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3 科学技术支出门槛效应的估计
Table 3 Estimation of the threshold effect of science and technology expenditure
变量 环保执法(enf) 环保立法(law) 环保投资(inv)
(0, 0.530] (0.530, 2.250] (2.250, +∞) (0, 0.360] (0.360, 4.440] (4.440, +∞) (0, 1.530] (1.530, 3.740] (3.740, +∞)
smogi,t-1 0.149* 0.150* 0.038* 0.132 0.124 0.162* -0.003 -0.095 -0.167
(1.67) (1.69) (1.72) (1.44) (1.34) (1.72) (-0.01) (-0.36) (-0.62)
gov 0.228 2.007*** -0.229 0.027*** -0.075* -0.093* -0.163 0.709 -1.018*
(0.47) (2.79) (-1.42) (3.05) (-1.66) (-1.76) (-0.28) (1.24) (-1.70)
ey -2.462* -2.463* -2.792 -2.155** -2.289** -1.539 -5.812* -7.001* -5.756*
(-1.74) (-1.76) (-1.61) (-2.49) (-2.52) (-1.35) (-1.76) (-1.92) (-1.72)
ey2 0. 778* 0.778* 0.914 0. 605 0.666* 0.472 1.115 1.197 0.604
(1.75) (1.75) (0.89) (1.61) (1.66) (1.47) (1.56) (1.60) (0.30)
s -0.136* -0.137* -0.127* -0.193*** -0.192*** -0.207*** -0.206** -0.212** -0.203**
(-1.82) (-1.82) (-1.70) (-2.68) (-2.66) (-2.86) (-2.00) (-2.08) (-1.99)
fdi -0.114* -0.115* -0.001 -0.056 -0.049 -0.071 -0.007 0.047 -0.087
(-1.72) (-1.72) (-0.91) (-0.82) (-0.71) (-1.02) (-0.03) (0.23) (-0.43)
den -0.007* -0.007* -0.007* -0.007* -0.007* -0.008** -0.013 -0.014 -0.015
(-1.75) (-1.75) (-1.67) (-1.81) (-1.79) (-2.00) (-1.42) (-1.46) (-1.62)
AR(1) -3.299 -3.321 -3.021 -3.335 -3.300 -3.277 -2.734 -2.712 -2.754
-[0.001] [0.001] [0.001] [0.001] [0.001] [0.001] [0.006] [0.006] [0.005]
AR(2) 2.564 2.632 2.441 2.776 2.744 2.667 2.230 2.225 2.327
[0.113] [0.146] [0.108] [0.155] [0.152] [0.149] [0.125] [0.130] [0.144]
Sargan 24.206 24.321 22.446 25.315 25.277 25.082 24.991 24.877 25.021
[1.000] [1.000] [1.000] [1.000] [1.000] [1.000] [0.895] [0.894] [0.895]