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This study focused on the water diversion project system of the Yellow River's middle and lower reaches centered around the Xiaolangdi Reservoir, systematically analyzing its mechanisms and effectiveness in flood control and disaster reduction as well as agricultural irrigation guarantee. Historical operation data and typical cases showed that the Xiaolangdi Reservoir had a stable reduction ratio of more than 40% in flood peak flow, significantly enhancing the flood control standard. At the same time, through water storage regulation and cross-regional water transfer, it could effectively guarantee water supply for downstream and cross-regional irrigation during dry periods, supporting food security and ecological security. The study also pointed out that the project operation still faced challenges such as extreme climate and water resource competition, and further optimization of scheduling strategies and improvement of collaborative management levels were needed. The research results could provide scientific basis for the refined scheduling of water diversion projects and sustainable management of water resources in the basin, and were of great significance for ensuring national water security, food security and ecological security.
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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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