What principles and measures did Arnold Schwarzenegger take in environmental protection when he was governor?

As the governor of California, promoting environmental protection policy is a great achievement of Schwarzenegger. He signed a bill to force California to reduce greenhouse gas emissions, making California the first state in the United States to do so. Schwarzenegger advocated the use of environmentally friendly energy and driving environmentally friendly cars on different occasions, and criticized the Bush administration for its inaction on the "greenhouse problem". Arnold's attitude made him the most environmentally friendly American governor in the eyes of the public.

Take measures to make the garden around your residence in Los Angeles more water-saving; He also donated money to environmental organizations such as the American Nature Conservancy.