声明
1. Introduction
2. Theoretical Framework
2.1 Literature Review
2.2 Theoretical Hypothesis
3. Data and Background
3.1 Data
3.2 Background
4. Empirical Strategy
4.1 Baseline Empirical Model
4.2 Difference-in-Difference Model
5. Main Results
5.1 Baseline Results
5.2 Difference-in-Difference Results
6. Additional Empirical Results
6.1 Long-Term Effect
6.2 Placebo Test
6.3 Heterogeneity Test
6.4 Robustness Check: Another Data Source of Coal Abundance
6.5 The Coal Boom of 2008:A Traditional Difference-in-Difference Model
7. Conclusion
Appendix A
Appendix B
参考文献
