What if one of the most powerful tools for slowing climate change was… a bog, a peatland, or a marsh?
Long considered unproductive land, wetlands are now emerging as essential ecosystems for carbon storage, biodiversity protection, and climate resilience and are unexpected allies for fighting climate change. In Quebec and across Canada, preserving and restoring these environments offers practical, nature-based solutions to help continuously improve our carbon footprint.
True Carbon Sinks
Wetlands—especially peatlands—have a unique ability to absorb and store massive amounts of atmospheric carbon. In Northern Ontario, peatlands alone store around 1.3 gigatonnes of carbon—the equivalent of the emissions from 24 million cars over 40 years.
That’s the conclusion of Ontario Nature in its study on these quiet but crucial ecosystems.
This remarkable capacity stems from the slow decomposition of organic matter in water-saturated soils, which prevents carbon from being released into the atmosphere.
As a result, wetlands act as long-term carbon reservoirs, accumulating carbon for centuries, even millennia.
A Tangible Climate Lever
In Canada’s Prairies, a study on wetland restoration showed that efforts could capture around 3.25 tonnes of CO₂ equivalent per hectare per year. Over a 33-year program, this would mean a total reduction of 12 million tonnes of CO₂—a meaningful contribution to climate goals.
The good news? This potential isn’t limited to Western Canada. In Quebec, several initiatives are underway to better measure and harness this ecological service. The Université du Québec à Montréal (UQAM) and the PALEO research center are conducting in-depth work on carbon sequestration in southern Quebec’s wetland soils. The provincial government has invested nearly $9 million to support this strategic research.
Restoration, Conservation, and Nature-Based Solutions
Wetlands do more than store carbon. They filter water, prevent floods, support rich biodiversity, and mitigate the impacts of extreme weather events. Their integration into land use planning and climate resilience strategies is now a major priority.
New methodological guides are available to help estimate carbon stocks in wetland soils. These tools empower municipalities, farmers, and land planners to make informed decisions aligned with continuous carbon improvement principles.
Organizations like Ducks Unlimited Canada, as well as national initiatives like the Pan-Canadian Wetlands & Grasslands Roadmap, are paving the way for broader inclusion of wetlands in climate action strategies.
A Race Against Time
But urgent action is needed. When wetlands are drained or degraded, they stop capturing carbon and may even emit greenhouse gases like methane (CH₄). A study published in ScienceDirect found it takes 60 to 130 years for a restored wetland to become a net carbon sink again. Protecting intact wetlands is therefore a top priority.
Nature Conservancy Canada emphasizes the importance of preserving healthy wetlands, which store carbon accumulated over thousands of years. Once lost, this carbon capital is extremely difficult to rebuild.
An Opportunity for Communities and SMEs
Beyond government institutions, wetlands can also serve as local climate action tools for municipalities, farms, and even small and medium-sized enterprises (SMEs). Supporting wetland conservation or restoration can contribute to carbon compensation, while also enhancing local biodiversity and quality of life.
To read other climate related news by Planetair, click here.
Sources:
Ontario Nature – Wetlands are Carbon Storage Superstars: https://ontarionature.org
Ducks Unlimited Canada – Wetlands as nature-based climate change solutions: https://www.ducks.ca
Carbonique – Research on wetlands in Quebec: https://www.carbonique.ca
ScienceDirect – Carbon sequestration potential of wetlands: https://www.sciencedirect.com
Nature Conservancy Canada – Protecting intact wetlands: https://www.natureconservancy.ca
UQAM – Carbon sequestration: Quebec allocates nearly $9M: https://www.cpaleo.uqam.ca
Pan Canadian Framework – Wetlands & Grasslands Roadmap: https://www.abnawmp.ca
Inventory Guide – Estimating carbon stocks in wetlands: https://www.environnement.gouv.qc.ca
