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Restoring and Conserving Peatlands

Peatlands cover just 3–4% of the Earth's surface but store nearly 30% of global soil carbon. Despite their crucial role in climate regulation, these ecosystems are under significant threat from land-use change, drainage, and wildfires, turning them from carbon sinks into carbon sources. Restoring degraded peatlands is critical to combating climate change and preserving biodiversity, yet their accurate identification and monitoring remain challenging, especially in remote and vast areas.

Effective management of peatlands requires up-to-date, spatially explicit information on their extent, hydrological conditions, and vegetation health. Moreover, restoration projects need tools to monitor their progress and impact on carbon sequestration and ecosystem recovery.

Earth Observation (EO) provides a unique solution for addressing the challenges of peatland mapping and monitoring. Using data from satellites such as Sentinel-1 and Sentinel-2, EO enables:

  • Detection and mapping of peatland areas using spectral and radar data.
  • Monitoring of hydrological conditions, such as water table depth and soil moisture.
  • Tracking changes in vegetation cover, biomass, and land use over time.
  • Quantifying carbon storage and emissions potential.

The integration of EO with ground-truthing data and advanced algorithms provides robust tools for understanding peatland dynamics and supporting their conservation and restoration.

Key examples

Peatland Mapping

The "World Peatland" project, funded by ESA, uses Sentinel-1 SAR data and Sentinel-2 optical imagery to map peatlands across different biomes, including tropical, temperate, and boreal regions. By integrating spectral analysis with ground observations, the project identifies peatland extents and their ecological characteristics, enabling effective conservation planning.

Restoration Monitoring

Peatlands damaged by drainage or fire are tracked using EO data. For example, the World Peatland project uses indicators such as vegetation recovery (measured via NDVI and LAI indices), soil moisture levels, and land surface temperature to evaluate restoration success. These indicators help assess whether peatlands are transitioning from degraded states back to functioning ecosystems.

Carbon Accounting

EO-derived peatland data supports carbon accounting by quantifying biomass changes and monitoring water table levels. These data are integrated into carbon flux models, helping estimate the carbon sequestration potential of restored peatlands. This is vital for countries' reporting under frameworks like the Paris Agreement.

Further resources

Related ESA-funded projects

Relevant materials

  • Webinar series on EO Supporting Nature Conservation: here.

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