| 自变量 | 模型（1） | 模型（2） | 模型（3） | 模型（4） | 模型（5） | 模型（6） |
|---|---|---|---|---|---|---|
| 全体城市 | 全体城市 | 按人口规模划分 | 按经济规模划分 | |||
| 小城市 | 大城市 | 小城市 | 大城市 | |||
| Unrelated Variety | -0.032 | -0.220*** | -0.055* | -0.318*** | 0.027 | -0.284** |
| (0.029) | (0.038) | (0.032) | (0.060) | (0.026) | (0.119) | |
| Related Variety | 0.569*** | 0.253*** | 0.275*** | 0.180** | 0.186*** | 0.011 |
| (0.036) | (0.041) | (0.045) | (0.071) | (0.035) | (0.142) | |
| Pgdp (log) | -0.192** | -0.046 | -0.331** | -0.124 | 0.311** | |
| (0.084) | (0.087) | (0.164) | (0.076) | (0.157) | ||
| Population (log) | 0.190*** | 0.086 | 0.753*** | -0.021 | 0.285** | |
| (0.065) | (0.089) | (0.207) | (0.072) | (0.120) | ||
| Research (log) | 0.002 | -0.015 | 0.010 | 0.005 | 0.013 | |
| (0.020) | (0.026) | (0.018) | (0.020) | (0.033) | ||
| Tech Finance (log) | 0.036 | 0.034 | 0.006 | 0.015 | 0.144*** | |
| (0.024) | (0.024) | (0.038) | (0.016) | (0.054) | ||
| Patent Stock (log) | 0.397*** | 0.264*** | 0.555*** | 0.198*** | 0.873*** | |
| (0.050) | (0.055) | (0.075) | (0.047) | (0.129) | ||
| Renewable Stock Percent | 3.157*** | 2.409*** | 5.172*** | 2.542*** | 20.556*** | |
| (0.627) | (0.603) | (1.200) | (0.530) | (2.719) | ||
| Constant | 0.664*** | -0.340 | -0.549 | -2.733 | 0.688 | -9.027*** |
| (0.037) | (0.906) | (0.983) | (2.349) | (0.862) | (2.152) | |
| N | 4,275 | 4,275 | 2,561 | 1,714 | 3,149 | 1,126 |
| R2 | 0.522 | 0.573 | 0.477 | 0.683 | 0.417 | 0.778 |
| 年份固定 | 是 | 是 | 是 | 是 | 是 | 是 |
| 城市固定 | 是 | 是 | 是 | 是 | 是 | 是 |
