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Scientific evaluation of flood resource utilization potential is an important prerequisite for carrying out flood resource utilization in the basin and alleviating the contradiction between supply and demand of water resources. To evaluate the potential of flood resource utilization in different sections of the Xizhijiang River Basin, the SWAT model was constructed to simulate the natural runoff process of Xizhijiang River Basin, and the flood resources of the basin were quantified by combining the limit analysis theory. The potential of flood resources utilization in the upper, middle and lower reaches of the basin was evaluated, and the feasibility of flood resources utilization in Xizhijiang River Basin was discussed based on the water quality conditions. The results show that the SWAT model has good applicability in runoff simulation of Xizhijiang River Basin; The inter-annual distribution of flood resources is uneven, and there are great differences in inter-annual flood resources utilization potentiality. The utilization condition of flood resources in the lower reaches is better than that in the upper reaches, while the utilization rate of flood resources in the lower reaches is lower. The average annual current and theoretical utilization potential of flood resources in the lower reaches are 3.48×108m3 and 7.97×108m3, respectively. The water quality indexes of the main stream of Xizhijiang River Basin are not lower than the class Ⅲ standard, and the utilization of flood resources in Xizhijiang River is feasible. This study can provide support for the optimal allocation of flood resources in Xizhijiang River Basin, and it has an important reference value for achievement of high quality development of the basin.
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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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