Restoration of Seagrass Beds Using Biodegradable Bioplastic-Based Eco-Friendly Planting Frames
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Attaching eelgrass to eco-friendly planting frames made from biodegradable bioplastic on land
Korea National Park Service (KNPS)
The international community aims for carbon neutrality by 2050, recognizing the importance of "blue carbon" in marine ecosystems like seagrass beds. The Korea National Park Service is dedicated to enhancing carbon absorption through the restoration of eelgrass in Hallyeohaesang National Park.
Since 2018, restoration efforts faced challenges with initial transplantation methods showing variable success rates. In 2021, an eco-friendly planting frame using paper egg cartons was developed, but it was inefficient. The following year, biodegradable bioplastic frames were introduced, yet they were too light and restricted eelgrass growth.
In 2023, a new planting frame was created from biodegradable bioplastic with greater density, providing adequate space for eelgrass expansion. This frame was successfully used to restore seagrass beds along the Daegopo coast.
Last update: 24 Sep 2024
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Impacts
As a result of the pilot project using eco-friendly planting frames, we found that the frames were easily fixed to the seabed and the survival rate of eelgrass increased to 162% six months after transplantation. The extensive eelgrass beds formed provide crucial habitats for various marine organisms and serve as safe refuges for juvenile fish.
Additionally, the eco-friendly planting frames are made from biodegradable bioplastic materials that naturally decompose, thus solving waste disposal issues.
The Korea National Park Service is committed to continuing eco-friendly restoration projects using biodegradable bioplastic materials. We plan to expand these eco-friendly restoration efforts to other marine areas, such as salt marshes and coastal dunes.
Sustainable Development Goals
SDG 14 – Life below water
