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In order to analyze the influence of Poyang Lake Water Control Project on wetland vegetation habitat, MIKE21 was used to establish two-dimensional hydrodynamic model of Poyang Lake. Through the scenario of the typical years, the changes of water level and wetland vegetation growth habitat area in the main lake area and wetland nature reserve after the operation of the water conservancy project were simulated. The simulation results show that the operation of the Hydraulic Project has a great influence on the water level in the north of Songmen Mountain, and the influence degree gradually decreases from north to south. The operation of the hub has a great influence on the most suitable area and suitable habitat area of wetland vegetation in different hydrological years. The vegetation habitat surface varies greatly. After the operation of the hub, the dry year increases by 43.8 %, the normal year increases by 24.6 %, and the wet year is only 16.4 %. In October and November, the suitable habitat area can reach more than 2,000 km2, accounting for about 2/3 of the total lake area, indicating that wetland vegetation will provide Siberian cranes with rich food sources and make them better survive and reproduce in wetlands. The simulation results reveal the influence of the Hydraulic Project on the change law of lake water level and wetland vegetation habitat interval under the current scheduling scheme, which can provide a theoretical reference for engineering construction and dispatching operation and maintenance.
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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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