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This study utilizes panel data from 30 Chinese provinces from 2000 to 2021. We treat the carbon trading policy as a quasi-natural experiment, and apply a multi-period difference-in-differences method to systematically evaluate its impact on carbon emissions. The results indicate that: after the introduction of the carbon trading policy, the total carbon emissions in the pilot regions decrease by 13.2%, while carbon intensity and per capita carbon emissions fall by 21.3% and 17.2%, respectively. The carbon trading policy significantly reduces carbon intensity in the pilot regions; however, the impacts on total carbon emissions and per capita emissions are not significant. Carbon reduction through trading primarily relies on improvements in industrial structure, with weaker mediation effects from carbon trading prices, market activity, and low-carbon technology. There may be complementary and synergistic effects among different policies. Although carbon trading plays a positive role in promoting carbon reduction, its synergistic effects on SO2, NOx and PM2.5 still need to be enhanced. These results provide important empirical support for understanding carbon trading policies and offer a scientific basis for refining the carbon trading system as well as guiding future adjustments and optimizations of carbon market policies.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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