黄河流域沿线城市绿色发展效率时空演变及其影响因素
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岳立, 薛丹
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Spatiotemporal change of urban green development efficiency in the Yellow River Basin and influencing factors
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YUE Li, XUE Dan
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表4 稳健性检验二
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Table 4 Second robustness test
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| 变量 | 流域整体 | 黄河上游 | 黄河中游 | 黄河下游 | | lnpgdp | 0.1610*** | 0.1060*** | -0.0117 | 0.2950*** | | (6.61) | (3.31) | (-0.19) | (6.47) | | urb | -0.0234*** | -0.0339*** | -0.0111 | -0.0221*** | | (-8.05) | (-9.67) | (-1.47) | (-2.87) | | urb2 | 0.0002*** | 0.0002*** | 0.0002*** | 0.0002* | | (6.40) | (7.91) | (3.40) | (1.86) | | is | 0.0045*** | 0.0062*** | -0.0142*** | 0.0120*** | | (4.01) | (3.92) | (-5.78) | (4.28) | | lnfdi | -0.0215*** | 0.0028 | -0.0295*** | -0.0339 | | (-3.81) | (0.36) | (-2.97) | (-1.44) | | lntec | -0.0328*** | -0.0234 | -0.0333* | -0.0763*** | | (-3.27) | (-1.62) | (-1.94) | (-3.29) | | er | 0.1110 | 0.3260*** | 0.0163 | 0.0697 | | (1.48) | (3.18) | (0.12) | (0.28) | | _cons | -0.3180 | 0.1100 | 1.5230*** | -1.8300*** | | (-1.43) | (0.38) | (2.81) | (-3.51) | var
(e.gde) | 0.0712*** | 0.0525*** | 0.0638*** | 0.0548*** | | (19.25) | (11.40) | (11.68) | (10.20) | | N | 741 | 260 | 273 | 208 |
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