美国的环境保护政策及其对经济的影响张俐萍一、美国环境保护的发展过程环境保护，指对人类生存环境的保护。生存环境的内涵包括空气、水源、自然保护区、风景游览胜地、电磁波、臭氧层和整个生态体系的良性循环。在近代大工业建立之前，环境对于人类是作为一种自然界无偿... US Environmental Protection Policy and Its Impact on the Economy Zhang Liping First, the environmental protection in the development of U.S. environmental protection refers to the protection of the living environment of mankind. The connotation of living environment, including air, water, nature reserves, scenic resorts, electromagnetic waves, the ozone layer and the ecosystem as a whole virtuous circle. Before the founding of modern big industry, the environment for mankind as a kind of nature ...