SHENZHEN’S air quality ranked fifth out of 168 key Chinese cities in the first quarter (Q1) of the year, statistics from the Ministry of Ecology and Environment showed recently.
Lhasa, Haikou and Zhoushan took the top three spots in terms of air quality in the January-March period, while Urumqi, Xianyang and Nanyang ranked at the bottom with the worst air quality, data showed.
The top three cities in the March ranking were Haikou, Lhasa and Zhoushan, while the lowest three were Xianyang, Taiyuan and Yangquan.
In March, the ratio of the number of days with good air quality in 339 cities at prefecture level or above was 87.2%, up by 5.4% over March last year. The average PM2.5 concentration, a key indicator of air pollution, was 32 micrograms per cubic meter, down by 15.8% year on year. The average PM10 concentration was 61 micrograms per cubic meter, down by 10.3% year on year.
Between January and March, the ratio of the number of days with good air quality in 339 cities at prefecture level or above was 83.8%, up by 2.9% over Q1 last year.
In 2022, Shenzhen will put more effort in improving its air quality by strengthening controls over fine particles and ozone, reducing volatile organic compounds and oxynitride, renovation of boilers, and using clean energy at ports as well as electric sanitation and dump trucks.
ARTICLE FROM: Shenzhen Daily