Extended data:
The environmental situation in China is 1, and the air pollution belongs to soot pollution, among which dust and acid rain are the most harmful, and the pollution degree is getting worse. 2. Acid rain is mainly distributed in the south of Yangtze River, east of Qinghai-Tibet Plateau and Sichuan Basin. Acid rain pollution is the most serious in central China. 3. The water in rivers, lakes and reservoirs is generally polluted to varying degrees. Except for some inland rivers and large reservoirs, pollution is increasing, especially in the waters near industrially developed towns. 4. Among the seven major water systems (Pearl River, Yangtze River, Yellow River, Huaihe River, Hailuan River, Liaohe River and Songhua River), the Yellow River Basin, Songhua River and Liaohe River Basin are seriously polluted by water. 5. The pollution of total phosphorus and total nitrogen in large freshwater lakes is extensive and eutrophication is serious. 6. The Bohai Sea and the East China Sea are seriously polluted, while the South China Sea is relatively light. 7. The deterioration of the ecological environment in fishery waters has not fundamentally changed, and there is an increasing trend. Baidu Encyclopedia-Environmental Protection Editor checked all the answers on10/24, 2020.
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What are the environmental problems around us that endanger people's health? 1. air pollution: the phenomenon that some substances enter the atmosphere due to human activities or natural processes and show sufficient concentration in a sufficient time, thus endangering human comfort, health and welfare or the environment; The impact of air pollution on human body is firstly uncomfortable, then the physiological reversible reaction, and then the acute harmful symptoms. The harm of air pollution to people can be roughly divided into three types: acute poisoning, chronic poisoning and carcinogenesis. 2. Water pollution: Water pollution is water that pollutes the environment because harmful chemicals reduce or lose the use value of water; Water pollution affects industrial production, increases equipment corrosion, affects product quality, and even makes production impossible. Water pollution affects people's lives, destroys ecology, directly harms people's health and causes great damage. 3. Noise pollution: From a physiological point of view, any sound that interferes with people's rest, study and work, as well as the sound you want to hear, that is, the unwanted sound, is collectively called noise. When noise has a bad influence on people and the surrounding environment, noise pollution is formed. 4. Solid waste pollution: People living in the environment can directly ingest harmful waste from the respiratory tract, digestive tract or skin through the media such as the atmosphere, water and soil, causing diseases. 5, computer radiation: radiation is not the number one factor leading to hair loss. Using the computer for too long is the key to hair loss: if you concentrate on using the computer for too long, your brain will be more excited and your endocrine will be disordered. Sebaceous glands connected with hair follicles will secrete too much, leading to hair follicle embolism, blocked hair nutrition supply, brittle hair and hair loss. For slight hair loss, it can be alleviated by reducing computer use time and adjusting lifestyle. 8 like 640 to browse 2020- 10-28
What are the environmental problems around us and what are the hazards to people's health? 1, air pollution air pollutants do harm to human body in many ways, mainly in respiratory diseases and physiological dysfunction, as well as irritation to mucous membranes such as eyes and nose. 2. Water Pollution If you drink polluted water pollutants, they will enter our bodies, causing acute or chronic poisoning and various infectious diseases. The atmospheric environment in China is facing a very severe situation, and the total amount of air pollutants discharged remains high. 20 1 1 year, the annual emission of sulfur dioxide in China is as high as18.57 million tons, dust1/kloc-0.59 million tons, industrial dust1/kloc-0.75 million tons, and the air pollution is still very serious. The atmospheric environmental quality of most cities in China has exceeded the national standards. Among the 47 key cities in China, more than 70% of the cities' atmospheric environmental quality can't meet the second-class standard stipulated by the state. Among the 338 cities participating in environmental statistics, there are 137 cities whose air environmental quality exceeds the national third-class standards, accounting for 40% of the statistical cities, which are seriously polluted cities. Air pollution is the biggest environmental pollution problem in China. 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 no use value. The water quality of large freshwater lakes (reservoirs) and urban lakes is generally poor. The Yellow River has been cut off for many times, and more than 75% of the lakes are more eutrophic, which is mainly caused by nitrogen and phosphorus pollution. Baidu Encyclopedia-Top Ten Environmental Problems in China 23 Like 2806 Browse 2020- 10-29
What are the environmental problems around us and what are the hazards to people's health? 1, noise hazards affect sleep quality. Studies have shown that noise of 40 ~ 50 decibels will interfere with sleep. 40 decibels of sudden noise can wake up 10% people, and 60 decibels can wake up 70% people. When the continuous noise reaches 70 decibels, it will affect 50% people's sleep. 2. Hazards of air pollution The hazards of air pollutants to human body are manifold, which are manifested as respiratory system damage, physiological dysfunction, digestive system disorder, nervous system abnormality, mental decline, carcinogenesis and disability. People call the smoke of this disaster "the smoke of killing". When the concentration of pollutants in the atmosphere is high, it will cause acute pollution poisoning, or aggravate the symptoms, and even kill thousands of people within a few days. In fact, even if the concentration of pollutants in the atmosphere is not high, breathing this polluted air all the year round will cause chronic bronchitis, bronchial asthma, emphysema, lung cancer and other diseases. Extended data:
