Who can give me some examples of "human activities have a good impact on the ecological environment"

Man strives to protect the environment.

France began to pay attention to urban car pollution.

1in April, 1996, the French government put forward a plan to combat urban pollution, which put the right of citizens to "breathe air that is harmless to health" in a sacred position.

Cars driving in the center of France have caused as much public outrage as in London, and the first people to stand up for cars are shops and other business people, because they are worried that restricting the use of cars will make them lose customers.

The authorities took measures because they were worried that the air quality would decline in summer and autumn. The French public is worried that the air pollution in summer and autumn is more serious than that in London and Rome, and the diesel exhaust valve has endangered the survival of some suburbs. The measures proposed by the government are to stipulate that municipal councils must monitor air quality and inform the public, formulate regional plans and targets for air purification, allow local traffic restrictions when predicting that air pollution reaches an intolerable level, and re-study "the role of cars in metropolises with a population of more than 250,000". Most of them will take effect before 1998.

Although the bill is far from public expectations, it is still the beginning of France. Over the years, France has lagged behind many Nordic countries in accepting "shocking" issues. The recycling industry is relatively underdeveloped. Until recently, air quality has not become a problem.

Best pollution control demonstration city in the United States

The air pollution in Chattanooga, Tennessee, once reached a very serious level, and the residents of this city could not see the Appalachian Mountains. The federal government lists this city as the dirtiest city in America.

After a lapse of 30 years, the air quality of this city with a population of 450,000 has reached the standards issued by the US Environmental Protection Agency, and it has been praised by the international community as the best example of pollution control in the United States. At the city meeting that opened on June 3rd, the United Nations expressed its appreciation for the pollution control plan of Chattanooga. The city's pollution control plan includes: developing natural resources, expanding the area of green space and pedestrian precincts, establishing an electric bus system, and starting to implement housing construction plans that are beneficial to the environment.

City Councillor David crockett said: "From the beginning, we clearly realized that the government alone could not achieve the goal of controlling pollution, so we invited the public and private sectors to participate in the efforts to control urban pollution." One of the main topics of the urban conference held under the auspices of the United Nations is how to promote pollution control measures in Chattanooga.

New technology of turning garbage into "coal cake"

Lin Deman, a machine manufacturer in Dü sseldorf, invented waste recycling technology. The main equipment of the new technology is the garbage press, which changes the molecular structure of garbage through high pressure and friction heat generation. After mechanical and high temperature treatment, the high plastic content in garbage (such as broken old car parts) can be turned into "coal cakes". As recycled materials, these "briquettes" can be used in blast furnaces or cupola, as well as garbage incineration equipment or storage, and will not pollute the environment.

The practice of briquette pressing can reduce the amount of garbage to 1/7 in the past, and briquette can continue to be processed into particles or powder. The "coal powder" made of this "coal cake" can replace the real coal powder, and its calorific value is equivalent to that of lignite.

Operation method: the double-screw press is filled with light garbage, which is left after the crusher recovers metal. These rubbish include rubber, glass, nutrients, car cushions, foam plastics, door and window guards, dirt and so on. When these things are processed in the press, they not only play a repressive role, but are completely mixed together. In this way, these things have reached the same ignition point.