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| Green Economic Effect and Spatial Spillover Effect of Eco-Collaborative Agglomeration |
| Li Shengting,Zhou Xiaowei,Wu Zenghai |
| （International Business School, Shaanxi Normal University, Xi'an 710119, China) |
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Abstract Industrial agglomeration has gradually become a typical way of natural resources allocation and industrial spatial organization recently, meanwhile, it has been an important engine of China's economic and social development. At present, China's economy is upgrading from scale expansion characterized by "structural acceleration" to high-quality development characterized by "structural deceleration". The regional ecological problems are becoming more and more prominent,and that is caused by the pollutant discharge of the industrial agglomeration. Industrial development faces the dual pressure of industrial structural upgrading and ecological environment improvement.Therefore, it is a key issue related to high-quality development in the future of seeking a balance path between economic development and environmental improvement and enhancing the efficiency of green economy. As the main organization mode of industrial development at the present stage, collaborative agglomeration has many impacts on regional economy and ecology, which needs to be deeply analyzed.#br#The collaborative agglomeration between environmental protection industry(EPI) and manufacturing industry is a subdivision mode of industry heterogeneity. This paper named it eco-collaborative agglomeration according to its significant ecological closed-loop function and positive environmental externalities on the basis of comparing its cause, effect and correlation with general collaborative agglomeration. The eco-collaborative agglomeration index is measured based on location entropy, and the green economic effect and spatial spillover effect of eco-collaborative agglomeration are investigated using The Durbin model SDM, based on the short panel data from 2013 to 2019. Finally, the data were divided into coastal and inland groups, and the differences of the characteristics of the two groups are compared.#br#The results are presented as follows. The green economic efficiency is a comprehensive index to measure sustainable economic development essentially and has the obvious characteristics of path dependence. The level of the current green economy efficiency is greatly affected by the efficiency of the early stage, showing obvious positive feedback and dynamic accumulation effect in it's development process. The U-shaped feature is shown by the promoting effect of eco-collaborative agglomeration on green economic efficiency on a national scale, and there is significant spatial heterogeneity. The degree of eco-collaborative agglomeration is higher in coastal area, which has an effective promotion effect on the efficiency of green economy, while the degree is lower level in inland area, which shows an inhibition effect on the efficiency of green economy. The eco-collaborative agglomeration has a positive spatial spillover effect, and the eco-collaborative agglomeration in neighboring areas has a significant positive impact on the improvement of local green economic efficiency, however, the spillover effect in coastal areas is much greater than that in inland areas. The environmental regulation can promote the efficiency of green economy through ecological agglomeration. At present, the effect of environmental regulation in coastal areas shows postitive, while the effect in inland areas shows shading effect. In addition, the regulation spillover effect in coastal areas is significantly positive, while that in inland areas is significantly negative.#br#According to the conclusions, the corresponding policy suggestions are put forward as follows. It is necessary to form a linkage mechanism between ecological economic evaluation and regulation intensity adjustment, and to control the regulation level within a reasonable range based on the calculation of green economic efficiency index and other indicators according to local development situation. It is necessary to ensure the strong execution and level of regulations, and to promote the growth of EPI, which can expand the scale of terminal treatment of industrial pollution to improve the efficiency of the green economy. The governments in coastal area should further stabilize and gradually improve the level of environmental regulation to force the optimization of manufacturing structure and adoption of cleaner technology. The governments of inland areas should maintain a reasonable ecological regulatory bottom line to prevent "pollution paradise" phenomenon, meanwhile, the governments should start ecological index evaluation and multi-stage warning mechanism to adjust the regulation intensity according to the results of evaluation in time, in order to maintain the regional ecological environment quality. Only in this way can they get out of the trap of "sacrificing environment for economy". Finally, it is equally important to establish and improve the policy system of supporting EPI, to build a third-party network operation platform suitable for the development of EPI. It is very important to include regional ecological quality and social welfare evaluation indicators into the scope of inspection of local officials' achievements, and to formulate reasonable and appropriate development strategies in accordance with local conditions, so as to promote regional sustainable and high-quality coordinated development effectively. The conclusion can provide important reference for decision-making in how ecological agglomeration promotes regional green economy efficiency and high-quality development.#br#
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Received: 05 July 2021
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