差别定价的产业用地供应策略对产业结构升级的影响——基于中国277个城市的实证分析
唐宇娣, 朱道林, 程建, 李瑶瑶, 宋洋

Impact of differential pricing strategy of land supply on the upgrading of industrial structure:A study based on the empirical analysis of 277 cities in China
TANG Yudi, ZHU Daolin, CHENG Jian, Li Yaoyao, SONG Yang
图2 单一门槛效应下门槛估计值与置信区间
Figure 2 Threshold estimation and confidence interval under single threshold effect