MAKUHARI - A grouping of the world's top greenhouse gas emitters on Sunday backed UN-led efforts to forge a global pact to fight climate change but disagreed on a sectoral approach to curb emissions from industry.
G20 nations ranging from top carbon emitters to big developing economies Brazil, Indonesia and South Africa held three days of talks near Tokyo to discuss ways to tackle rapidly rising emissions.
"It's not so much these two groups are at loggerheads with each other, they are also thinking of how they can cooperate collectively," Halldor Thorgeirsson of the UN Climate Change Secretariat said.
The developing world is demanding rich states do more to curb their own emissions and help poorer countries pay for clean technology.
Both sides managed to bridge differences in Bali last December to launch two years of talks on a pact that binds all nations to emissions curbs to replace the Kyoto Protocol.
"The whole debate on climate change is moving away from just being an issue of targets to being an issue of how to reduce emissions," said Thorgeirsson, who was pleased with the G20 talks that were billed as a dialogue, not a negotiation.
"This is a very good sign that the good spirit of Bali will prevail in Bangkok as well," he said, referring to the March 31-April 4 meeting in the Thai capital, the first UN-led climate meeting of nations that backed the "Bali roadmap".
But some G20 members and delegates voiced concern over Japan's proposal for sectoral caps for polluting industries.
Japan wants top greenhouse gas emitting nations to assign near-term emissions targets for each industrial sector which, added up, would then form a national target.
But it was unclear if this target was mandatory or voluntary and developing nations said the scheme needed to take into account their individual circumstances.
"It is clear that developed and developing countries are still far apart on sectoral approaches," South African Environment Minister Marthinus van Schalkwyk said.