Ecological Restoration of Tropical Forests

Ecological restoration of tropical forests seeks to reverse the widespread loss of forest cover and associated biodiversity while reinstating critical ecosystem functions such as carbon sequestration, water regulation and habitat provision. Restoration encompasses a spectrum of approaches from passive recovery—allowing natural processes to prevail once disturbance ceases—to active methods that involve planting diverse native species or facilitating natural regeneration. Success is shaped by ecological drivers including pre-disturbance land use, landscape context and time elapsed since restoration began. Outcomes vary regionally and through successional trajectories, with some areas achieving rapid biomass accumulation but slower recovery of faunal diversity or soil functions. Restoration is essential not only for mitigating climate change and preserving endemic species, but also for supporting the livelihoods of local communities through the recovery of ecosystem services. Integrating ecological theory with socio-economic priorities and utilising both local knowledge and novel monitoring tools are fundamental to scaling effective interventions across the tropics.

Research from Nature Portfolio

Global meta-analytic work has identified the principal ecological drivers of forest restoration success, demonstrating that time since restoration, intensity of past disturbance and landscape fragmentation jointly determine the degree to which biodiversity and vegetation structure approach reference conditions. Although restoration markedly enhances species richness and canopy development compared with degraded states, full recovery to old-growth benchmarks often remains elusive even after decades. Complementary palaeoecological analyses using fossil pollen records across tropical regions have revealed that recovery rates differ substantially among continents and disturbance regimes, with forests exposed to recurrent natural disturbances exhibiting greater resilience than those recovering from human-induced impacts. These foundational insights emphasise the importance of aligning restoration strategies with regional legacies and disturbance histories to optimise long-term ecological outcomes.

Ecological Restoration of Tropical Forests publication trend

The graph below shows the total number of articles in ecological restoration of tropical forests across all publications each year (not limited to Nature Index journals).

Technical terms

Assisted Natural Regeneration: A restoration approach that accelerates forest recovery by creating favourable microsites for seedling establishment and attracting animal dispersers without large-scale planting.

Passive restoration: The spontaneous ecological recovery of a forest following the cessation of disturbance, without direct human planting or major interventions.

Recovery debt: The interim deficit in biodiversity and ecosystem functioning that accumulates between disturbance cessation and the attainment of reference-state conditions.

Successional trajectory: The progressive sequence of changes in species composition and ecosystem structure that occur during forest recovery.

Remote sensing: The use of satellite or aerial imagery to monitor changes in forest cover, biomass and structural complexity over time.

References

1. Disrupted montane forest recovery hinders biodiversity conservation in the tropical Andes. Global Ecology and Biogeography (2023).
2. How effective are perches in promoting bird-mediated seed dispersal for natural forest regeneration? A systematic review protocol. Environmental Evidence (2023).
3. A global meta-analysis on the ecological drivers of forest restoration success. Nature Communications (2016).
4. A global review of past land use, climate, and active vs. passive restoration effects on forest recovery. PLOS ONE (2017).
5. Restoration of ecosystem services in tropical forests: A global meta-analysis. PLOS ONE (2018).
6. Recovery and resilience of tropical forests after disturbance. Nature Communications (2014).