Prevention and control methods 1. Toxic gases such as sewage, waste gas, waste smoke and waste residue in the factory are filtered and discharged. 2. Try not to use private cars when going out to reduce the environmental pollution caused by automobile exhaust emissions. 3, do not use disposable tableware, save paper. 4. Variety of flowers and trees, don't cut down trees. References:
People's Network-The killer harm of noise to human health is second only to air pollution;
Baidu Encyclopedia-Environmental Pollution 17 Like 4,650 Browse 2020- 10-26
What are the environmental problems around us and what are the hazards to people's health? The most direct and easily felt consequence of environmental pollution is to reduce the quality of human environment and affect the quality of human life, physical health and production activities. Environmental problems: 1, resource destruction, excessive consumption of various mineral resources by human beings. According to the traditional consumption calculation, the world oil can only last for 50 years, and coal and natural gas can only be mined for 200-300 years. 2. Ecological Destruction In recent 50 years, due to over-exploitation by human beings, more than half of the global forest resources have been lost, the degree of desertification has intensified, and a series of problems such as land degradation have intensified. Nature has been severely damaged, and the function of ecosystem has weakened, which has affected the survival of human beings. According to FAO statistics, 2,500 square meters of forests are destroyed every minute on the earth. 3. Land Desertification The desertification land area in the world accounts for 1/3 of the world land area, which is about 48 million km? , is almost the sum of China, Indian, American and Russian territories. The main reason of land desertification is the intensification of soil erosion, such as the area of soil erosion in China is 654.38+0.5 million km? , so that a large number of chemical fertilizers flow away in vain, and the desertification land in China is176,000 km? Every year, 4 million tons of trace elements are lost, resulting in serious losses. 4. Species decrease. There are about130,000 species to140,000 species in the world. Among them, there are about 6.5438+0.7 million species that have been named by humans, and most of the existing species have not been recorded and described. According to statistics, 75 species are extinct every day and 3 species are extinct every hour in the world. Because of the food chain, every time a plant disappears on the earth, there are often 10 ~ 30 kinds of animals and microorganisms attached to it. The disappearance of each species reduces the choice of nature and human beings to adapt to the changing environment. The reduction of biodiversity will worsen the living environment of human beings, limit the choice of opportunities for human survival and development, and even seriously threaten human survival and development. 5. Sandstorms According to statistics, there were eight sandstorms in China in the 1960s, three in the 1970s, four in the 1980s and more than 20 in the 1990s. By 2 1 century, it spread more and more widely and caused more and more losses. 6. Soil erosion refers to soil erosion under the action of water flow. In the natural state, the process of surface erosion caused by natural factors is very slow, and it is often in a relatively balanced state with the process of soil formation. Therefore, the slope can remain intact. This kind of erosion is called natural erosion, also known as geological erosion. Under the influence of human activities, especially after human beings have seriously damaged the vegetation on sloping land, the process of surface soil destruction and land material movement caused by natural factors is accelerated, that is, soil erosion occurs. 7. The deterioration of the living environment is a prominent problem that industrial civilization has caused unsustainable development to mankind. 1952 London fog and haze incident, 4,000 people died in five days. Others, such as water pollution, acid rain, photochemical pollution, global warming, white garbage and land pollution, are all manifestations of destroying nature. Extended data correctly handles the relationship between environmental protection and development, which are an organic whole. We can't leave development, unilaterally emphasize the protection and improvement of the environment, and we can't blindly pursue development regardless of the bearing capacity of the ecological environment. Especially for the vast number of developing countries, only under the premise of moderate economic growth can we find ways and methods to solve environmental problems that are suitable for our national conditions. The extensive participation of developing countries is very necessary. In international environmental affairs, there is a tendency to ignore the specific difficulties of developing countries, and their voices have not been fully reflected. Therefore, it is necessary to take measures to ensure that developing countries can fully participate in international environmental activities and cooperation. Full consideration should be given to the special circumstances and needs of developing countries. Developing countries are also facing some more pressing local environmental problems, such as land degradation, desertification, forest decline, soil erosion and other natural ecological deterioration caused by lack of funds, backward technology and population growth, as well as environmental pollution, acid rain and water shortage caused by industrial development. Baidu Encyclopedia-Environmental Issues Baidu Encyclopedia-Environmental Deterioration 7 Like 1, 493 Browse 2020- 10-20
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