2015年2月,我国公安部统计:中国民用机动车保有量已达2.64亿辆,其中汽车1.54亿辆,仅次于美国,居世界第二位。这些汽车绝大多数都以燃油为主要动力。汽车数量越来越多,为人们带来快捷和便利的同时,也对环境发起了重大挑战。一、汽车对环境的污染1.汽车制造阶段目前市面上销售和使用的汽车,在制造过程中,都需要消耗大量自然资源。这些汽车,除需要使用大量的 February 2015, China’s Ministry of Public Security statistics: China’s civilian vehicle ownership has reached 264 million units, of which 154 million vehicles, second only to the United States, ranking second in the world. The vast majority of these cars are mainly powered by fuel. As the number of cars is growing, bringing speed and convenience to people, it also poses major challenges to the environment. First, the car pollution of the environment 1 car manufacturing stage Currently on the market for sale and use of the car, in the manufacturing process, need to consume a lot of natural resources. In addition to these cars need to use a lot of