EVALUATION AND ANALYSIS OF ENVIRONMENTAL PROTECTION INVESTMENT EFFICIENCY IN CHINA BASED ON DATA ENVELOPMENT ANALYSIS MODEL

The environmental protection investment aims at protecting the environment, improving the quality of the environment and preventing the deterioration of the ecological environment. A certain amount of capital is put into environmental protection in the form of money, machinery and other elements to form the environmental capital stock. In this study, the DEA (Data envelopment analysis) model was used to calculate and analyse the input-output efficiency of environmental protection in China from 2001 to 2015. The results show that the overall efficiency of environmental protection input-output in China was low from 2001 to 2015, and the DEA efficiency was not fully achieved in most years, and the contribution of environmental protection investment to the output of environmental protection industry needs to be further improved. Finally, according to the analysis results of DEA model, the countermeasures and suggestions were put forward to optimise the investment structure of environmental protection and promote the rapid economic development from the aspects of broadening the investment channels of environmental protection.