Kansai Airports Acquires J Blue Credit Certification Thanks to Seaweed Beds

Kansai Airports has quantified the amount of CO2 absorbed by seaweed growing on the seawall around the Kansai International Airport (KIX) islands and obtained J Blue Credit certification.

J Blue Credit certification is a credit certified, issued and managed by Japan Blue Economy Association (JBE). The certification and issuance are made after examination and verification by a third-party committee independent of JBE.

Carbon stored in the ocean by the actions of marine life is called “blue carbon,” and is attracting attention as a new sink for CO2. KIX island has adopted a gently sloping masonry revetment for most of its seawalls, creating a rich seaweed bed environment through years of nurturing, maintenance, and monitoring surveys.

This J Blue Credit certification publicly recognizes the amount of CO2 absorbed by these seaweed beds.

The recognition of CO2 absorption and fixation has demonstrated that the creation of the seaweed bed environment contributes not only to water purification and the supply of fishery resources as spawning and breeding grounds for fish and shellfish, but also to the reduction of CO2 emissions.

The Kansai Airports Group is also engaged in other various activities to reduce its environmental impact based on its long-term goal of achieving net zero greenhouse gas emissions by 2050.

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