Environmental impact assessment refers to the investigation, prediction and evaluation of what impact the plan or project will have on the atmosphere, water, soil, organisms and the environmental system composed of them, and what impact the results of these impacts will have on human health and living environment, as well as the natural environment, economy, culture and historical environment, Based on this, the countermeasures and measures to prevent or reduce environmental pollution and damage are formulated.
According to the above definition, before the construction of an airport, a city predicting the aircraft noise and putting forward some suggestions on land use control around the airport belongs to environmental impact assessment.