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Study on Ecological Flow of Small Watershed Based on Hydrological Method
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Yang LI1, Jin ZOU1, Lei ZHANG2, Lei LIU3, Qi-bin ZHOU1, Xiao HE1, An-you LIU1, Yi RONG1
Water Resources and Power | 2023, 41(8) : 52 - 55
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Water Resources and Power | 2023, 41(8): 52-55
• HYDROLOGY, WATER RESOURCES AND ENVIRONMENT •
Study on Ecological Flow of Small Watershed Based on Hydrological Method
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Yang LI1, Jin ZOU1, Lei ZHANG2, Lei LIU3, Qi-bin ZHOU1, Xiao HE1, An-you LIU1, Yi RONG1
Affiliations
  • 1.Department of Hydropower Engineering, Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China
  • 2.Yunnan Institute of Water Resource and Hydropower Research, Kunming 650228, China
  • 3.Yunnan Provincial Hydrological and Water Resources Bureau Qujing Substation, Qujing 655000, China
Published: 2023-08-25 doi: 10.20040/j.cnki.1000-7709.2023.20221983
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To determine the appropriate ecological flow for small watershed assessment, taking Qingshui River in Pearl River Basin as an example, the monthly ecological flow was calculated by using six hydrological methods such as Tennant method, Texas method and frequency curve method. Furthermore, combined with hydrological rhythm and ecological flow guarantee rate, the advantages and disadvantages of the six methods were compared and analyzed in the dry and flood periods, and the most suitable ecological flow calculation method for small watershed was obtained to determine the ecological flow. The results show that the ecological flow of Hongqi Reservoir section is between 0.12-1.52 m3/s, and the ecological flow of Puzhehei section is between 0.30-4.95 m3/s. The fitting coefficients of hydrological rhythm are 0.993 and 0.998, respectively. The ecological flow guarantee rate is at a good level, and the ecological flow selection result is reasonable. The results can provide a reference for similar national small watersheds to select appropriate calculation method to determine the ecological flow.

Qingshui River  /  ecological base flow  /  hydrological method  /  water regime  /  guarantee rate
Yang LI, Jin ZOU, Lei ZHANG, Lei LIU, Qi-bin ZHOU, Xiao HE, An-you LIU, Yi RONG. Study on Ecological Flow of Small Watershed Based on Hydrological Method[J]. Water Resources and Power, 2023 , 41 (8) : 52 -55 . DOI: 10.20040/j.cnki.1000-7709.2023.20221983
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20221983
  • Receive Date：2022-09-22
  • Online Date：2026-01-28
  • Published：2023-08-25
Article Data
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History
  • Received：2022-09-22
  • Revised：2022-11-01
Funding
Affiliations
    1.Department of Hydropower Engineering, Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China
    2.Yunnan Institute of Water Resource and Hydropower Research, Kunming 650228, China
    3.Yunnan Provincial Hydrological and Water Resources Bureau Qujing Substation, Qujing 655000, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2023.20221983
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表12种不同金属材料的力学参数
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Number of
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Number of
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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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