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ISSN 1674-3075

主管 中华人民共和国水利部

主办 水利部中国科学院水工程生态研究所

2022年夏季汉江中下游水华生消驱动因子及其贡献率量化研究

2024. 2022年夏季汉江中下游水华生消驱动因子及其贡献率量化研究. 水生态学杂志, 45(1): 143-151. doi: 10.15928/j.1674-3075.202311090321
引用本文: 2024. 2022年夏季汉江中下游水华生消驱动因子及其贡献率量化研究. 水生态学杂志, 45(1): 143-151. doi: 10.15928/j.1674-3075.202311090321
CHA Xi-ni, XIN Xiao-kang, FU Ting, LI Jian, BAI Feng-peng, LIN Xiao, SHU Peng. 2024. Summer Driving Factors and Their Quantitative Contribution to Algae Bloom Occurrence and Demise in the Middle and Lower Hanjiang River in 2022. Journal of Hydroecology, 45(1): 143-151. doi: 10.15928/j.1674-3075.202311090321
Citation: CHA Xi-ni, XIN Xiao-kang, FU Ting, LI Jian, BAI Feng-peng, LIN Xiao, SHU Peng. 2024. Summer Driving Factors and Their Quantitative Contribution to Algae Bloom Occurrence and Demise in the Middle and Lower Hanjiang River in 2022. Journal of Hydroecology, 45(1): 143-151. doi: 10.15928/j.1674-3075.202311090321

2022年夏季汉江中下游水华生消驱动因子及其贡献率量化研究

  • 基金项目:

    国家重点研发项目(2021YFC3200304);湖北省面上基金项目(2022CFB374)

详细信息
    作者简介:

    查悉妮,1994年生,女,博士,工程师,主要从事生态水文研究。E-mail:zhaxini228@163.com

  • 中图分类号: X171.1

Summer Driving Factors and Their Quantitative Contribution to Algae Bloom Occurrence and Demise in the Middle and Lower Hanjiang River in 2022

  • Fund Project: 国家重点研发项目(2021YFC3200304);湖北省面上基金项目(2022CFB374)
  • 为探究2022年夏季长江流域“汛期反枯”极端水文条件下汉江中下游首次出现的蓝藻水华成因,选取叶绿素浓度为水华表征指标,考虑各环境因子间的多重共线性关系,采用偏最小二乘回归(PLSR)量化了不同环境因子对汉江中下游仙桃、宗关断面蓝藻水华生消的贡献率。结果表明:(1)仙桃断面叶绿素a浓度与水温、pH、溶解氧和总磷均呈显著正相关关系,与氮磷比呈显著负相关关系;宗关断面叶绿素a浓度与水温、pH、溶解氧均呈显著正相关关系,与日均水位、水位日变幅、流量、总磷和氨氮均呈显著负相关关系;(2)溶解氧、pH和水温对水华生消的贡献程度较高,对仙桃断面的贡献率分别为15.18%、13.68%和14.50%,对宗关断面的贡献率分别为18.06%、15.93%和15.65%;(3)基于偏最小二乘路径模型(PLS-PM)的环境因子解析显示,气象因子是2022年夏季汉江中下游蓝藻水华暴发的诱导因子,水华“萌发”时段可能与汉江中下游涝旱急转时段重叠。建议后续研究结合准确的中长期气象预报信息,在涝旱急转时段优化汉江中下游水华防控调度的下泄流量与下泄时机,提高水华防控效果。
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收稿日期:  2023-11-09

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