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 4
Results of spatial regressions.
| | Variable | Model 1 | Model 2 | Model 3 | | SLM | SEM | SLM | SEM | SLM | SEM |
| | 0.1883 (0.0000) | | 0.2088 (0.0000) | | 0.1922 (0.0000) | | | | 0.8503 (0.0000) | | 0.8466 (0.0000) | | 0.8488 (0.0000) | | 2.8975 (0.0000) | 4.0379 (0.0000) | 2.4456 (0.0000) | 3.9278 (0.0000) | 2.823 (0.0000) | 4.2338 (0.0000) | | lnPD | 0.0253 (0.3634) | −0.0358 (0.0543) | 0.0235 (0.3661) | −0.0339 (0.0688) | 0.0266 (0.3136) | −0.0352 (0.0528) | | lnCitsize | 0.0292 (0.1033) | 0.0326 (0.0065) | 0.0597 (0.0005) | 0.0370 (0.0029) | 0.0683 (0.0001) | 0.0436 (0.0004) | | lnGreLevel | −0.0384 (0.5192) | −0.1429 (0.0003) | −0.0690 (0.2123) | −0.1344 (0.0008) | −0.0961 (0.0910) | −0.1615 (0.0000) | | lnRoadDen | | | 0.1595 (0.0000) | 0.0301 (0.1956) | −0.1453 (0.2158) | −0.2090 (0.0051) | | (lnRoadDen)2 | | | | | 0.0704 (0.0054) | 0.0538 (0.0007) | | 0.2595 | 0.6607 | 0.3545 | 0.6616 | 0.3325 | 0.6768 | | Log likelihood | −33.7889 | 30.7763 | −17.2486 | 31.6051 | −20.3827 | 37.1094 |
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Note: ,represent significance levels of 10% and 1%, respectively. |
