"People work hard" + "Heaven helps", during the Winter Olympics, the air quality in Beijing reached the best level since PM2.5 monitoring was carried out.
"Beijing Blue" became the bright background color of the Winter Olympics
Beijing News (Reporter Zhang Lu) From February 4th to 17th, the average concentration of PM2.5 in Beijing was 24 micrograms per cubic meter, and the concentration of PM2.5 in Beijing, Tianjin and Hebei dropped by more than 40% year-on-year.
Why did "Beijing Blue" become the bright background color of the Winter Olympics?
On February 18, the 2022 Beijing News Center held a special press conference for the Beautiful China Green Winter Olympics. Zhang Dawei, deputy director of the Atmospheric Environment Department of the Ministry of Ecology and Environment, explained the reason.
Monitoring data shows that from February 4th to 17th, the concentration of PM2.5 in Beijing, Tianjin and Hebei dropped by more than 40% year-on-year, and the surrounding areas fell by more than 30% year-on-year; especially on February 4th on the opening ceremony of the Winter Olympics, Beijing The concentration of PM2.5 is as low as 5 micrograms per cubic meter, and "Beijing Blue" has become the bright background color of the Winter Olympics.
This achievement is mainly due to "people's efforts" and "God's help".
Zhang Dawei summed up four reasons (below).
The good air quality during the Winter Olympics fully reflects the achievements in overcoming difficulties in air pollution control over the years.
However, Zhang Dawei also pointed out that the current total emissions of air pollutants in the Beijing-Tianjin-Hebei region are still on the high side. In the event of unfavorable meteorological conditions, the environmental capacity will be reduced, and the air quality will fluctuate.
"We need to insist that Qingshan will not relax, continue to exert efforts and work for a long time, and promote the continuous improvement of air quality, so that 'Beijing blue' and 'China blue' will always exist."
Continue to carry out air pollution control work
Since 2013, the Chinese government has successively issued and implemented the "Air Pollution Prevention and Control Action Plan" and "Three-Year Action Plan to Win the Blue Sky Defense War", making Beijing-Tianjin-Hebei and surrounding areas the national key areas for air pollution prevention and control.
In 2021, the average concentration of PM2.5 in the Beijing-Tianjin-Hebei region will decrease by 63% compared with 2013, and the number of days with severe and above pollution will decrease by 88%; and above pollution days decreased from 58 days to 8 days.
Fireworks and firecrackers are banned during the Spring Festival
Historical monitoring data shows that the concentration of fireworks and firecrackers during the Spring Festival every year will cause heavy pollution.
During the Spring Festival this year, Beijing and the surrounding 8 provinces (autonomous regions and municipalities) strictly implemented the ban on the sale, burning and release of fireworks and firecrackers. The masses actively supported and achieved good results.
"In the region, there were no high pollution values in key periods such as New Year's Eve, the first day, the fifth day and the fifteenth day of the new year, and the air quality was generally good. The average concentration of PM2.5 in Beijing decreased by more than 80% compared with the same period of last year's Spring Festival, which is all historical. The best level."
Precise implementation of regional joint prevention and control during the event
The Ministry of Ecology and Environment will work with Beijing, Hebei and other 8 provinces (autonomous regions and municipalities) to coordinate the smooth economic and social operation, energy supply, and warm winter for the people during the event. Temporary control has been established, and the measures are accurate to specific enterprises, specific processes, specific equipment and specific vehicles.
At the same time, during the Spring Festival during the Winter Olympics, some enterprises were closed for holidays, the level of social and economic activities in the region dropped significantly, and the traffic flow decreased significantly.
The comprehensive assessment shows that pollutant emissions in the region have been reduced by more than 30%, further boosting the improvement of air quality.
Weather conditions are generally favorable
During the event, Beijing's cold air activities were frequent. Compared with the same period in history, the air pressure and wind speed were higher, and the average temperature and relative humidity were lower.
Especially before and after the opening ceremony, cities such as Beijing and Zhangjiakou continued to be affected by the cold air from the north, and the atmospheric diffusion conditions were relatively good, which was conducive to the reduction of pollutant concentrations.
Beijing Winter Olympics becomes first "carbon neutral" Winter Olympics
Wang Jinnan, academician of the Chinese Academy of Engineering and dean of the Environmental Planning Institute of the Ministry of Ecology and Environment, said at the press conference that through the use of a large number of photovoltaic and wind energy power generation, local donations of forestry carbon sinks, and corporate sponsorship of certified carbon emission reductions, the Beijing Winter Olympics has become the largest The first "carbon neutral" Winter Olympics to date.
In 2017, the Nineteenth National Congress of the Communist Party of China proposed to basically realize the goal of Beautiful China by 2035.
Wang Jinnan said that in the past five years, China's green development has gradually achieved results. The proportion of coal consumption in energy consumption has dropped to about 56%, and the proportion of clean energy has risen to 25.3%. The installed capacity and power generation of photovoltaic and wind energy, and the production and sales of new energy vehicles are all ranking first in the world.
The quality of China's ecological environment continues to improve.
From 2017 to 2021, the average concentration of PM2.5 in cities at the prefecture level and above nationwide will drop by 25%, the proportion of good days will increase by 4.9 percentage points, and the number of days with heavy pollution will drop by nearly 40%. Blue sky, white clouds, and twinkling stars have become the norm.
The proportion of water bodies reaching or better than Class III rose to 84.9%, and the proportion of water bodies inferior to Class V dropped to 1.2%. The sights of clear water, green banks, and fish flying on shallow bottoms increased significantly.
According to the data observed by NASA in the United States, about 25% of the newly added green area in the world since 2000 came from China.
Green Olympic Games from concept to action, from vision to reality.
The Chinese government has fully implemented the green Olympic measures. All the venues of the Winter Olympics have reached the green building standards, and 100% of the conventional energy uses green electricity.
The energy-saving and clean energy vehicles of the Winter Olympics accounted for 84.9% of all the vehicles guaranteed during the competition, the highest in the previous Winter Olympics.
Through the use of a large number of photovoltaic and wind power generation, local donation of forestry carbon sinks, and corporate sponsorship of certified carbon emission reductions, the Beijing Winter Olympics has successfully fulfilled its commitment to achieving carbon neutrality. Neutralize the Winter Olympics.
As the "city of double Olympics", Beijing's air quality has been greatly improved.
In 2021, all six major pollutants in Beijing will meet the standards for the first time. The average concentration of PM2.5 will drop to 33 micrograms per cubic meter, a decrease of 40% compared with 2017, and the number of excellent days will reach 288, an increase of 62 days compared with 2017.
"Especially in Beijing during the Winter Olympics, the air quality has reached the best level since PM2.5 monitoring was started, and the PM2.5 concentration even appeared in single digits for a few days." Wang Jinnan said.Keywords: