State Key Laboratory of Resources and Environmental Information System;
Institute of Geographic Sciences and Natural Resources Research;
Chinese Academy of Sciences;
Beijing 100101;
China;
College of Resources and Environment;
University of Chinese Academy of Sciences;
Beijing 100049;
China;
China National Environmental Monitoring Centre;
Beijing 100012;
China;
Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application;
Nanjing 210023;
China;
air environmental quality; geographical detectors; air auality index; spatiotemporal analysis;