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Cosmic exergy based ecological assessment for a wetland in Beijing

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  • Chen, Z.M.
  • Chen, B.
  • Chen, G.Q.

Abstract

Wetlands research and restoration has become one of the critical concern due to their importance in providing ecosystem services. This study proposes a holistic methodology to assess the wetland ecosystem based on cosmic exergy as a thermodynamic orientor. This new approach is applied to two typical wastewater treatment facilities (an activated sludge system and a cyclic activated sludge system) and to a constructed wetland ecosystem in Beijing for comparison. Results show that the Beijing wetland ecosystem gains positive net present ecological value of 3.08E+14 Jc regarding its total life cycle. Comparison with the activated sludge system and cyclic activated sludge system, shows that the wetland ecosystem has greater dependencies on local resources (22% vs. 0% vs. 0%) and renewable resources (67% vs. 38% vs. 31%) as well as a larger ecological sustainability index (0.64157 vs. 0.00005 vs. 0.00008). This implies that the wetland ecosystem is more environmentally friendly and sustainable method for water treatment.

Suggested Citation

  • Chen, Z.M. & Chen, B. & Chen, G.Q., 2011. "Cosmic exergy based ecological assessment for a wetland in Beijing," Ecological Modelling, Elsevier, vol. 222(2), pages 322-329.
    • Handle: RePEc:eee:ecomod:v:222:y:2011:i:2:p:322-329
    DOI: 10.1016/j.ecolmodel.2010.09.023
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    References listed on IDEAS

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    1. Chen, G.Q. & Jiang, M.M. & Yang, Z.F. & Chen, B. & Ji, Xi & Zhou, J.B., 2009. "Exergetic assessment for ecological economic system: Chinese agriculture," Ecological Modelling, Elsevier, vol. 220(3), pages 397-410.
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    3. Zhang, Bo & Chen, G.Q., 2010. "Physical sustainability assessment for the China society: Exergy-based systems account for resources use and environmental emissions," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(6), pages 1527-1545, August.
    4. Sciubba, Enrico, 2003. "Extended exergy accounting applied to energy recovery from waste: The concept of total recycling," Energy, Elsevier, vol. 28(13), pages 1315-1334.
    5. Wall, Göran, 1990. "Exergy conversion in the Japanese society," Energy, Elsevier, vol. 15(5), pages 435-444.
    6. Chen, G.Q. & Chen, B., 2009. "Extended-exergy analysis of the Chinese society," Energy, Elsevier, vol. 34(9), pages 1127-1144.
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    Cited by:

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    2. Wu, X.F. & Chen, G.Q. & Wu, X.D. & Yang, Q. & Alsaedi, A. & Hayat, T. & Ahmad, B., 2015. "Renewability and sustainability of biogas system: Cosmic exergy based assessment for a case in China," Renewable and Sustainable Energy Reviews, Elsevier, vol. 51(C), pages 1509-1524.
    3. Snyder, Brian F., 2019. "The Inclusion of Ecosystem Service Valuations in Bioenergy Cost Analysis: A Case Study of Constructed Wetlands in the Neotropics," Ecological Economics, Elsevier, vol. 156(C), pages 196-201.
    4. Kai Yin & Dengsheng Lu & Yichen Tian & Qianjun Zhao & Chao Yuan, 2014. "Evaluation of Carbon and Oxygen Balances in Urban Ecosystems Using Land Use/Land Cover and Statistical Data," Sustainability, MDPI, vol. 7(1), pages 1-27, December.
    5. Fan, Ying & Wu, Xudong & Wu, Xiaofang & Li, Chaohui & Yang, Qing & Hayat, Tasawar & Alsaedi, Ahmed & Wang, Ping & Chen, Guoqian, 2020. "A unified ecological assessment of a solar concentrating plant based on an integrated approach joining cosmic exergy analysis with ecological indicators," Renewable and Sustainable Energy Reviews, Elsevier, vol. 129(C).
    6. Shao, Ling & Wu, Zi & Chen, G.Q., 2013. "Exergy based ecological footprint accounting for China," Ecological Modelling, Elsevier, vol. 252(C), pages 83-96.
    7. Yang, Q. & Chen, G.Q. & Liao, S. & Zhao, Y.H. & Peng, H.W. & Chen, H.P., 2013. "Environmental sustainability of wind power: An emergy analysis of a Chinese wind farm," Renewable and Sustainable Energy Reviews, Elsevier, vol. 25(C), pages 229-239.
    8. Liu, Gengyuan & Yang, Zhifeng & Chen, Bin & Zhang, Lixiao, 2013. "Modelling a thermodynamic-based comparative framework for urban sustainability: Incorporating economic and ecological losses into emergy analysis," Ecological Modelling, Elsevier, vol. 252(C), pages 280-287.
    9. Shao, Ling & Wu, Zi & Zeng, L. & Chen, Z.M. & Zhou, Y. & Chen, G.Q., 2013. "Embodied energy assessment for ecological wastewater treatment by a constructed wetland," Ecological Modelling, Elsevier, vol. 252(C), pages 63-71.
    10. Liu, Gengyuan & Yang, Zhifeng & Chen, Bin & Ulgiati, Sergio, 2014. "Emergy-based dynamic mechanisms of urban development, resource consumption and environmental impacts," Ecological Modelling, Elsevier, vol. 271(C), pages 90-102.

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