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2 政策工具差异与空间溢出效应估计
Table 2 Estimation of the effect of different types of measures and spatial spillovers
变量 解释变量：执法案件数(enf) 变量 解释变量：环保立法(law) 变量 解释变量：环保财政支出(inv)
SDM模型 DSDM模型 SDM模型 DSDM模型 SDM模型 DSDM模型
smogt-1 0.092** smogt-1 0.109*** smogt-1 0.103***
(2.56) (2.78) (2.67)
enf 0.163 0.246 law -0.021*** -0.021*** inv -0.464* -0.458*
(0.63) (0.94) (-3.28) (-3.25) (-1.71) (-1.66)
ey -7.276** -5.556** ey -2.821** -2.954*** ey -2.349* -1.421*
(-2.13) (-2.06) (-2.45) (-2.73) (-1.92) (-1.73)
ey2 2.106** 1.581* ey2 1.622* 1.896* ey2 1.039* 1.219*
(2.42) (1.74) (1.69) (1.84) (1.74) (1.77)
s -0.037* -0.029 s -0.028 -0.043* s -0.155** -0.149**
(-1.86) (-1.63) (-1.54) (-1.96) (-2.39) (-2.10)
sci -0.243* -0.256* sci -0.225* -0.203* sci -0.388** -0.206
(-1.88) (-1.92) (-1.73) (-1.70) (-1.99) (-1.52)
urb 0.016 0.064* urb 0.059* 0.066* urb 0.130* 0.117*
(1.08) (1.68) (1.71) (1.70) (1.74) (1.66)
fdi -0.040* -0.065** fdi -0.017* -0.015* fdi -0.071* -0.070*
(-1.68) (-2.16) (-1.68) (-1.67) (-1.92) (-1.87)
den -0.002 -0.002 den -0.006** -0.005* den -0.013** -0.015**
(-0.82) (-0.60) (-1.99) (-1.74) (-2.29) (-2.13)
Wenf -0.551 -0.635 Wlaw 0.043*** 0.043*** Winv -0.313* -0.384*
(-1.04) (-1.19) (3.79) (3.81) (-1.73) (-1.77)
Wey -0.474* -0.463* Wey -0.968* -0.892* Wey -0.586* -0.443
(-1.77) (-1.67) (-1.86) (-1.67) (-1.65) (-1.45)
Wey2 2.055* 1.600* Wey2 0.406 0.609 Wey2 2.304 1.842
(1.82) (1.75) (1.29) (1.43) (1.15) (0.79)
Ws -0.070 -0.074 Ws -0.104* -0.153** Ws -0.218** -0.164*
(-1.07) (-1.09) (-1.80) (-2.48) (-2.11) (-1.68)
Wsci 0.354 0.563* Wsci 0.274 0.212 Wsci 0.441 0.506
(1.46) (1.68) (1.62) (1.03) (0.64) (1.22)
Wurb -0.017 -0.014 Wurb -0.069 -0.213** Wurb -0.507* -0.435*
(-0.30) (-0.28) (-0.84) (-2.22) (-1.93) (-1.67)
Wfdi 0.044 0.175** Wfdi 0.052 0.045 Wfdi 0.039 0.014
(0.58) (1.97) (0.77) (0.77) (0.37) (0.12)
Wden -0.010* -0.005 Wden -0.005 -0.004 Wden -0.011 -0.013
(-1.77) (-0.88) (-0.73) (-0.62) (-1.12) (-1.14)
ρ 0.779*** 0.787*** ρ 0.590*** 0.589*** ρ 0.559*** 0.562***
(22.39) (22.72) (15.04) (14.80) (11.50) (11.14)
R2 0.313 0.320 R2 0.337 0.355 R2 0.372 0.381
log L -585.757 -888.657 log L -888.657 -915.679 log L -676.972 -607.577