500 words suggestions on prevention and control of haze weather

This 500-word smog weather prevention proposal is written like this:

In recent years, with the acceleration of urbanization and the expansion of industrial scale, environmental pollution has become increasingly serious, among which smog weather has become a prominent problem affecting the quality of urban life. In order to protect our ecological environment and make our city better, we launched this proposal, hoping to get a positive response from the general public.

1, improve environmental awareness, let us realize the harm of smog weather, which not only affects our health, but also causes long-term damage to the environment. Let's start from ourselves, improve environmental awareness, pay attention to air quality and protect our living environment.

2, green travel, in daily life, try to choose public transportation, cycling or walking, reduce the use of private cars. This can not only reduce automobile exhaust emissions, but also alleviate urban traffic congestion.

3, reduce outdoor activities, in the case of severe haze weather, try to reduce outdoor activities, especially children, the elderly and other sensitive people. If you need to go out, you should wear a protective mask and pay attention to respiratory hygiene.

4. Promote clean energy, actively support the development of clean energy, and encourage the use of renewable energy such as solar energy and wind energy. At the same time, reduce the use of coal and fuel oil and reduce pollutant emissions.

5. Participate in environmental protection actions, join environmental protection organizations or volunteer teams, and participate in environmental protection actions. Through publicity and education, afforestation, garbage sorting and other forms, we will contribute to improving air quality.

6. Strengthen government supervision and call on the government to increase investment and management in environmental protection work and formulate stricter environmental protection regulations and standards. At the same time, strengthen the supervision of enterprises and strictly control pollution emissions. Let's work together to contribute to the prevention and control of haze weather.

Harmfulness:

The main pollutants in the atmosphere include particulate matter, SO2, NO2 and O3. First of all, let's take a look at the health effects of particulate matter that causes haze weather. The particle size determines whether the particle can enter the human body through the respiratory tract. At the same time, due to different particle sizes, the deposition position and retention of particles in the respiratory tract are also different, which in turn affects the health of particles to varying degrees.

Particles larger than 10μm are not easy to enter the respiratory tract. Particles with a particle size of 5- 10μm are mostly deposited in the upper respiratory tract. Particles with a particle size of 2.5-5μm are mostly deposited in bronchioles and alveoli; 75% of particles below 2.5μm are deposited in alveoli; However, particles smaller than 0.4μm can freely enter and exit the alveoli and be excreted with respiration, so they are less deposited in the respiratory tract.