Beijing's reputation as a major world city has been tarnished by regular outbreaks of hazardous smog, especially during the winter, and poorly regulated heavy industry in neighbouring Hebei has been identified as one of the major culprits.
Policymakers are also trying to tackle the problem of overdevelopment and overpopulation in fast-growing Beijing itself, known as "big city syndrome", and the new cross-regional plan will aim to restrict urban development on the capital's borders.
The development of separate "fortress economies" in the region was blamed for widening income disparities and causing a "race to the bottom" when it came to environmental law enforcement.
Beijing, home to 22 million people, is trying to curb population growth and relocate industries and other "non-capital functions" to Hebei in the coming years as part of its efforts to curb pollution and congestion.
(Reporting by David Stanway and Editring by Nick Macfie)
(This story has not been edited by NDTV staff and is auto-generated from a syndicated feed.)