Environmental protection is the conscious protection and rational use of natural resources by human beings in order to prevent the natural environment from being polluted and destroyed, and the integrated management of the polluted and damaged environment in order to create a suitable environment for human life, The working environment Environmental protection refers to a variety of actions taken by human beings to solve real or potential environmental problems, to coordinate the relationship between human beings and the environment, and to ensure the sustainable development of economic society. Its methods and means include engineering, administration, law, economy, propaganda and education.
The equivalent sound level of environmental noise in urban area is between 53.5 decibels and 65.8 decibels, and the national average is 56.5 decibels (area weighted). Among the 43 cities, 33 have sound levels over 55 decibels, among which, the equivalent sound levels in Datong, Kaifeng and Lanzhou are over 60 decibels, and the pollution is heavy.