China Agriculture & farming 1 Air pollution 1 Air pollution control 1 Air pollution prevention 1 Chinese cities 1 Control efficiency 1 Economic and social effects 1 Economic development 1 Economic growth 1 Economics 1 Efficiency 1 Global Malmquist-Luenberger productivity index 1 Global malmquist-luenberger productivity index 1 Growth rate 1 International trade 1 Macroeconomics 1 Migration, immigration & emigration 1 PM2.5 pollution 1 Pm2.5 pollutions 1 Pollution prevention and controls 1 Productivity 1 Resources allocation 1 Slack-based measures 1 Super-SBM model 1 Super-slack-based measure model 1 atmospheric pollution 1 economic development 1 environmental economics 1 global change 1