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Outline
Based on the International Civil Aviation Organization (ICAO) standard emission model, combined with statistical data from the Civil Aviation Administration of China (CAAC), an updated 2023~2024 air pollutant and carbon fusion emission inventory for the landing and take-off (LTO) cycles of civil aviation airports in mainland China was constructed, and the accuracy of the emission inventory was verified using the CHAP dataset. The results showed that in 2023, NOx, CO, HC, SO2, PM, and CO2 emissions from LTO cycles at Chinese civil aviation airports were 1.277×105, 1.010×105, 0.084×105, 0.037×105, 0.010×105, and 176.739×105t, respectively. In 2024, the corresponding emissions were 1.353×105, 1.070×105, 0.089×105, 0.039×105, 0.010×105, and 187.189×105t, with a total LTO phase emission increase of 5.91% compared to 2023. The spatial and temporal characteristics of emissions in 2023 and 2024 indicated that economically developed eastern regions (such as Beijing, Shanghai, and Guangzhou) had CO2 emissions accounting for more than 26% of the national total due to dense flight operations, whereas emissions were lower in western regions due to the limited number of regional airports. Empirical models showed a strong correlation between NOx emissions and CHAP concentration data (r=0.50), validating the reliability of the inventory.
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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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