Tropical Forest Dynamics and Climate Interactions

Tropical forests are dynamic systems characterised by continuous processes of growth, mortality and regeneration that drive biodiversity, carbon storage and local‐to‐global climate regulation. These ecosystems sequester vast amounts of carbon in living biomass and soils, thus moderating atmospheric carbon dioxide concentrations and influencing temperature and precipitation patterns. Disturbances such as selective logging, land‐use conversion and extreme climatic events alter forest structure and function, with consequences for carbon fluxes, water cycling and biodiversity. Microclimatic buffering within intact canopies mitigates temperature extremes, supporting sensitive species and sustaining ecosystem services. Nutrient cycling—mediated through litterfall, root uptake and microbial activity—underpins productivity and resilience in nutrient‐poor soils. The interplay between disturbance, structural recovery and climatic forcing creates feedbacks that determine whether tropical forests act as carbon sinks or sources. Understanding these interactions is critical for informing conservation strategies, restoration efforts and land‐management policies that aim to maintain forest health, enhance climate resilience and secure the global benefits of tropical forest ecosystems.

Research from Nature Portfolio

Recent studies have revealed record‐height trees in remote Amazonian sites, prompting innovative climbing and remote sensing efforts to document their contribution to carbon storage and canopy dynamics. These findings highlight the importance of emergent giants in long‐term biomass accumulation and illustrate the challenges of accessing and monitoring such rare individuals. Parallel work in agricultural landscapes has shown that spatially variable set‐aside designs in oil‐palm plantations can double biodiversity and above‐ground carbon storage without reducing cultivated area. By targeting riparian corridors and steep slopes for uncultivated buffers, this approach optimises ecological outcomes while sustaining agricultural productivity, demonstrating scalable strategies for reconciling land‐use demands with climate mitigation goals.

Research from all publishers

Field experiments in Borneo indicate that actively restored logged forests exhibit high initial seedling densities but suffer elevated early mortality and lower species evenness compared with unlogged stands. These patterns suggest long-term barriers to regeneration despite silvicultural interventions. In Malaysian tropical forests, complete carbon budgets measured over logging and recovery phases reveal that degraded sites remain persistent net carbon sources for at least a decade post-logging, driven by soil and necromass losses that offset rapid woody biomass gains. Moreover, terrestrial LiDAR surveys demonstrate that selective logging reduces canopy height and plant area density, eroding the forest’s capacity to buffer macroclimate variability. Understory temperatures in heavily logged plots exceed ambient macroclimate during heat extremes, underscoring the need for disturbance management to preserve microclimatic refugia.

Tropical Forest Dynamics and Climate Interactions publication trend

The graph below shows the total number of articles in tropical forest dynamics and climate interactions across all publications each year (not limited to Nature Index journals).

Technical terms

Aboveground biomass: The total mass of living vegetation above the soil, including stems, branches and foliage, expressed per unit area.

Carbon sink/source: A reservoir or process that respectively absorbs more carbon than it emits (sink) or emits more than it absorbs (source) over a defined period.

Canopy structure: The three‐dimensional arrangement of foliage and branches in the upper layer of a forest that influences light interception and microclimate.

Microclimate buffering: The capacity of vegetation, especially forest canopies, to reduce temperature and humidity fluctuations beneath the canopy.

Net ecosystem exchange: The balance of carbon dioxide uptake and release by an ecosystem, combining photosynthesis, respiration and decomposition fluxes.

Selective logging: The targeted removal of individual trees or specific species from a forest, often altering structural complexity and ecological function.

References

1. Finding the Amazon’s tallest trees — an epic quest to reach hidden giants. Nature (2023).
2. Enhancing the ecological value of oil palm agriculture through set-asides. Nature Sustainability (2023).
3. Bornean tropical forests recovering from logging at risk of regeneration failure. Global Change Biology (2024).
4. Tropical forests post-logging are a persistent net carbon source to the atmosphere. Proceedings of the National Academy of Sciences of the United States of America (2023).
5. Structural changes caused by selective logging undermine the thermal buffering capacity of tropical forests. Agricultural and Forest Meteorology (2024).