Research Article
Effects of Urban Density and City Size on Haze Pollution in China: Spatial Regression Analysis Based on 253 Prefecture-Level Cities PM2.5 Data
Table 5
Results of spatial regressions in different regions.
| | Variable | Eastern | Central | Western | | SLM | SEM | SLM | SEM | SLM | SEM |
| | ρ | 0.1835 (0.0000) | | 0.7937 (0.0000) | | 0.0573 (0.0000) | | | λ | | 0.8905 (0.0000) | | 0.8079 (0.0000) | | 0.5645 (0.0000) | | β0 | 2.8579 (0.0000) | 3.6008 (0.0000) | 0.7879 (0.0424) | 4.0867 (0.0000) | 3.7113 (0.0000) | 4.7008 (0.0000) | | lnPD | −0.0190 (0.6872) | −0.0112 (0.7149) | −0.0151 (0.5860) | −0.0159 (0.5413) | −0.0258 (0.6092) | −0.0763 (0.0468) | | lnCitsize | 0.0613 (0.0356) | 0.0200 (0.2825) | 0.0457 (0.0304) | 0.0287 (0.1493) | 0.1171 (0.0004) | 0.1076 (0.0000) | | ln GreLevel | 0.0839 (0.4951) | 0.0391 (0.6836) | −0.0672 (0.1551) | −0.0949 (0.0575) | −0.1217 (0.2559) | −0.2368 (0.0085) | | lnRoadDen | −0.2911 (0.1957) | −0.3404 (0.0262) | 0.0375 (0.7057) | −0.0461 (0.6081) | −0.2885 (0.4233) | −0.2520 (0.3587) | | (lnRoadDen)2 | 0.1075 (0.0183) | 0.0822 (0.0071) | 0.0082 (0.6913) | 0.0200 (0.2772) | 0.1044 (0.3204) | 0.0615 (0.4431) | | R 2 | 0.4396 | 0.7370 | 0.7100 | 0.7138 | 0.2900 | 0.5201 | | Log likelihood | −9.9659 | 13.3707 | 37.5661 | 36.6526 | −1.5504 | 7.1967 |
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Note: ,,represent significance levels of 10%, 5%, and 1%, respectively. |
