Latest News:  
Beijing   Sunny/Cloudy    2 / -7   City Forecast

People's Daily Online>>China Society

Beijing reaches annual "blue sky days" target

(Xinhua)

09:39, December 18, 2011

BEIJING, Dec. 17 (Xinhua) -- As of Sunday, Beijing has enjoyed 274 days of "blue sky" in 2011, fulfilling its annual target ahead of schedule, an official with Beijing's Municipal Environmental Protection Bureau said Sudnay.

Beijing has seen an overall decline in the concentration of various pollutants in 2011, said Zhuang Zhidong, deputy director of the bureau.

The PM10, or particular matter under 10 micrometers, decreased to 114 microgrammes per cubic meter this year, the lowest in four years, according to the bureau.

The overall air quality of Beijing was better than last year, with 22 more days of grade I air quality than were recorded in 2010, Zhuang said.

Beijing uses a five-grade classification of air quality on the basis of pollution indices, with grade I being the best and grade V the worst. Days with grade I or II air quality are considered "blue sky days."

However, Beijing also experienced several days of poor air quality as a result of bad weather conditions. Factors such as weaker winds and a rise in humidity are unsuitable for the dispersal of atmospheric pollutants, according to the bureau.


【1】 【2】


 
 
 
 
We Recommend
 
 
 

Email|Print|Comments(Editor:燕勐)

Leave your comment0 comments

  1. Name

  

Selections for you


  1. Chinese pandas open to public view in Britain

  2. Manufacture of China's Guqin

  3. Chinese dancing festival in Kuala Lumpur

  4. Exploration team set off for Antarctica station

Most Popular

Opinions

  1. 2011: Year of government micro-blogs
  2. Chance of RMB devaluation small
  3. Narrow vision limits China's discourse power
  4. Dubai chasing Singapore's strictness with violations
  5. Too early to loosen China's property controls
  6. Do not let disputes taint Sino-Korean ties
  7. The natural way to pick your stocks
  8. China must retain its strengths as it goes global
  9. Canada's short-sighted move should be denounced
  10. Developed world should fulfill emission promise

What's happening in China

iPhone 4S goes on sale in Taiwan

  1. 9 jailed over hacking of online games in E China
  2. China's Guqin manufactured in Hangzhou
  3. Biologist: Glowing bacteria in pork not hazardous
  4. Shanghai state firms to get overseas talent
  5. China Red Cross denies buying Apple computer

PD Online Data

  1. Yangge in Shaanxi
  2. Gaoqiao in Northern China
  3. The drum dance in Ansai
  4. Shehuo in Baoji City
  5. The dragon dance