基于非期望产出和门槛回归模型的环渤海地区生态效率
韩增林, 吴爱玲, 彭飞, 孙嘉泽, 夏康

Eco-efficiency in the Bohai Rim area based on undesirable outputs and threshold regression model
Zenglin HAN, Ailing WU, Fei PENG, Jiaze SUN, Kang XIA
表5 门槛值估计
Tab.5 Estimation of threshold values
门槛变量 门槛估计值 95%置信
区间		 门槛估计值 95%置信区间
科技水平(TECH) 1.069 [1.055, 2.193] 1.517 [1.069, 1.590]
城市规模(SCAL) 2.511
(583.2)		 [1.388, 4.181] 3.138
(773.7)		 [1.198, 3.683]
对外开放(INEX) 1.553
(10.16)		 [1.463, 3.403] 2.823
(30.99)		 [1.550, 3.115]
环境规制(ECRE) 3.129 [2.565, 3.963] 3.825 [2.609, 4.078]