Beijing watchdogs step up monitoring efforts with precise approach

Environmental watchdogs in Beijing are boosting monitoring facilities that could help to precisely locate sources of pollution, and are close to minimizing sources from factories and coal burning, according to officials.
 
The capital had only 35 air quality monitoring stations in 2014, but the number has since risen to 67. In addition, 1,500 micro air quality sensors began operating last year, according to the Beijing Municipal Bureau of Ecology and Environment.
 
Wang Xin, an engineer with the Beijing Municipal Environmental Monitoring Center, said there is a sensor in each of the 9 square kilometers of the capital's flat, or plain, areas and in each of the 64 sq km of the mountainous ones.