A Chinese official Tuesday called on developed countries to earnestly fulfill their commitments and take the lead in reducing greenhouse gas emissions in large quantities and to transfer funds and technology to developing nations.

Foreign Ministry spokesperson Jiang Yu made the remarks at a regular press briefing Tuesday in response to a question on the UN climate change conference in Copenhagen.

More than 15,000 participants, including delegates from 192 countries, gathered in Denmark's capital Copenhagen on Monday for the 15th Conference of the Parties of the United Nations Framework Convention on Climate Change (UNFCCC).

The meeting is expected to seal a deal on fighting global warming, as a successor to the Kyoto Protocol, which expires in 2012.

Jiang said China would continue to adopt an active and constructive attitude in the Copenhagen conference.

The Chinese government believed the key to the success of the Copenhagen conference was to adhere to the principles laid out in the UNFCCC, the Kyoto Protocol and the Bali road map, especially that of common but differentiated responsibilities, said Jiang.

The participants were also expected to consolidate and expand the consensus on adaptation to and mitigation of the effects of the climate change as well as funds and technology transfer, Jiang said.

Chinese Premier Wen Jiabao would attend the conference at the invitation of Danish Prime Minister Lars Lokke Rasmussen. His detailed schedule was still under discussion, said Jiang.