China will continue to limit most families to just one child in the coming decades, state media said Monday, despite concerns about the policy's problematic side-effects, such as too few girls and an aging population.

China has the world's largest population and credits its 30-year-old family planning limits with preventing 400 million additional births and helping break a traditional preference for large families that had left many trapped in cycles of poverty.

There has been growing speculation among Chinese media, experts and ordinary people about whether the government would relax the policy soon, allowing more people to have two children.

A family planning official in the southern province of Guangdong on Saturday predicted his province would loosen the restrictions by 2015, and possibly scrap the one-child limit by 2030.

But the China Daily newspaper on Monday quoted Li Bin, head of the National Population and Family Planning Commission, as saying there were no plans to change the policy any time soon.