MIAMI — Gov. Arnold Schwarzenegger brought his star power and California's vanguard environmental policies Friday to a climate conference, at which Florida joined the ranks of U.S. states and cities committed to fighting global warming.

The two-day meeting here, hosted by Florida Gov. Charlie Crist, reinforced a growing public and corporate determination to confront the climate change that threatens Florida's 1,200-mile coastline and $7-billion-a-year outdoor recreation industry.

Crist signed executive orders requiring Florida to adopt the same tough pollution controls California has. The aim is to cut greenhouse gas emissions to 1990 levels by 2025, require 20% of state power to come from renewable sources, and compel civil servants to use fuel-efficient vehicles and "green" offices.

But it was Schwarzenegger who stole the limelight Friday, taking swipes at what he called the Bush administration's neglect of environmental issues and at Detroit automakers for fighting tougher fuel-efficiency standards.

"I'm very proud to see another governor joining California and the growing number of states not looking to Washington for leadership anymore," Schwarzenegger told the gathering of 950 corporate, environmental and community leaders, to thunderous applause.

With 34 states and 600 cities now on board with his plan to halt global warming, Schwarzenegger said, the United States was approaching the "tipping point" — when the federal government and industries would recognize the folly of ignoring this century's greatest challenge.

"We cannot expect rapidly growing countries like China and India to protect the environment when the United States is not showing leadership," he said.

Environment ministers from Germany and Britain, who took part in the conference, praised Crist and Schwarzenegger for helping Americans recognize their global responsibilities. Since the Bush administration rejected the Kyoto Protocols of the U.N. Convention on Climate Change in 2001, relations with European allies on environment issues have been strained.

Schwarzenegger said his anti-pollution actions, the toughest in the nation, were proof that Republicans could be responsible stewards of the environment. But he insisted there was no partisan divide on the climate issue.

"There is no Democratic planet Earth. There is no Republican planet Earth. There's just a planet Earth, and we all have a responsibility to take care of it," he said.