Group of 77 and China on Wednesday stressed again the need to retain the two-track negotiation mechanism, warning against any attempts to dismantle the Kyoto Protocol, which stipulated binding emissions cut targets for industrialized countries.

"We have seen that developed country parties to the Kyoto Protocol are seeking to dismantle the protocol itself," said NafieAli Nafie, head of the Sudanese delegation, who spoke on behalf ofG77 and China at the high level segment of the Copenhagen climate change conference.

Developed countries were in favor of a "single undertaking", which was much weaker than the protocol and would undermine and reinterpret the U.N. Framework Convention on Climate Change (UNFCCC) and the Kyoto Protocol, Nafie said.

He said developed countries intended to undermine the principles of "equity, common but differentiated responsibilities and respective capabilities" by throwing away the Kyoto Protocol.

"Group77 wishes to stress the need to maintain the two-track outcome of which the Kyoto Protocol is an essential instrument," Nafie said.

The ongoing U.N.-led climate change talks are conducted in two working groups, namely the Ad Hoc Working Group on Further Commitments for Annex I Parties under the Kyoto Protocol (AWG-KP) and Ad Hoc Working Group on Long-term Cooperative Action (AWG-LCA).

The two-track negotiation mechanism was established in the Bali Action Plan, adopted two years ago. According to the action plan, developed countries should come up with emissions reduction targets for the second commitment period under the Kyoto Protocol after the first period expires in 2012, and discuss how to help developing countries on their mitigation and adaptation efforts under the UNFCCC.