Study on the influence of closed pitregreening of open-pit coal mine on the air quality of surrounding environment
In this paper,the influence of green restoration on the ambient air quality around the mine is analyzed by tracking and detecting the ambient air quality in the key areas before and after the implementation of the project.The results showed that the concentrations of PM10,PM2.5 and nitrogen oxides decreased to varying degrees before and after the project,while the concentration of negative oxygen ions showed a gradual upward trend.The regreening of the mine is very effective in preventing wind and fixing sand,reducing dust and so on.At the same time,the carbon sink effect of green plants is obvious,which greatly improves the air quality of the surrounding environment.
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