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2 Tobit模型回归结果
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Table 2 The regression results of Tobit model
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| 变量 | 流域整体 | 黄河上游 | 黄河中游 | 黄河下游 | | lnpgdp | 0.1710*** | 0.1370*** | 0.00159 | 0.3430*** | | (6.89) | (3.98) | (0.03) | (6.39) | | urb | -0.0226*** | -0.0320*** | -0.0168** | -0.0232*** | | (-7.63) | (-9.15) | (-2.25) | (-2.92) | | urb2 | 0.0002*** | 0.0002*** | 0.0002*** | 0.0002** | | (6.31) | (7.64) | (3.74) | (2.10) | | is | -0.0030*** | -0.0057*** | 0.0130*** | -0.0080*** | | (-3.22) | (-4.16) | (6.41) | (-3.11) | | lnfdi | -0.0186*** | 0.0074 | -0.0349*** | -0.0223 | | (-3.30) | (0.97) | (-3.62) | (-0.94) | | lntec | -0.0290*** | -0.0215 | -0.0300* | -0.0696*** | | (-2.89) | (-1.44) | (-1.74) | (-3.11) | | er | 0.00004 | 0.0008 | 0.0003 | 0.0013 | | (0.09) | (1.28) | (0.41) | (0.75) | | _cons | -0.0787 | 0.3940 | 0.4160 | -1.6730*** | | (-0.37) | (1.38) | (0.92) | (-2.99) | | var(e.gde) | 0.0719*** | 0.0538*** | 0.0624*** | 0.0569*** | | (19.25) | (11.40) | (11.68) | (10.20) | | N | 741 | 260 | 273 | 208 |
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