1Department of Economics and Management, North China Electric Power University, Baoding, Hebei 071003, China
2The Academy of Baoding Low-Carbon Development, Baoding, Hebei 071003, China
Submission date: 2017-05-05
Final revision date: 2017-06-02
Acceptance date: 2017-06-04
Online publication date: 2017-10-30
Publication date: 2018-01-02
Pol. J. Environ. Stud. 2018;27(1):373–382