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Hydrological Rhythm Change of Shijiu Lake and Its Ecological Effect Under New River Lake Relationship
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Li-ya LUO1, Jian TONG1, Jie ZHOU2, Mai-tian PANG3, Yong WANG2
Water Resources and Power | 2023, 41(11) : 14 - 17
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Water Resources and Power | 2023, 41(11): 14-17
• HYDROLOGY, WATER RESOURCES AND ENVIRONMENT •
Hydrological Rhythm Change of Shijiu Lake and Its Ecological Effect Under New River Lake Relationship
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Li-ya LUO1, Jian TONG1, Jie ZHOU2, Mai-tian PANG3, Yong WANG2
Affiliations
  • 1.Jiangsu Hydrological and Water Resources Survey Bureau, Nanjing 210029, China
  • 2.Hydraulic Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210029, China
  • 3.College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
Published: 2023-11-25 doi: 10.20040/j.cnki.1000-7709.2023.20230493
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In order to quantitatively analyze the impact of upstream reservoirs and the operation of the Three Gorges Project on the hydrological rhythms of the lower reaches of the Yangtze River and lakes, M-K test, cumulative anomaly method, wavelet coherence spectrum method and other hydrological time series trend analysis methods with STL time series decomposition method were used to analyze the 49-year historical water level data of Sheshan Station at Lake Shijiu. The long-term change trend and law of hydrological rhythm of Lake Shijiu under the new relationship between Yangtze River and Lake Shuijiu were analyzed. The coherent relationship between hydrological rhythm changes and local meteorological factors were analyzed along with the ecological effects under the new river-lake relationship. Under the new river-lake relationship, the dry season is earlier and longer and the averaged water level is higher, the extreme low water level is more likely to occur, the variation is gentler, and it is difficult for high water level to happen. The extreme high water level in the flood season is lower and happens later, the averaged water level is lower, ends earlier, and the amplitude is gentler. The early dry season is beneficial to increase aquatic plant biomass, but the decrease of water level variation in dry season may cause biodiversity to decrease.

hydrological rhythms  /  ecological effects  /  Lake Shijiu  /  time series decomposition
Li-ya LUO, Jian TONG, Jie ZHOU, Mai-tian PANG, Yong WANG. Hydrological Rhythm Change of Shijiu Lake and Its Ecological Effect Under New River Lake Relationship[J]. Water Resources and Power, 2023 , 41 (11) : 14 -17 . DOI: 10.20040/j.cnki.1000-7709.2023.20230493
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20230493
  • Receive Date：2023-03-31
  • Online Date：2026-01-27
  • Published：2023-11-25
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History
  • Received：2023-03-31
  • Revised：2023-06-09
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Affiliations
    1.Jiangsu Hydrological and Water Resources Survey Bureau, Nanjing 210029, China
    2.Hydraulic Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210029, China
    3.College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2023.20230493
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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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