Spatial and temporal characteristics of intercity green technology flows and emission reduction effects in the Yangtze River Economic Belt
Accelerating the flow of green technology to enhance the sharing of green technologies among cities is not only a key measure to implement the green development strategy and achieve the dual carbon goals,but also a key step to promote the cross-regional flow of factors and build a large national unified market.This study examined the intercity green technology flow by intercity green patent transfer,and analyzed the spatiotemporal evolution patterns of intercity green technology flow in the Yangtze River Economic Belt from 2001 to 2020 with the help of big data mining and GIS spatial analysis.The emission reduction effects of green technology flow was studied from the perspective of technology agglomeration.This study found that:1)The green technology flow within the Yangtze River Economic Belt was mainly dominated by the Yangtze River Delta region,and the level of cross-regional green technology flow was low.From the perspective of flow directions,cross-regional green technology diffusion has experienced the development path of random flow →agglomeration to the Yangtze River Delta → mixed flow.2)The Yangtze River Economic Belt green technology diffusion activities at the national level were highly concentrated in the Yangtze River Delta region,with the Chengdu-Chongqing region gradually emerging,while the Beijing-Tianjin region and the Pearl River Delta were the main partners in the flow of green technologies of the Yangtze River Economic Belt,thus forming a rhombic network with the Beijing-Tianjin,Yangtze River Delta,Pearl River Delta,and Chengdu-Chongqing regions as the hubs.3)The regression results show that there was a scale threshold effect in the local emission reduction effect brought about by green technologies acquired from the outside,that is,local carbon emission reduction can only be realized after the green technologies acquired from the outside has reached a certain scale.
green patentgreen technology flowcarbon emissionsYangtze River Economic Belt
万方数据
维普
