资源型城市演化阶段识别及其发展特征

卢硕, 张文忠, 余建辉, 李佳洺

The identification of spatial evolution stage of resource-based cities and its development characteristics

LU Shuo, ZHANG Wenzhong, YU Jianhui, LI Jiaming

表4 双重门槛模型稳健性检验

Tab. 4 Double threshold model robustness test

变量	系数估计值	标准误差	T值	95%置信区间
$x_{it} I (g_{it} < 0.018)$	1.692	0.381	4.440	[2.440, 0.944]
$x_{it} I (0.018 \leq g_{it} < 0.390)$	-0.531	0.060	-8.910	[-0.647, -0.413]
$x_{it} I (g_{it} \geq 0.390)$	-0.268	0.046	-5.840	[-0.358, -0.198]
_cons	0.397	0.008	48.780	[0.381, 0.413]