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Updated: Aug 14, 2026
08:16
Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity
Published on: March 13, 2014
Heterogeneous climatic controls on tropical-forest biomass
Matheus Henrique Nunes1, Helene C Muller-Landau2, Eric Bastos Görgens3
1NASA Global Ecosystem Dynamics Investigation (GEDI), Department of Geographical Sciences, University of Maryland, College Park, MD, USA. mhnunes@umd.edu.
Nature
|August 12, 2026
Summary
Tropical forest aboveground biomass (AGB) varies with climate across regions. Temperature impacts Congo Basin forests most, while water limits Southeast Asian forests, highlighting complex climate-soil-topography interactions.
Area of Science:
- Ecology
- Climate Science
- Forestry
Background:
- Tropical forest aboveground biomass (AGB) is vital for the global carbon cycle.
- Understanding AGB's response to climate change is crucial for predicting climate-carbon feedbacks.
- Previous studies show conflicting findings on climate-AGB associations, with debate on regional vs. methodological differences.
Purpose of the Study:
- To investigate how climatic variables differentially relate to AGB on pantropical scales.
- To analyze spaceborne-LiDAR-derived AGB estimates across intact lowland forests in the Amazon, Congo Basin, and Southeast Asia.
- To reconcile conflicting findings by examining regional variations and methodological differences.
Main Methods:
- Analysis of approximately 16 million spaceborne-LiDAR-derived AGB estimates for 2020.
- Focus on intact lowland forests in the Amazon, Congo Basin, and Southeast Asia.
- Investigation of relationships between climatic variables (temperature, drought) and AGB, considering environmental context (aridity, soil, topography, disturbance).
Main Results:
- Climatic associations with AGB are heterogeneous and context-dependent.
- Temperature is a dominant factor in drier forests; Congo Basin AGB is most sensitive to warming.
- Southeast Asian forests show the strongest AGB declines with increasing water limitation; storms impact tall forests.
Conclusions:
- Previously conflicting findings are reconciled by demonstrating heterogeneous climate-AGB relationships.
- Predicting tropical forest carbon storage requires accounting for interactions among climate, disturbance, soil, and topography.
- Biogeographical context significantly modifies the impact of climate and disturbance on tropical forest AGB.
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