Beijing will issue a new urban planning strategy by the end of this year that will for the first time contain a plan to preserve large and green "air corridors".

An urban air corridor is a new field being researched by ecological departments both at the city and national levels.

Liu Chunlan of the Beijing Research Institute of Environmental Protection said the corridors will be wide tracts of land along the direction of Beijing's prevailing winds that could help disperse pollutants and hot air.