低碳门槛下绿色创新补贴对全要素生产率的影响
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熊爱华, 丁友强, 胡玉凤
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Impact of low-carbon subsidies and green innovation on total factor productivity in view of the threshold effect of carbon emission reduction
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XIONG Aihua, DING Youqiang, HU Yufeng
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表4 绿色创新补贴对绿色全要素生产率的门槛效应回归结果
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Table 4 Threshold effect regression of low-carbon subsidies and green innovation on green total factor productivity (GTFP)
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| 变量 | 绿色技术创新 | | 绿色产品创新 | | 政府低碳补贴 | | (1)L.0 | (2)L.1 | (3)L.2 | (4)L.3 | (5)L.0 | (6)L.1 | (7)L.2 | (8)L.3 | (9)L.0 | (10)L.1 | (11)L.2 | (12)L.3 | 单一
门槛 | Th-1 | | 3.97 | 3.97 | 3.97 | | | 4.06 | 3.08 | 3.97 | | | 3.93 | 4.04 | 3.97 | | RSS | | 397.26*** | 313.19*** | 296.72*** | | 345.83*** | 319.85*** | 302.30*** | | 347.42*** | 322.39*** | 308.93*** | lnGit×I
(CEI≦γ1) | 0.39***
(8.44) | -0.23**
(-4.94) | -0.24***
(-4.79) | -0.28***
(-5.09) | | -0.27***
(-3.68) | -0.18***
(-3.18) | -0.33***
(-4.51) | -0.31***
(-5.07) | | 0.002
(1.55) | 0.01***
(4.03) | 0.004***
(2.94) | 0.01***
(3.34) | lnGit×I
(γ1<CEI≦γ2) | 0.37***
(8.21) | | | | | | | | | | -0.01***
(-5.39) | | | | lnGit×I
(CEI>γ2) | 0.36***
(8.18) | -0.20**
(-4.52) | -0.21***
(-4.32) | -0.24***
(-4.56) | | 0.17***
(4.94) | 0.10**
(2.56) | 0.05
(1.30) | 0.08*
(1.65) | | -0.001
(-0.40) | -0.01***
(-3.64) | -0.01***
(-4.49) | -0.01***
(-4.18) | | 控制变量 | Y | Y | Y | Y | | Y | Y | Y | Y | | Y | Y | Y | Y | | F | 21.79 | 0.48 | 0.45 | 0.51 | | 23.12 | 0.56 | 0.45 | 0.54 | | 16.17 | 0.49 | 0.42 | 0.42 | | ΔR2 | 0.067 | 0.068 | 0.078 | 0.093 | | 0.065 | 0.053 | 0.060 | 0.077 | | 0.052 | 0.049 | 0.053 | 0.056 |
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