Studies on the effects of air pollution and the environmental intervention.

The monitoring of air pollution and health levels was carried out in coal burning districts and the districts with central heating in Chengde City. The air pollution levels in winter and summer were compared in coal burning districts and the districts with central heating, indoors and outdoors, in kitchens and bedrooms, before and after the central heating system was used. The health levels of residents who lived in coal burning districts and in the districts with central heating were compared. The effects of environmental intervention of central heating were demonstrated preliminarily through the analysis of the environmental quality, the evaluation of health effects and the estimation of economic benefits. Chengde City is located in the northern part of Hebei Province, and the urban air pollution is serious. The city government has planned to develop the central heating in phases, in order to clean the air. The effects of the environmental intervention of central heating on the environment and human health will be discussed in this article by using experimental epidemiological analysis of the air pollution.