ニュース

The introduction of urban agglomeration policies is conducive to promoting the governance of urban diseases, the generation of innovation and the healthy development of regional economy26,27,28,29,30. Ding et al.19 used DID method to conduct an empirical analysis of seven national urban agglomerations, and believed that national urban agglomerations can effectively drive regional economic growth, and the driving effect was affected by spatial distance and the economic development level of central cities. Li et al.20 took the implementation of China’s regional integration policy as a quasi-natural experiment and found that regional integration policy can effectively promote the level of regional green innovation. Tan et al.31 analyzed data on urban agglomerations in China and found that the improvement of regional integration can promote the development of green innovation, mainly through the promotion of foreign direct investment, economic agglomeration and financial development. The study of Shen et al. 2Effect”? A perspective of land resource carrying capacity. Land Use Policy 117, 106094. https://doi.org/10.1016/j.landusepol.2022.106094 (2022)." href="/articles/s41598-023-37384-7#ref-CR32" id="ref-link-section-d54e610"32 found that the development model of urban agglomeration can effectively improve the carrying capacity of land resources and help to improve the economic performance of cities within urban agglomerations. Therefore, the urban agglomeration policies may have an impact on a larger range of spatial agglomeration33, and then produce policy spillovers to micro-market entities, that is to promote the reduction of enterprise transaction costs by means of the integration effect of urban agglomerations: firstly, the urban agglomerations improve the level of integrated markets, Ren et al.34 believed that cities within urban agglomerations mainly promoted the improvement of the degree of integration of the urban agglomerations through the interconnection of transportation infrastructure and the diversification of economic connections. Secondly, the city cluster should improve the level of integration system. With the city governing counties, the merger of districts and the city alliance as the main governance model35, under the city alliance system, the inter-regional consultation and cooperation mechanism is more perfect. Administrative barriers and institutional barriers between cities within the city cluster are gradually weakened or eliminated through top-level design such as regional development integration, and regional policy coordination is enhanced. The government service “All in One Network” has realized the unification of regional rules and regulations and the convenient sharing of public services, greatly reducing the time for administrative approval, driving down the institutional transaction costs of enterprises, enabling enterprises to invest more in production and research and development, which is conducive to the improvement of enterprise innovation capability36. Thirdly, the urban agglomeration will improve the level of integrated infrastructure. The construction of urban agglomeration will continue to improve the level of transportation infrastructure integration, further promote the reduction of regional segmentation and market transaction costs, and gradually form a unified regional market. In order to obtain more market share and profits, enterprises will actively explore new markets and face competition from more peer enterprises. Under the competitive effect, in order to maintain and expand their technological advantages, enterprises will increase the intensity of R&D investment and improve their technological level./p>

2Effect”? A perspective of land resource carrying capacity. Land Use Policy 117, 106094. https://doi.org/10.1016/j.landusepol.2022.106094 (2022)./p>