More than 15 percent of the country's 4-trillion-yuan ($587 billion) stimulus package will be spent on cutting carbon emissions by the end of 2010, China's chief climate change negotiator said yesterday.

China is trying to tackle global warming "both ambitiously and seriously", said Ambassador Yu Qingtai, the country's special representative for climate change negotiations.

This is the first time the government has announced using funds for green initiatives from the stimulus package, which was unveiled last year.