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Adding Tree Rings to North America's National Forest Inventories: An Essential Tool to Guide Drawdown of Atmospheric

Margaret E K Evans¹, R Justin DeRose², Stefan Klesse³

¹Assistant professor, University of Arizona, Tucson, Arizona, United States.

|March 4, 2022

Summary

Integrating tree-ring data into national forest inventories offers a unique method to track forest carbon capture and storage. This approach provides crucial insights for climate change mitigation and achieving emission reduction goals.

Keywords:

carbon accounting carbon sinks national forest inventory negative emissions technologies tree rings

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Area of Science:

Dendrochronology and Forest Ecology
Climate Change Science
Carbon Cycle Research

Background:

Tree-ring data offer annually resolved, long-term insights into tree growth.
Systematic sampling of tree rings can scale to estimate forest carbon dynamics globally.
Current forest inventories lack the temporal and spatial resolution to fully capture carbon dynamics.

Purpose of the Study:

To advocate for the systematic collection of tree-ring data within national forest inventories.
To highlight the potential of tree-ring data for understanding forest carbon capture and storage.
To address scientific uncertainties regarding forest greening versus browning trends.

Main Methods:

Leveraging existing national forest inventory plots across North America (Canada, United States, Mexico).
Integrating legacy tree-ring collections with new systematic sampling efforts.
Analyzing tree-ring data to quantify forest carbon dynamics over time.

Main Results:

A systematic tree-ring collection would provide unprecedented temporal and spatial resolution of forest carbon dynamics.
This data can help resolve key scientific uncertainties about forest health (greening vs. browning).
The initiative aligns with national commitments to reduce net greenhouse gas emissions.

Conclusions:

Implementing a North American tree-ring collection is a critical, timely opportunity.
This effort is essential for evidence-based climate change mitigation strategies.
Failing to act represents a missed opportunity for climate stabilization and repair.