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Xiangjiaba Hydropower Station has six functions: power generation, navigation, flood control, irrigation, reverse regulation, sediment retaining. Since the project was put into operation in 2012, all other benefits except irrigation have begun to show gradually. With the completion of the first water intaking tunnel project of the north and south main canal of Xiangjiaba, and the comprehensive construction of the first phase project of the north general irrigation area, the research on the impact of irrigation water intaking on the power generation of Xiangjiaba hydropower station is an urgent work. Based on the adjustment calculation of 43 years series runoff during 1970-2013, inflow variation of Xiangjiaba hydropower station was calculated by considering the impact of the six large reservoirs regulation and storage in the upstream and water diversion in the Yunnan province. On this basis, the impact of water intaking after the first phase of north irrigation area, north second phase of irrigation area, and irrigation district being completed on the power generation of the Xiangjiaba Hydropower Station was analyzed. The research shows that irrigation water intaking reduces the power generation of Xiangjiaba, which is 1.78×108 kW·h, 2.84×108 kW·h and 3.78×108 kW·h, respectively, compared with that before water intaking, and mainly in the dry season. After the intake of water in each period, the water discharge can be reduced by 109 m3/s at most, the annual average output can be reduced by 105 MW at most, and the number of installed hours can be reduced by 63 h at most.
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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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