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Ecological Quality Status Evaluation of Port Sea Areas Based on EW-GRA-TOPSIS Model

Author

Listed:
  • Kun Lang

    (School of Maritime Economics and Management, Dalian Maritime University, Dalian 116026, China)

  • Lijun Gu

    (School of Maritime Economics and Management, Dalian Maritime University, Dalian 116026, China)

  • Zhiying Chen

    (School of Maritime Economics and Management, Dalian Maritime University, Dalian 116026, China)

  • Chunhui Niu

    (School of Maritime Economics and Management, Dalian Maritime University, Dalian 116026, China)

  • Lin Li

    (School of Foreign Studies, Minzu University of China, Beijing 100086, China)

  • Jinyuan Ma

    (School of Maritime Economics and Management, Dalian Maritime University, Dalian 116026, China)

Abstract

It is of great significance to research a method to evaluate the ecological quality status of port sea areas objectively for the ecological environmental protection and sustainable development of sea areas. In this paper, a novel ecological quality status evaluation model is proposed based on the entropy weight method (EW), the gray relational analysis method (GRA), and the TOPSIS method. Firstly, a comprehensive evaluation indicator system is constructed from three aspects, namely seawater quality, sediments, and marine organisms. Secondly, the weight values of different indicators are obtained via the EW method, which can be obtained more objectively than via the subjective weighting method. Afterwards, the ecological quality status of port sea areas can be evaluated using the proposed method, which combines the advantages of the TOPSIS method and the GRA method. Finally, the effectiveness of the proposed EW-GRA-TOPSIS model is illustrated by a case study based on a port sea area of Tianjin. The results show that 66.7% of the monitoring stations in the port sea area are at a good level, 25% of them are at a fair level, only 8.3% are at a poor level, and none are at an excellent or bad level. Additionally, the evaluation results obtained using the proposed model are more consistent with the actual survey results than the compared typical TOPSIS method. It can objectively reflect the ecological quality status of monitoring stations, and consequently, it could be helpful for the marine department to make decisions on the sustainable development of port sea areas. In a further study, the influence of decision makers’ preferences on the evaluation results could be considered, and a more reasonable method to determine the evaluation grade standard should be researched to improve the proposed model.

Suggested Citation

  • Kun Lang & Lijun Gu & Zhiying Chen & Chunhui Niu & Lin Li & Jinyuan Ma, 2023. "Ecological Quality Status Evaluation of Port Sea Areas Based on EW-GRA-TOPSIS Model," Sustainability, MDPI, vol. 15(11), pages 1-19, May.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:11:p:8809-:d:1159395
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    References listed on IDEAS

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    1. Xianyu Zhang & Yingqi Zhang & Qian Zhang & Peiwu Liu & Rui Guo & Shengyi Jin & Jiawen Liu & Lei Chen & Zhen Ma & Ying Liu, 2020. "Evaluation and Analysis of Water Quality of Marine Aquaculture Area," IJERPH, MDPI, vol. 17(4), pages 1-15, February.
    2. Qunzhen Qu & Sang-Bing Tsai & Mengxue Tang & Congjiang Xu & Weiwei Dong, 2016. "Marine Ecological Environment Management Based on Ecological Compensation Mechanisms," Sustainability, MDPI, vol. 8(12), pages 1-10, December.
    3. Xin Yu & Sid Suntrayuth & Jiafu Su, 2020. "A Comprehensive Evaluation Method for Industrial Sewage Treatment Projects Based on the Improved Entropy-TOPSIS," Sustainability, MDPI, vol. 12(17), pages 1-11, August.
    4. Shidong Wang & Zilong Bai & Jinjin Si & Cunwei Zhao, 2022. "Evaluation of Ecological Vulnerability and Analysis of Its Spatiotemporal Evolution Based on the Fuzzy Comprehensive Evaluation/Catastrophe Progression Method: A Case Study of the Danjiang River Basin," Sustainability, MDPI, vol. 14(21), pages 1-19, November.
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