地方政府的雾霾治理政策作用机制——政策工具、空间关联和门槛效应

李子豪, 袁丙兵

Environmental policy mechanism of local governments in the treatment of haze pollution：Policy tools, spatial correlations and threshold effects

LI Zihao, YUAN Bingbing

表4 城镇化门槛效应的估计

Table 4 Estimation of urbanization threshold effect

区间 环保执法(enf) 环保立法(law) 环保投资(inv) (0, 45.760] (45.760, 86.500] (86.500, +∞) (0, 68.710] (68.710, 81.550] (81.550, +∞) (0, 67.370] (67.370, 82.010] (82.010, +∞) smogi,t-1 0.154 0.157 0.159 0.199 0.203 0.205 0.332 0.256 0.210 (1.11) (1.14) (1.16) (1.57) (1.58) (1.60) (1.62) (1.26) (1.03) gov 1.788 0.226 0.418 0.027*** -0.103* -0.090* -0.115 2.500*** -3.642** (1.22) (0.58) (1.05) (2.71) (-1.93) (-1.79) (-0.23) (2.60) (-2.57) ey -10.385** -8.965** -9.040** -10.967*** -10.922*** -10.937*** -11.056* -12.148** -13.111** (-2.49) (-2.13) (-2.15) (-2.81) (-2.79) (-2.82) (-1.84) (-2.05) (-2.22) ey2 2.157** 1.804* 1.817* 2.391** 2.383** 2.374** 2.363 2.483 2.494 (2.17) (1.79) (1.80) (2.54) (2.53) (2.50) (1.39) (1.49) (1.51) s -0.066 -0.074 -0.082* -0.116 -0.119 -0.127 -0.168* -0.137 -0.164* (-1.36) (-1.47) (-1.95) (-1.46) (-1.47) (-1.50) (-1.69) (-1.40) (-1.63) fdi -0.079 -0.075 -0.078 -0.104 -0.107 -1.09 -0.260* -0.210 -0.219 (-0.79) (-0.76) (-0.79) (-1.13) (-1.14) (-1.16) (-1.67) (-1.30) (-1.36) den -0.008* -0.009** -0.009** -0.004 -0.004 -0.004 -0.039*** -0.036*** -0.037*** (-1.87) (-2.04) (-2.08) (-0.93) (-0.92) (-0.95) (-3.55) (-3.37) (-3.44) AR(1) -3.774 -3.558 -3.449 -3.472 -3.311 -3.287 -2.844 -2.920 -2.941 [0.001] [0.001] [0.001] [0.001] [0.001] [0.001] [0.004] [0.004] [0.004] AR(2) 2.611 2.544 2.494 2.844 2.582 2.573 2.517 2.523 2.525 [0.167] [0.157] [0.150] [0.164] [0.160] [0.153] [0.170] [0.174] [0.178] Sargan 23.822 22.882 22.772 26.022 23.774 23.463 26.233 26.821 26.833 [1.000] [1.000] [1.000] [1.000] [1.000] [1.000] [0.914] [0.923] [0.925]