"The current stalemate between the developed and the developing worlds must be broken," Schwarzenegger said. "It is time we came together in a new international agreement that can be embraced by rich and poor nations alike."

Schwarzenegger, a former movie star and body builder, has made reducing emissions a key policy goal of his governorship of California, the world's seventh largest economy.

Wearing a green tie, the governor told delegates that rich and poor nations have different responsibilities in fighting climate change, but said it was time to stop the blame game.

"The time has come to stop looking back at the Kyoto Protocol," he said. "The consequences of global climate change are so pressing ... it doesn't matter who was responsible for the past. What matters is who is answerable for the future. And that means all of us."

UN climate change negotiations will take place in December in Bali to try to forge a way to cut emissions after Kyoto expires.

Schwarzenegger, who backed a landmark 2006 California law to reduce carbon dioxide and other greenhouse gas emissions by 25 percent by 2020, urged leaders to stop talking and start acting.

"California is moving the United States beyond debate and doubt to action," he said. "I urge this body to push its members to action also."

Schwarzenegger has sharply criticized the Bush administration for not doing enough on the issue, while praising European countries for showing leadership and developing an emissions-trading system .

President George W. Bush pulled the United States out of the Kyoto treaty, which requires 36 industrial nations to cut greenhouse emissions by at least 5 percent from 1990 levels by 2012. Bush says Kyoto unfairly burdens rich countries while exempting developing countries like China and India.

Developing nations say rich states built up their economies without emissions restraints and argue that less-developed countries should have the same opportunity to establish their economies now.