| Currently,China’s economy has started a new level of development.However,because it relies heavily on long-term evolution,such as mass consumption of energy resources and pollution of the ecosystem environment are gradually becoming more prominent,great pressure on future economic development and ecosystem protection,it is both a trend and an inevitable trend for the development of green civilization to replace the development of traditional industrial civilization.As leaders of regional economic development and managers of environmental policy implementation,local governments’ behaviors have a key impact on economic development and environmental conditions.Simultaneously,under the background of the national innovation-led strategy,the importance and status of technology in eco-environmental protection and pollution reduction operations can not be ignored.Under such a circumstance,this paper pays attention to the urgent practical problem of coordinated development of economy and ecology.First,based on organizing and summarizing existing literature,the single and joint impact mechanisms of local government competition and technological innovation on ecological efficiency are analyzed theoretically.Next,take the data of 30 regions in China from 2000 to 2019 as samples,the SBM-DEA model with undesired output was used to measure the ecological efficiency,and the variation tendency of ecological efficiency was analyzed regionally and sub-regionally.Analysis of the current situation of the region,but also describes the present condition and current problems in government competition and technological innovation.Finally,the influence of two core explanatory variables on ecological efficiency are empirically tested,and the interaction between them are added to the model to analyze their common influence on ecological efficiency.Through research,this paper concludes:(1)From the present condition,China’s ecological efficiency declined slowly from 2000 to 2019,and there is a regional distribution feature that the eastern region has the best ecological efficiency.(2)From the theoretical analysis,local governments use tax competition,expenditure competition and investment competition to restrain ecological efficiency;technology innovation promotes ecological efficiency by improving resource utilization rate,upgrading industrial structure and changing residents’ lifestyle;there is a contradiction between the short-term economic expansion target of local governments and the related characteristics of technological innovation activities,local government competition inhibits technological innovation,so both of them have a restraining effect on ecological efficiency.(3)From the empirical results,the estimation coefficient of local government competition on ecological efficiency is markedly negative,and this inhibition effect in the eastern region surpasses other regions;the estimation coefficient of technological innovation on ecological efficiency is markedly positive in the static regression model,but in the dynamic regression model,technological innovation inhibits ecological efficiency in the central and western regions.The joint influence of the two on ecological efficiency is significantly negative in the model,and through further mediation effects test,it is found that local government competition reduces the level of technological innovation and thus inhibits ecological efficiency,which verifies the transmission mechanism of local government competition-technological innovation-ecological efficiency.Accordingly,this paper thinks that we should do the following:(1)firmly grasp the characteristics of regional development and improve the level of ecological efficiency according to local conditions;(2)perfecting the government’s benign competition mechanism,solving the main dilemma of government’s ecological governance;(3)strengthen the construction of technological innovation system and fully play a leading role of innovation in ecological and environmental protection. |