生产性服务业集聚、空间溢出与城市绿色全要素生产率——来自长三角城市群的经验证据

Productive Services Agglomeration, Spatial Spillover and Urban Green Total Factor Productivity --Based on the Empirical Evidence from Yangtze River Delta

通过生产性服务业集聚来提升绿色全要素生产率既为城市高质量发展腾出环境容量,也为创新驱动产业转型升级指明了方向。系统测度了长三角城市群26个城市2006—2017年的绿色全要素生产率及其时空转换特征,并就生产性服务业集聚对绿色全要素生产率的影响效果进行了实证研究。结果显示:在多种情境下,生产性服务业集聚对绿色全要素生产率均具有显著的正向促进作用,但中心城市的空间溢出特征及高端生产性服务业的作用效果则相对更为明显。较之于绿色技术效率,现阶段生产性服务业的专业化集聚和高端化发展更利于绿色技术进步,但人力资本、技术创新、对外开放的空间外溢效应方面仍不显著,导致生产性服务业集聚在跨行业、跨区域推进城市群绿色发展中的作用也大打折扣。

Improving green total factor productivity(GTFP)through the producer services agglomeration not only frees up environmental capacity for high-quality urban development, but also points out the direction for innovation-driven industrial transformation and upgrading. The paper systematically measures the GTFP and its spatial & temporal characteristics, and conducts an empirical study on the impact of producer services agglomeration on GTFP. The results show that the producer services agglomeration has a significant positive effect on GTFP, and has obvious industry and spatial differences. Compared with the efficiency of green technology, the professional agglomeration and advanced development of producer services are more conducive to the progress of green technology, but there is still much room for improvement in human capital, technological innovation, the local role of opening up and spatial spillover. As a result, the role of producer services agglomeration in promoting GTFP of urban agglomerations across industries and regions is greatly reduced.