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3 GTFP平均值与变异系数的演变趋势

Fig. 3 Evolution trend of GTFP mean and coefficient