| 变量 | (1) lrcc | (2) ecolrcc | (3) shlrcc | (4) stlrcc | (5) lrcc | (6) ecolrcc | (7) shlrcc | (8) stlrcc |
|---|---|---|---|---|---|---|---|---|
| did | 0.025*** | 0.035*** | 0.005 | -0.035*** | 0.021*** | 0.029*** | 0.004 | -0.030*** |
| (0.005) | (0.007) | (0.005) | (0.009) | (0.004) | (0.006) | (0.004) | (0.008) | |
| urb | -0.053* | -0.083** | 0.044 | 0.037 | ||||
| (0.027) | (0.036) | (0.034) | (0.035) | |||||
| lnpower | -0.020*** | -0.026*** | -0.008 | 0.016* | ||||
| (0.007) | (0.008) | (0.006) | (0.008) | |||||
| lnarea | -0.003 | -0.006 | 0.006 | 0.001 | ||||
| (0.003) | (0.004) | (0.004) | (0.007) | |||||
| lnroad | -0.013** | -0.022*** | 0.007 | 0.047*** | ||||
| (0.006) | (0.008) | (0.005) | (0.012) | |||||
| lnhum | -0.023*** | -0.029*** | -0.010* | 0.013** | ||||
| (0.005) | (0.007) | (0.005) | (0.006) | |||||
| 常数项 | 0.070*** | 0.025*** | 0.130*** | 0.522*** | 0.325*** | 0.370*** | 0.161*** | 0.260*** |
| (0.004) | (0.005) | (0.003) | (0.008) | (0.051) | (0.067) | (0.043) | (0.061) | |
| 时间固定效应 | 是 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 个体固定效应 | 是 | 是 | 是 | 是 | 是 | 是 | 是 | 是 |
| 观测值/个 | 2106 | 2106 | 2106 | 2106 | 2106 | 2106 | 2106 | 2106 |
| R2 | 0.745 | 0.678 | 0.287 | 0.710 | 0.796 | 0.748 | 0.314 | 0.734 |
