China has banned its airlines from paying the new European Union carbon charge, state news agency Xinhua has reported - stepping up the international battle over the scheme.

The levy applies to all airlines flying to and from EU countries. Companies that do not comply face fines and ultimately could be banned from using EU airports.

The Civil Aviation Administration of China (CAAC) said on Monday that airlines were not allowed to pay the EU charge, increase freight costs or add other fees, according to Xinhua. It cited authorisation from the state council, China's cabinet.

Hinting at possible retaliation, Xinhua added: "China will consider adopting necessary measures to protect interests of Chinese individuals and companies, pending the development of the issue."

The EU's ambassador in Beijing, Markus Ederer, told a press briefing it hoped to resolve the issue through negotiation. Beijing's announcement came one week before a China-EU summit.

Although the scheme came into force from 1 January, fees do not have to be paid until March 2013. Supporters believe including aviation in the emissions trading scheme is crucial because the industry's carbon output is soaring.