification ability is because it has a huge glacier as the source and a large number of mountain tributaries with complex topography in the upper reaches to provide clean water supply, so that the Yangtze River has been flowing into the sea continuously from ancient times to the present! The vast water of the Yangtze River feeds the rivers and lakes along the way, interacting with them... …In 08, the water body of Taihu Lake located in the center of the Yangtze River Delta was seriously polluted, and the eutrophication of the water body of Taihu Lake cyanobacteria broke out.

Over the years, various cities in the Yangtze River Delta region have successively set up the water intake of urban drinking water, that is, tap water, in the Yangtze River, and drinking the Yangtze River water has almost become a common wish of everyone! The continuous flow of water from the Yangtze River has nurtured Chinese civilization for 5,000 years.

In contrast, the Haihe River basin is small in size and has a weak self-purification capacity, but the pollution of industrial life is increasing year by year, and if it is not treated, it will become the next Pearl River or Huai River.

With superior natural conditions and a long history, the Yangtze River Basin is one of the regions with a high level of economic development and urbanization in China, with the total economic volume of the basin accounting for more than 50 of the total economic output of the country, 186 cities in the basin, and 4 megacities with a population of more than 2 million.

According to Lu Jianjian, a member of the National Committee of the Chinese People's Political Consultative Conference (CPPCC) and a professor at East China Normal University, and other relevant experts, the total annual sewage discharge in the Yangtze River basin is more than 25 billion tons, accounting for more than 40 percent of the country's total, of which more than 80 percent of the sewage is directly discharged into the Yangtze River without effective treatment. At present, 60 of the water bodies in the main stream of the Yangtze River have been polluted to varying degrees, and the water quality along the thousands of kilometers of the middle and lower reaches of the Yangtze River, which is relatively densely populated by industry, is basically between Class III and Class IV. Shanghai, which is located at the mouth of the Yangtze River, can only get three types of water as the drinking water source of Shanghai in the area of Changxing Island in the center of the river.

In addition, the pollution of some tributaries of the Yangtze River and the eutrophication of lakes in the basin are also prominent. According to data provided by the State Environmental Protection Administration, only 46 of the 72 monitored sections on the 38 main streams of the Yangtze River can achieve more than three types of water quality. At the same time, more than half of the more than 4,000 lakes in the Yangtze River basin with an area of more than 0 5 square kilometers have also been in different degrees of eutrophication, among which Hangzhou West Lake, Nanjing Xuanwu Lake, Wuhan East Lake, etc., have reached the degree of eutrophication.

The first is the pollution of industrial wastewater and domestic sewage. Wastewater from industrial and mining enterprises and urban domestic sewage are one of the main sources of pollution in the Yangtze River Basin. According to the statistics of the State Environmental Protection Administration, in 2003, the total amount of wastewater discharged in the Yangtze River basin reached 16.39 billion tons, of which 7.25 billion tons were discharged from industrial wastewater and 9.14 billion tons from domestic sewage. The total discharge of chemical oxygen demand (COD) was 48.14 million tons, including 1.318 million tons of industrial wastewater and 346.6 million tons of domestic sewage.

Second, agricultural non-point source pollution is serious. It mainly includes: chemical fertilizers, pesticides, livestock and poultry breeding, agricultural solid waste, rural domestic sewage and runoff pollution in mountain and forest areas.

According to the estimates of the State Environmental Protection Administration, the total amount of agricultural non-point source pollutants in the Yangtze River basin is comparable to the total amount of pollutants emitted from point sources such as industry and urban life.

The third is the surge in shipping volume, which has brought about a large amount of ship pollution. The Yangtze River is the main artery of water transport that runs through the east and west of China, and the shipping industry is very developed, with 210,000 ships operating on the water all year round, and these ships discharge 360 million tons of oily wastewater and domestic sewage and 750,000 tons of domestic garbage into the Yangtze River every year. In addition, oil and chemical pollution incidents caused by sea damage accidents also occur from time to time, posing a great threat to the water environment of the Yangtze River.

In short, everything is to the fault of humanity.

It will cause the surrounding vegetation and organisms to mutate and die, including humans, and the environment will choose the territory again, or become another Jedi.

Water pollution can affect groundwater.