Study on the decoupling relationship between energy consumption, pollution emission and economic growth in Tianjin and its cause

Based on decoupling index, the decoupling of energy consumption, waste gas and waste water emissions and economic growth in Tianjin from 2006 to 2016 was comprehensively compared, and the factors behind each situation were analyzed. The research shows that the average growth rate of energy consumption in Tianjin from 2006 to 2016 is 7.62%. Energy consumption is mainly consumed by the secondary industry. Energy consumption intensity is the main restraining factor to reduce pollution emissions, and the restraining effect is increasing year by year. Economic intensity factors have a positive impact on carbon emissions. Therefore, Tianjin emission reduction can be controlled in such aspects as strictly controlling high-energy consumption industry, increasing technical input and using economic leverage.