What are the harms of environmental pollution to China?

The harm of haze: Winter fog is known as the "winter killer", coupled with pollutants such as industrial exhaust gases, automobile exhaust fumes, dust in the air, bacteria and viruses in the air, attached to water droplets, and these substances will have an impact on the human respiratory tract in people's daily life and travel. May cause acute respiratory infections.

cold), acute bronchitis.

Pneumonia and asthma attacks, inducing or aggravating chronic bronchitis, etc. In particular, the mucous membranes of the nasal, trachea, and bronchi are tender and the alveoli are soft.

The number is smaller, the elastic fibers are poorly developed, the interstitium is vigorously developed, and it is more susceptible to respiratory virus infection.

Desertification. Dangers of desertification:

1) Desertification is particularly harmful to agriculture, every spring sowing season, desertification areas will lead to seeds and fertilizers being blown away, seedlings being uprooted, and soil water being dispersed and lost. In some places, it is necessary to remedy it repeatedly, and even miss the agricultural time.

2) The degradation of grassland caused by desertification has gradually reduced or even completely lost the dominant grass species suitable for livestock consumption.

3) Desertification causes blockages of rivers, reservoirs and canals.

Water pollution. Hazards of Water Pollution:

1) Endangering human health. Through drinking water or the food chain.

Contaminants enter the human body and can cause acute or chronic poisoning. Among them, arsenic, chromium, ammonium, B benzo(a)pyrene, etc., can also induce cancer.

2) Harm to industry and agriculture. Industrial water must be treated more expensively, resulting in a waste of resources and energy. The food industry has stricter water requirements, and substandard water quality will bring production to a standstill. This is also a factor that the efficiency of industrial enterprises is not high and the quality is not good.

3) Cause eutrophication of water, make a large number of aquatic plants die, the water surface is blackened, and the water body stinks to form "dead lakes", "dead rivers", "dead seas", and then turn into swamps, and can also lead to red tides.

Phenomenon. Lucid waters and lush mountains are invaluable assets.

Therefore, when development contradicts the environment, we should not blindly choose development, but should also consider the harm it brings to the environment while pursuing development. We must truly achieve not only gold and silver, but also green waters and green mountains. New.

It can damage ecosystems and flora and fauna.

The hazards of environmental pollution mainly include:

1. Marine pollution: due to the damage to the environment, coupled with the discharge of some domestic wastewater into the ocean in human production activities, the marine water resources have been seriously polluted;

2. Urban environment: If some garbage and other objects in urban life cannot be reasonably arranged, it may cause unnecessary impact on the urban environment;

3. Raise the temperature of the atmosphere: due to the industrial production, a large amount of waste heat is discharged into the air, which will make the temperature of the city higher than the temperature of the suburbs;

4. Human health: people mainly breathe oxygen in the air, if the pollutants in the air increase, people will inhale these pollutants into the body when breathing, so it will have a greater impact on health;

5. Plant impact: When the concentration of pollutants increases, it will cause chronic harm to plants, cause lesions on the surface of plants, or make the leaves of plants fall off. When the concentration of pollutants is not too high, it will cause the leaves of the plant to fade, thus affecting the quality of the plant;

6. Animal impact: The impact of environmental pollution on animals is still relatively large, for example, when the water source is polluted, the health of animals will also have a certain impact;

7. Climate impact: environmental pollution may increase the amount of substances in the atmosphere, thereby causing global warming, resulting in a series of harms, such as glacier melting, sea level rise, etc.;

8. Increase precipitation: In environmental pollution, a lot of particulate matter will be produced, which can condense water vapor, thereby increasing the amount of precipitation in the atmosphere;

9. Noise pollution: In fact, the scope of environmental pollution is relatively wide, including noise pollution, which will affect people's normal rest.

What are the hazards of environmental pollution, environmental problems are closely related to human health, and when it is serious, it will affect the air we breathe and the water we drink, so we must do a good job in every step of environmental pollution prevention.

1. Environmental pollution will cause direct damage and impact on the ecosystem, such as desertification and forest destruction.

2. It will also cause indirect harm to human society, such as the greenhouse effect, acid rain, and ozone layer destruction.

3. The most direct and easily felt consequence of environmental pollution is to reduce the quality of the human environment.

4. Air pollution affects the quality of human life, causing air pollution and increasing people's morbidity.

5. Water pollution deteriorates the quality of the water environment, and the quality of drinking water sources generally declines, threatening people's health.

The most direct and easily felt consequence of environmental pollution is to reduce the quality of the human environment and affect the quality of human life, physical health and production activities. For example, air pollution in cities causes air pollution, and people's morbidity increases. Water pollution deteriorates the quality of the water environment, and the quality of drinking water sources generally declines, threatening people's health, causing premature birth or malformation of the fetus. Serious pollution incidents not only cause health problems, but also social problems.

With the intensification of pollution and the improvement of people's environmental awareness, the disputes and conflicts among people caused by pollution are increasing year by year. Due to the lack of anticipation and prevention of the negative impact of highly developed industry, it has led to three major crises around the world: resource shortage, environmental pollution, and ecological destruction.

Human beings are constantly emitting pollutants into the environment. However, due to the effects of diffusion, dilution, redox, biodegradation, etc. of the atmosphere, water, soil, etc. The concentration and toxicity of pollutants naturally decrease, a phenomenon called environmental self-purification.

If the emitted substances exceed the self-purification capacity of the environment, the quality of the environment will undergo adverse changes, endangering human health and survival, which will cause environmental pollution. At present, environmental pollution problems have occurred to varying degrees in the world, and the aspects with global impact include atmospheric environmental pollution, marine pollution, and urban environmental problems. With the globalization of the economy and the world, environmental pollution is also increasingly internationalized, and the transboundary transfer of hazardous wastes in recent years is a prominent manifestation in this regard.