Full
Outline
Understanding the distribution characteristics of flux footprint based on the observation of carbon, water, and heat fluxes by the eddy covariance (EC) method is an important research issue. The flux footprint prediction (FFP) model was used to analyze the annual observation data of Chenhu wetland ecosystem in Hubei province in 2022, and the variation of flux contribution of eddy-related system in different time and atmospheric stability conditions was investigated. The results indicated that flux footprints of Chenhu wetland ecosystem exhibited temporal variations, with their spatial distribution corresponding to the prevailing wind directions. The coverage of flux footprints during the growing season exceeded that of the non-growing season, while the range of night-time flux contribution area was larger than that of daytime. The maximum distance in the 90% flux contribution zone was 1300m. Within this source area, the annual flux contribution is: marshland (56.01%) > pond water surfaces (20.44%) > lake water surfaces (9.83%) > hydraulic construction land (3.05%) > inland mudflats (0.42%) > other grassland (0.24%). The contribution of reed marsh and water body to the observation data was more than 80%, confirming the monitoring data were representative.
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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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