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Collecting and Processing Drone-based Remotely Sensed Data for Use in Forest Recovery Monitoring
Published on: October 24, 2025
603
Tree carbon allocation explains forest drought-kill and recovery patterns
A T Trugman1, M Detto2, M K Bartlett2
1Department of Biology, University of Utah, Salt Lake City, UT, 84112, USA.
Ecology Letters
|August 21, 2018
Summary
Trees may survive droughts by repairing water transport tissues, with recovery time depending on size. Optimal carbon allocation post-drought explains delayed tree mortality and aids future resilience, especially with increased CO2 fertilization.
Area of Science:
- Ecology
- Climate Change Biology
- Forest Science
Background:
- Tree mortality is a critical factor in the terrestrial carbon cycle and climate change.
- Delayed tree mortality after drought events is a globally observed phenomenon.
- Understanding drought response mechanisms is crucial for predicting forest dynamics.
Purpose of the Study:
- To investigate the mechanisms behind delayed tree mortality following drought.
- To develop a predictive framework for tree recovery after drought stress.
- To explain the relationship between tree size and drought-induced mortality.
Main Methods:
- Utilized a combination of meta-analysis of global observations.
- Employed tree physiological models to simulate recovery processes.
- Analyzed carbon allocation strategies in trees post-drought.
Main Results:
- Optimal carbon allocation after drought is key to delayed mortality and recovery.
- Trees regrow damaged xylem to repair water transport tissues and achieve positive carbon balance.
- Recovery time for xylem function increases with tree size, explaining size-dependent mortality.
Conclusions:
- Delayed tree mortality is explained by the time required for xylem repair and carbon balance restoration.
- Tree size significantly influences drought recovery duration and mortality risk.
- Future CO2 fertilization may enhance tree resilience to drought by accelerating xylem regrowth.
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