China’s Most Polluted Cities – WHO Index
Beijing is the world’s 10th most polluted capital city
Sept. 28 – Lanzhou has been ranked at the bottom among Chinese cities in a World Health Organization study of the world’s most air polluted cities. The report, issued by the WHO yesterday, focuses on air particles known as PM10s (microscopic vehicle and dust specks of less than 10 micrometers, in 121 micrograms per cubic meter).
Worryingly, WHO data was compiled from China’s own official sources, the China Statistical Yearbook – which is not noted for its overall accuracy and has a tendency to massage data in the State’s favor. The WHO recommends an upper limit of 20mcg for PM10s, which can cause serious respiratory problems including lung cancer.
Beijing, China’s capital city, ranked the fifth most polluted city in China, and was the world’s 10th most polluted capital, ranking lower than Lagos in Nigeria. This news comes despite government pledges to clean the city up for the long term following the Olympics just three years ago.
The top 20 most polluted Chinese cities ranked as follows:
The top 10 cleanest Chinese cities in terms of air quality are as follows:
The full report, covering all major cities across the globe, can be downloaded in spreadsheet format here.
Hong Kong, which was not included in the rankings, is known from its own published data to have 47 PM10s in 2009, ranking it second best in China after Haikou.
Foreign Investment in China’s Green Sector
The June issue of China Briefing magazine offering an overview of the country’s renewable energy sector and discussing environment-related tax incentives before concluding with a look at foreign involvement in China’s green building industry.