The air quality in Shenzhen ranked fifth out of 168 key Chinese cities in May, statistics from the Ministry of Ecology and Environment showed recently.
The top five cities were Haikou, Zhuhai, Zhongshan, Lhasa and Shenzhen. The cities with worst air quality were Taiyuan, Linfen, Xianyang, Shijiazhuang and Xi’an.
The average of PM2.5 concentration, a key air pollution indicator, in 339 prefecture-level cities in May, was 22 micrograms per cubic meter, down by 8.3 percent year on year.
The city’s average PM2.5 concentration stood at 11 micrograms per cubic meter, statistics from the city’s ecological and environment bureau showed.
Among 74 subsdistricts in the city, Nan’ao, Kuichong, Dapeng, Shahe and Fubao took top five positions with good air quality, while Dalang, Longhua, Huangbei, Guanlan and Pinghu ranked at the bottom.
The PM2.5 concentrations of the subdistricts in May ranged between 6.2 and 14.1 micrograms per cubic meter.
At district level, Yantian and Dapeng enjoyed low PM2.5 concentration, while Longhua, Guangming and Longgang had higher concentration, which ranged from 7.6 to 12.5 micrograms per cubic meter.
In the ranking during the period between January and May, Shenzhen took the sixth place. Lhasa, Haikou and Zhoushan took top three places.
Shenzhen’s air quality index has been listed in the top 10 among 168 key Chinese cities for seven consecutive years. Shenzhen’s air quality index has met the European Union standards.
The city has rolled out a series of measures such as Shenzhen Blue Sky Sustainable Development Action Plan, Blue Sky Project and Blue Sky Action Plan since 2004.
It is the first city in the country to control pollution from shipping, to analyze PM2.5 origins and to replace all fuel-powered public buses and taxis with electric ones.