Tree Diversity Increases Carbon Stocks and Fluxes Above—But Not Belowground in a Tropical Forest Experiment DOI Creative Commons
Florian Schnabel, Joannès Guillemot, Kathryn E. Barry

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(2)

Published: Feb. 1, 2025

ABSTRACT International commitments advocate large‐scale forest restoration as a nature‐based solution to climate change mitigation through carbon (C) sequestration. Mounting evidence suggests that mixed compared monospecific planted forests may sequester more C, exhibit lower susceptibility extremes and offer broader range of ecosystem services. However, experimental studies comprehensively examining the control tree diversity on multiple C stocks fluxes above‐ belowground are lacking. To address this gap, we leverage data from Sardinilla experiment in Panama, oldest tropical experiment, which features gradient one‐, two‐, three‐ five‐species mixtures native species. Over 16 years, measured fluxes, ranging aboveground over leaf litter production, soil organic (SOC). We show significantly increased with 57% higher gain monocultures (35.7 ± 1.8 vs. 22.8 3.4 Mg ha −1 ) years after planting. In contrast, observed net reduction SOC (on average −11.2 1.1 across levels) no significant difference 3 (the predominantly tree‐derived, i.e., plant‐derived fraction) between (13.0 0.9 15.1 1.3 ). Positive effects persisted despite repeated strengthened time for growth. Structural equation models showed growth enhanced coarse woody debris soil, resulting tightly linked cycle aboveground. did not observe links fluxes. Our study elucidates mechanisms bolsters potential restoration. Restoration schemes should prioritize forests.

Language: Английский

Tree Diversity Increases Carbon Stocks and Fluxes Above—But Not Belowground in a Tropical Forest Experiment DOI Creative Commons
Florian Schnabel, Joannès Guillemot, Kathryn E. Barry

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(2)

Published: Feb. 1, 2025

ABSTRACT International commitments advocate large‐scale forest restoration as a nature‐based solution to climate change mitigation through carbon (C) sequestration. Mounting evidence suggests that mixed compared monospecific planted forests may sequester more C, exhibit lower susceptibility extremes and offer broader range of ecosystem services. However, experimental studies comprehensively examining the control tree diversity on multiple C stocks fluxes above‐ belowground are lacking. To address this gap, we leverage data from Sardinilla experiment in Panama, oldest tropical experiment, which features gradient one‐, two‐, three‐ five‐species mixtures native species. Over 16 years, measured fluxes, ranging aboveground over leaf litter production, soil organic (SOC). We show significantly increased with 57% higher gain monocultures (35.7 ± 1.8 vs. 22.8 3.4 Mg ha −1 ) years after planting. In contrast, observed net reduction SOC (on average −11.2 1.1 across levels) no significant difference 3 (the predominantly tree‐derived, i.e., plant‐derived fraction) between (13.0 0.9 15.1 1.3 ). Positive effects persisted despite repeated strengthened time for growth. Structural equation models showed growth enhanced coarse woody debris soil, resulting tightly linked cycle aboveground. did not observe links fluxes. Our study elucidates mechanisms bolsters potential restoration. Restoration schemes should prioritize forests.

Language: Английский

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