Eco-friendly Biopolymer for Sustainable Coastal Erosion Prevention

KNPS
Publicado: 15 Noviembre 2021
Última edición: 17 Noviembre 2021
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Summary

Korea National Park Service (KNPS) succeeded in restoring the eroded coast of Gwanmae-do Island, Jindo-gun, in the Dadohaehaesang National Park with eco-friendly technology using biopolymer-based natural paving materials.

The existing techniques to prevent coastal erosion, using cement concrete structures or natural stone masonry, cause physical problems, such as dislocation and cracking over time after construction. In addition, cement structures loose toxic substances, which destroy the surrounding ecosystem and adversely affect nearby landscapes.

A biopolymer-based natural paving material is the blend of high-molecular compounds extracted from plants and natural aggregates such as gravels. It contains many pores on the surface and inside. Therefore, when a strong wave hits the surface, seawater is dispersed between the pores, which significantly lowers the wave energy and increases the durability of the structure.

Classifications

Region
Asia del Este
Scale of implementation
Local
Ecosystem
Bosques costeros
Ecosistemas marinos y costeros
Montaña submarine / dorsal oceánica
Playa
Theme
Adaptación al cambio climático
Ciencia y investigación
Comunicación y divulgación
Conectividad / conservación transfronteriza
Especies y la extinción
Gestión de tierras
Gobernanza de las áreas protegidas y conservadas
Institucionalización de la biodiversidad
Islas
Manejo de bosques
Manejo espacial de la zona marino-costera
Mantenimiento de infraestructura
Medios de vida sostenibles
Mitigación del cambio climático
Ordenamiento territorial terrestre
Prevención de erosión
Reducción de desastres
Restauracion
Turismo
Species Conservation and One Health Interventions
Seguimiento e investigación de especies
Manejo intensivo de especies (in situ o ex situ)
Planificación de la conservación de especies
Challenges
Degradación de tierras y bosques
Aumento del nivel del mar
Cambio estacional
Mareas altas (tormentas)
Ciclones tropicales / tifones
Tsunami/Marejada
Erosión
Pérdida de ecosistemas
Especies invasoras
Falta de acceso a financiación a largo plazo
Cambios en el contexto socio-cultural
Falta de conciencia del público y de los responsables de la toma de decisiones
Sustainable development goals
ODS 11 - Ciudades y comunidades sostenibles
ODS 13 - Acción por el clima
ODS 15 - Vida de ecosistemas terrestres
Aichi targets
Meta 2: Valores de biodiversidad integrados
Meta 5: Pérdida de hábitat reducida a la mitad o reducida
Meta 10: Ecosistemas vulnerables al cambio
Meta 11: Áreas protegidas y conservadas
Meta 15: Restauración de ecosistemas y resiliencia

Ubicación

Jindo-gun, Jeollanam-do, South Korea
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Impacts

The use of biopolymer-based natural paving material has been piloted, tested and monitored by the Dadohaehaesang National Park since October 2012. Biopolymer hardens underwater, which helped to consolidate the construction. The strength of the material does not decrease, even when exposed to seawater for a long time and even severe typhoons.

The results of the restored areas monitoring show that sand was deposited between the natural paving materials and various plants living in the sand dune, such as Calystegia soldanella grew well to maintain a natural coastal landscape. The erosion prevention effect was also excellent, and it even played a role in protecting the forest of Pinus thunbergii located at the back of the coast.

KNPS continues to promote restoration projects by using biopolymer-based eco-friendly method, and plans to expand eco-friendly restoration projects to other areas such as trails.

Contribuido por

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Korea National Park Service - KNPS Korea National Park Service