Beijing uses high-tech to monitor air, water, earth

Beijing has ramped up its technological innovation to safeguard its ecological environment, a senior official from the Beijing Municipal Ecology and Environment Bureau announced on Thursday.

Li Li'na, director of the technology and international cooperation section under the bureau, stated that "the city has taken the lead in China to innovate a comprehensive source analysis method of the particulate matter 2.5 or PM2.5 — airborne particles that are 2.5 micrometers in diameter or smaller and are harmful to health — providing quantitative analysis of the sources and regional impacts of PM2.5 in Beijing, accurately identifying pollution sources and causes".

The bureau reported that the annual average density of PM2.5 has fallen by 65.9 percent, from 89.5 micrograms per cubic meter in 2013 to 30.5 currently.