黄河流域生产性服务业集聚对城市绿色全要素生产率的影响效应与空间溢出
刘岩, 程钰, 王亚平

Spatial spillover and effect of producer service agglomeration on urban green total factor productivity in the Yellow River Basin
LIU Yan, CHENG Yu, WANG Yaping
图1 生产性服务业集聚作用机理
Fig. 1 Agglomeration mechanism of producer services