A nature-based solution for sustainable port development in Port of Kuala Tanjung, Indonesia

P. Taneja, A.P.L. van der Hoek, M. van Koningsveld

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Abstract

The Building with Nature (BwN) approach developed by Ecoshape suggests that nature-based solutions can be sustainable and cost-effective alternatives for traditional engineering solutions. Widening the solution space by studying and understanding the physical and ecological system in the early stages of port planning and design is more likely to result in sustainable ports with opportunities for multi-functionality and respect for nature. This paper applies the BwN philosophy to a case study, i.e., the ongoing port development in Kuala Tanjung in Indonesia and examines the technical and financial feasibility of a nature-based concept, i.e., a mangrove breakwater instead of a traditional 'hard' breakwater. Mangroves can realize significant wave attenuation, and at the same time, they are productive eco-systems that can result in long-term benefits through multifunctional land use. A berm built of dredged material with a mild slope which 'grows' naturally by accretion behind permeable dams can create the right conditions for mangrove trees to grow. This mangrove protection can develop into a sustainable barrier which grows with the (relative) sea level rise by trapping sediments. A preliminary design was made on the basis of information available in literature. A rough cost comparison considering only the supply and placing of fill material showed that mangrove breakwater is about 25percent more expensive than a hard breakwater for the case under study. In view of the numerous port projects being planned in Indonesia, the technical and financial feasibility of mangrove breakwaters that can also enhance nature create added value for the surroundings is a promising finding.
Original languageEnglish
Article number51
Number of pages7
JournalProceedings of the Coastal Engineering Conference
Volume36V
DOIs
Publication statusPublished - 2020
EventICCE 2020: International Conference on Coastal Engineering (Virtual) -
Duration: 6 Oct 20209 Oct 2020

Keywords

  • port master planning
  • Building with Nature
  • sustainable port
  • mangrove breakwater
  • Ecosystem Services

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