Pollution has emerged as an urgent priority for China's leaders as they try to reverse the damage done by decades of breakneck growth and head off public anger about the sorry state of the nation's air, water and soil.

In a wide-ranging action plan to cut emissions over the next two years, China's cabinet, the State Council, said the country had already fallen behind in its pollution targets over the 2011-2013 period and was now having to step up its efforts.