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Remote Sensing Technology and Application, Volume. 39, Issue 1, 170(2024)

Chlorophyll-a Concentration Inversion based on GF6-WFV Data in a Typical Lake Reservoir in Eastern China

BU Bo1,2,3、*, Fangfang ZHANG2,3, Junsheng LI2,3,4, Shenglei WANG2,3, Jingyi LI1, Ya XIE3,5, Chao WANG6, Ruidan SANG7, and Bin TIAN8
Author Affiliations
  • 1Shaanxi Provincial Key Laboratory of Disaster Monitoring and Mechanism Simulation/College of Geography and Environment，Baoji University of Arts and Sciences，Baoji 721013，China
  • 2International Research Center of Big Data for Sustainable Development，Beijing 100094，China
  • 3Key Laboratory of Digital Earth，Institute of Aerospace Information Innovation，Chinese Academy of Sciences，Beijing 100094，China
  • 4University of Chinese Academy of Sciences，Beijing 100049，China
  • 5School of Geosciences and Resources，China University of Geosciences （Beijing），Beijing 100083，China
  • 6Institute of Geography，Henan Academy of Sciences，Zhengzhou 450052，China
  • 7Henan Polytechnic University，Jiaozuo 450000，China
  • 8China University of Mining and Technology，Xuzhou 221116，China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (11)
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    References (43)
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    Figures & Tables(11)
    Distribution map of study area and sampling points

    Fig. 1. Distribution map of study area and sampling points

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    In-situ measured spectral graph

    Fig. 2. In-situ measured spectral graph

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    Technical flow of chlorophyll a concentration inversion based on GF6-WFV data

    Fig. 3. Technical flow of chlorophyll a concentration inversion based on GF6-WFV data

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    Accuracy evaluation of GF6-WFV atmospheric correction

    Fig. 4. Accuracy evaluation of GF6-WFV atmospheric correction

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    Construction of chlorophyll a concentration inversion model

    Fig. 5. Construction of chlorophyll a concentration inversion model

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    Precision evaluation of chlorophyll a concentration inversion results

    Fig. 6. Precision evaluation of chlorophyll a concentration inversion results

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    Chlorophyll a concentration inversion based on GF6-WFV image in 2BDA model

    Fig. 7. Chlorophyll a concentration inversion based on GF6-WFV image in 2BDA model

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    The GF6-WFV data "seam" phenomenon of Luhun Reservoir on May 21， 2021. The reflectance data in the figure has been magnified by 10 000 times

    Fig. 8. The GF6-WFV data "seam" phenomenon of Luhun Reservoir on May 21， 2021. The reflectance data in the figure has been magnified by 10 000 times

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    • Table 1. Data acquisition condition

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      Table 1. Data acquisition condition

      实验日期研究区GF6影像日期采样点数MODIS气溶胶数据能见度/km
      2019年5月21日~22日白洋淀2019年5月22日130.282 317.37
      2019年5月22日官厅水库2019年5月6日150.381 011.94
      2021年5月20日陆浑水库2021年5月21日120.190 028.51
      2019年5月1日太湖2019年5月4日70.535 57.80
      2020年9月5日太湖2020年9月7日170.512 88.23
      2020年10月22日小浪底水库2020年10月25日180.504 98.39
      2021年6月4日小浪底水库2021年6月6日170.283 717.26
      2018年11月1日于桥水库2018年11月3日130.894 34.10
      2018年11月22日于桥水库2018年11月27日110.191 028.33
      2019年10月8日于桥水库2019年10月8日180.165 733.84

    • Table 2. Statistical table of measured chlorophyll a concentration in water

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      Table 2. Statistical table of measured chlorophyll a concentration in water

      序号实验日期地点采样点数目最小值/(mg/m3)最大值/(mg/m3)平均值/(mg/m3)
      12019年5月21日~22日白洋淀133.9117.4210.66
      22019年5月22日官厅水库155.3018.0411.67
      32021年5月20日陆浑水库126.0517.0911.57
      42019年5月1日太湖711.7849.4830.63
      52020年9月5日太湖174.8431.8718.35
      62020年10月22日小浪底水库183.9617.6310.80
      72021年6月4日小浪底水库174.0617.4710.77
      82018年11月1日于桥水库1317.4844.5231.00
      92018年11月22日于桥水库1113.2338.7726.00
      102019年10月8日于桥水库185.4999.2152.35

    • Table 3. Inversion models of water chlorophyll a concentration were commonly used

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      Table 3. Inversion models of water chlorophyll a concentration were commonly used

      序号简称GF6-WFV光谱指数参考文献
      12BDAR660/R710Mittenzwey等（1992）
      2FLHR660-R555-((660-555)/(710-555))*(R710-R555)Letelier等（1996）
      3BRR710/R610Gurlin等（2011）
      4NDCIX = (R710-R660)/(R710+R660)Mishra等（2012）
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    BU Bo, Fangfang ZHANG, Junsheng LI, Shenglei WANG, Jingyi LI, Ya XIE, Chao WANG, Ruidan SANG, Bin TIAN. Chlorophyll-a Concentration Inversion based on GF6-WFV Data in a Typical Lake Reservoir in Eastern China[J]. Remote Sensing Technology and Application, 2024, 39(1): 170

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    Paper Information

    Category: Research Articles

    Received: Jan. 5, 2023

    Accepted: --

    Published Online: Jul. 22, 2024

    The Author Email: Bo BU (1244717021@qq.com)

    DOI:10.11873/j.issn.1004-0323.2024.1.0170

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology