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Modeling N transformation and removal in a duckweed pond: Model development and calibration

Author

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  • Peng, Jian-Feng
  • Wang, Bao-Zhen
  • Song, Yong-Hui
  • Yuan, Peng

Abstract

Based on the dynamics of total ammoniacal N (Nam), nitrate/nitrite (Nox) and organic nitrogen contained in sediment (Nsed), in water (Norg), and in hydrophyte pools (Nalgae+Ndw), respectively, a mathematical model was developed to predict N transformation processes in duckweed ponds. The availability and the sensibility of the transformation model were investigated correspondingly. The results showed that the transformation model could exactly simulate the annual variations of Nam, Nox, Nsed, Nalgae, and Ndw in a duckweed pond with the correlation coefficient ranging from 0.71 to 0.89. However, the simulated values of Norg were much lower than the measured values in windy winter, resulting in the correlation coefficient between them only being 0.61. Sensitivity analysis revealed that the model was a stable simulation system except the variable of Ndw. Further research should concentrate on a better understanding of the N transformation in duckweed, so as to make the model a more comprehensive and predictive tool.

Suggested Citation

  • Peng, Jian-Feng & Wang, Bao-Zhen & Song, Yong-Hui & Yuan, Peng, 2007. "Modeling N transformation and removal in a duckweed pond: Model development and calibration," Ecological Modelling, Elsevier, vol. 206(1), pages 147-152.
    • Handle: RePEc:eee:ecomod:v:206:y:2007:i:1:p:147-152
    DOI: 10.1016/j.ecolmodel.2007.03.029
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    Cited by:

    1. Sah, Leena & Rousseau, Diederik P.L. & Hooijmans, Christine M. & Lens, Piet N.L., 2011. "3D model for a secondary facultative pond," Ecological Modelling, Elsevier, vol. 222(9), pages 1592-1603.
    2. Małgorzata Krzywonos & Zdzisława Romanowska-Duda & Przemysław Seruga & Beata Messyasz & Stanisław Mec, 2023. "The Use of Plants from the Lemnaceae Family for Biofuel Production—A Bibliometric and In-Depth Content Analysis," Energies, MDPI, vol. 16(4), pages 1-24, February.
    3. Serpa, Dalila & Ferreira, Pedro Pousão & Caetano, Miguel & da Fonseca, Luís Cancela & Dinis, Maria Teresa & Duarte, Pedro, 2012. "Modelling of biogeochemical processes in fish earth ponds: Model development and calibration," Ecological Modelling, Elsevier, vol. 247(C), pages 286-301.
    4. Peng, Jian-feng & Wang, Bao-zhen & Song, Yong-hui & Yuan, Peng, 2007. "Modeling N transformation and removal in a duckweed pond: Model application," Ecological Modelling, Elsevier, vol. 206(3), pages 294-300.
    5. Liu, Yang & Chen, Xiaoyi & Wang, Xinhui & Fang, Yang & Zhang, Yin & Huang, Mengjun & Zhao, Hai, 2019. "The influence of different plant hormones on biomass and starch accumulation of duckweed: A renewable feedstock for bioethanol production," Renewable Energy, Elsevier, vol. 138(C), pages 659-665.

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