The following content is sponsored by the Carbon Streaming Corporation
Irrecoverable Carbon: The Importance of Preventing Deforestation
The Earth is home to some natural ecosystems that function as carbon vaults, storing massive amounts of carbon. Researchers developed the concept of “irrecoverable carbon” to identify areas on the basis of three criteria relevant for conservation:
- Manageability: How they can be influenced by direct and local human actions
- Vulnerability: The magnitude of carbon lost upon disturbance
- Recoverability: The recoverability of carbon stocks following loss
Applying the three criteria across all ecosystems reveals that some places contain carbon that humans can manage, and if lost, could not be recovered by 2050, when the world needs to reach net-zero to avoid the catastrophic effects of climate change.
The above graphic sponsored by Carbon Streaming Corporation charts global irrecoverable carbon by land area, highlighting important ecosystems of stored carbon.
Breaking Down the Earth’s Irrecoverable Carbon
According to researchers Noon, M.L., Goldstein, A. et al., natural ecosystems contain around 139.1 ± 443.6 gigatonnes (Gt) of irrecoverable carbon globally. (Because the amount of stored carbon cannot be negative, the researchers restrained the uncertainty to 0–582.7 Gt.)
Here’s a breakdown of global irrecoverable carbon by ecosystem type:
|Ecosystem||Total Irrecoverable Carbon (Gt)||% of Global Total|
|Tropical and subtropical forest||41.1||29.5%|
|Boreal and temperate peat||23.4||16.9%|
|Tropical and subtropical peat||15.8||11.4%|
|Tropical and subtropical wetland||9.9||7.1%|
|Tropical and subtropical grassland||6.5||4.7%|
|Salt marsh and seagrass||1.7||1.2%|
Generally, forests are among the most important stores of irrecoverable carbon, accounting for nearly half of the global total. This is because they contain various carbon sinks including trees, soil, and other living biomass.
Tropical and subtropical forests alone store around 30% of global irrecoverable carbon. These include evergreen tropical rainforests near the equator, where billions of trees absorb CO2 for photosynthesis and growth.
Peatlands, organic layers of soil composed of decaying plants and biomass, also contain around 28% of irrecoverable carbon. Additionally, wetlands and grasslands are also significant carbon vaults, making up 21% of the global total.
Protecting Carbon Vaults with Carbon Credits
The 139Gt of irrecoverable carbon in these ecosystems remains within human purview to manage.
However, destroying or degrading these ecosystems would release this carbon into the atmosphere, making climate goals much more difficult to achieve. Since 2010, agriculture, logging, and wildfires have caused emissions of at least 4Gt of irrecoverable carbon.
One way to protect these areas is through the creation of carbon offset projects under the REDD+ (Reducing Emissions from Deforestation and forest Degradation) framework created by the UN Framework Convention on Climate Change (UNFCC). These projects work to protect and preserve these ecosystems by avoiding deforestation from commercial activities, such as logging or agriculture, or improving forest management practices.
Carbon Streaming recognizes the importance of these types of carbon credit projects in reaching net-zero by 2050 and has carbon credit streams in REDD+ projects around the world, including the Rimba Raya Biodiversity Reserve Project in Indonesia and the Cerrado Biome Project in Brazil.
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