Climate change has induced sea-level rise and a high intensity of storms, which create high nearshore waves. These caused severe mangrove degradation and erosion along the coastal wetland areas in the Mekong Delta in Vietnam. Mangroves in the coastal wetland foreshore can withstand only some certain design storm waves and grow under several certain submerged conditions. Therefore, reducing waves and shallowing wetland elevation for recovering mangroves and protecting them in an early birth state is important. Bamboo or melaleuca fences have been used as a nature-based solution to reduce waves and currents approaching the shore for these above purposes along Vietnamese Mekong deltaic coasts. This paper investigates wave transmission through the bamboo fence system and assesses its effectiveness in protecting the mangroves. Waves were simultaneously measured at two locations for comparison: in front of and behind the fences. The result shows that the wave reduction by the fences is considerable, and sedimentation occurs rapidly in the shelter areas behind the fences, which is highly favorable for the recovery and growth of mangroves. Next, the empirical formulae have been proposed for relationships between the wave transmission coefficient of the fence and the dimensionless wave-structures parameters, such as the relative water depth, the wave steepness, and the fence freeboard. The findings create a basic technical reference for designing a naturally friendly-based solution by using bamboo and/or wooden fences in coastal protection generally and protecting mangroves specifically. The outcome of the research contributes to narrowing an existing gap in Vietnamese design guidelines for coastal wetland protection and also facilitates the use of locally available eco-friendly materials for coastal management along the Vietnamese Mekong delta coasts.
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Mykolas Romeris Univ, Environm Management Lab, Ate G 20, LT-08303 Vilnius, LithuaniaMykolas Romeris Univ, Environm Management Lab, Ate G 20, LT-08303 Vilnius, Lithuania
Inacio, M.
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Barboza, F. R.
Villoslada, M.
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Univ Eastern Finland, Dept Geog & Hist Studies, POB 111, Joensuu 80101, Finland
Estonian Univ Life Sci, Inst Agr & Environm Sci, Kreutzwaldi 5, EE-51006 Tartu, EstoniaMykolas Romeris Univ, Environm Management Lab, Ate G 20, LT-08303 Vilnius, Lithuania
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Univ Calif Santa Barbara, NCEAS, Santa Barbara, CA 93106 USAUniv Calif Santa Barbara, NCEAS, Santa Barbara, CA 93106 USA
Narayan, Siddharth
Beck, Michael W.
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Univ Calif Santa Cruz, Nat Conservancy, Santa Cruz, CA 95064 USAUniv Calif Santa Barbara, NCEAS, Santa Barbara, CA 93106 USA
Beck, Michael W.
Reguero, Borja G.
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UC Santa Cruz, Nat Conservancy, Dept Ocean Sci, Santa Cruz, CA USAUniv Calif Santa Barbara, NCEAS, Santa Barbara, CA 93106 USA
Reguero, Borja G.
Losada, Inigo J.
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Univ Cantabria, ETSI Caminos Canales & Puertos, Inst Hidraul Ambiental, E-39005 Santander, SpainUniv Calif Santa Barbara, NCEAS, Santa Barbara, CA 93106 USA
Losada, Inigo J.
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van Wesenbeeck, Bregje
Pontee, Nigel
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Univ Southampton, HILL CH2M, Coastal Planning & Engn, Swindon, Wilts, EnglandUniv Calif Santa Barbara, NCEAS, Santa Barbara, CA 93106 USA
Pontee, Nigel
Sanchirico, James N.
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Univ Calif Davis, Dept Environm Sci & Policy, Davis, CA 95616 USAUniv Calif Santa Barbara, NCEAS, Santa Barbara, CA 93106 USA
Sanchirico, James N.
Ingram, Jane Carter
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Columbia Univ, Wildlife Conservat Soc, New York, NY USAUniv Calif Santa Barbara, NCEAS, Santa Barbara, CA 93106 USA
Ingram, Jane Carter
Lange, Glenn-Marie
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World Bank, Environm & Nat Resources Global Practice, 1818 H St NW, Washington, DC 20433 USAUniv Calif Santa Barbara, NCEAS, Santa Barbara, CA 93106 USA
Lange, Glenn-Marie
Burks-Copes, Kelly A.
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US Army, Environm Lab, Engineer Res & Dev Ctr, Vicksburg, MS USAUniv Calif Santa Barbara, NCEAS, Santa Barbara, CA 93106 USA