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Suitable River Ecological Flow in Southern Mountainous Areas Under Influence of Small Hydropower
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Li ZHANG1, Jie-ru CHEN2, Dong-hui WAN1, Hang-bin YAO1, Ling-he WANG1, Shu-yin WEN1, Cui-ting WANG1
Water Resources and Power | 2023, 41(4) : 65 - 68
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Water Resources and Power | 2023, 41(4): 65-68
• HYDROLOGY, WATER RESOURCES AND ENVIRONMENT •
Suitable River Ecological Flow in Southern Mountainous Areas Under Influence of Small Hydropower
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Li ZHANG1, Jie-ru CHEN2, Dong-hui WAN1, Hang-bin YAO1, Ling-he WANG1, Shu-yin WEN1, Cui-ting WANG1
Affiliations
  • 1.Pearl River Water Resources Research Institute, Pearl River Water Resources Commission of the Ministry of Water Resources, Guangzhou 510610, China
  • 2.College of Civil Engineering, Fuzhou University, Fuzhou 350108, China
Published: 2023-04-25 doi: 10.20040/j.cnki.1000-7709.2023.20221249
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The problems, such as unreasonable development of small hydropower and the neglect of the river ecological flow demand, can negatively impact the hydrological ecology of the lower reaches and damage the habitat environment of aquatic organisms. Taking the Xiaxiang hydropower station in the Dahuan River Basin of Guangxi Zhuang Autonomous Region as the research reach, carp was selected as the target fish. Based on the suitability curve of carp velocity and water depth, using the habitat simulation, the characteristics of hydrodynamic distribution and carp mass habitat area distribution under 11 flow conditions were analyzed. The results show that the suitable ecological flow of target fish in dry season is 9.38 m3/s, and the minimum ecological flow is 6.25 m3/s. The comparative analysis was carried out by using the hydrology method, and the suitability of the minimum ecological flow was evaluated by three evaluation indexes. The results show that the suitable ecological flow and the minimum ecological flow of the habitat simulation are reasonable and suitable. The research results are of great significance to ensure the ecological environment health of the downstream rivers of small hydropower stations.

suitable ecological flow  /  habitat simulation  /  hydrology method  /  influence of small hydropower
Li ZHANG, Jie-ru CHEN, Dong-hui WAN, Hang-bin YAO, Ling-he WANG, Shu-yin WEN, Cui-ting WANG. Suitable River Ecological Flow in Southern Mountainous Areas Under Influence of Small Hydropower[J]. Water Resources and Power, 2023 , 41 (4) : 65 -68 . DOI: 10.20040/j.cnki.1000-7709.2023.20221249
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20221249
  • Receive Date：2022-06-15
  • Online Date：2026-01-27
  • Published：2023-04-25
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History
  • Received：2022-06-15
  • Revised：2022-07-15
Funding
Affiliations
    1.Pearl River Water Resources Research Institute, Pearl River Water Resources Commission of the Ministry of Water Resources, Guangzhou 510610, China
    2.College of Civil Engineering, Fuzhou University, Fuzhou 350108, China
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表12种不同金属材料的力学参数
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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