数字经济对黄河流域城市绿色创新的赋能效应 |
| 吴玉彬, 李月, 陈家创, 张洪瑞 |
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Digital economy empowering urban green innovation in the Yellow River Basin |
| Yubin Wu, Yue Li, Jiachuang Chen, Hongrui Zhang |
| 图2 Adv门槛估计值及似然比检验 |
| Fig.2 The threshold effect of Adv: estimate and likelihood ratio test |
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