Carbon storage

Saltmarsh makes an important contribution to climate change mitigation through its ability to absorb and store carbon, at a rate of up to 2.1 tonnes of carbon per hectare, per year. Restoring saltmarsh habitat through the NIA will play an important role in securing a more sustainable future for the Greater Thames.

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For example, using the UN Environment Programme’s estimate of the rate of carbon sequestration, and the latest figures for the price of carbon over the next 50 years, the carbon storage value of Wallasea Island will be £8.82 million over 50 years, once habitats are fully restored. By contrast, the current land use on site is a net emitter of carbon.