Pattern and dynamics of biomass stock in old growth forests: The role of habitat and tree size

Yuan, Zuoqiang; Gazol, Antonio; Wang, Xugao; Lin, Fei; Ye, Ji; Zhang, Zhaochen; Suo, Yanyan; Kuang, Xu; Wang, Yunyun; Jia, Shihong; Hao, Zhanqing

doi:10.1016/j.actao.2016.06.007

Cited by 16 publications

(7 citation statements)

References 57 publications

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“…, Yuan et al. ), our results suggest that this observation critically depends on the scale of investigation (Fig. ).…”

Section: Discussionmentioning

confidence: 48%

“…The variability of biomass loss in large trees was clearly lower among the 4-ha plots (coefficient of variation was 31%). While the mortality of large trees has been noted as the primary driver of biomass net change (Rutishauser et al 2010, Sist et al 2014, Yuan et al 2016, our results suggest that this observation critically depends on the scale of investigation (Fig. 2).…”

Section: Biomass Stock Of Large Treesmentioning

confidence: 63%

“…Yuan et al. () observed that carbon accumulation was almost entirely the result of the increase in stems of 30–70 cm diameter in the temperate Changbai forest (China) and Caspersen et al. () showed that dense hardwood stands dominated by small trees produced more wood than stands dominated by fewer large trees in Ontario (Canada).…”

Section: Discussionmentioning

confidence: 99%

“…In particular, Sist et al (2014) estimated that small trees (diameter = 20-40 cm) yielded 2.3 MgÁha À1 Áyr À1 while large trees (diameter ≥ 60 cm) yielded 0.5 MgÁha À1 Áyr À1 in Brazilian forests ( Table 1 in Sist et al 2014). Yuan et al (2016) observed that carbon accumulation was almost entirely the result of the increase in stems of 30-70 cm diameter in the temperate Changbai forest (China) and Caspersen et al (2011) showed that dense hardwood stands dominated by small trees produced more wood than stands dominated by fewer large trees in Ontario (Canada). Meakem et al (2017) also showed a decrease in the contribution to plot biomass gains with increasing tree size for trees larger than [10-50] cm diameter across three tropical forests in Panama.…”

Section: Biomass Stock Of Large Treesmentioning

confidence: 99%

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The limited contribution of large trees to annual biomass production in an old‐growth tropical forest

Ligot

Gourlet‐Fleury

Ouédraogo

et al. 2018

Ecological Applications

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Although the importance of large trees regarding biodiversity and carbon stock in old-growth forests is undeniable, their annual contribution to biomass production and carbon uptake remains poorly studied at the stand level. To clarify the role of large trees in biomass production, we used data of tree growth, mortality, and recruitment monitored during 20 yr in 10 4-ha plots in a species-rich tropical forest (Central African Republic). Using a random block design, three different silvicultural treatments, control, logged, and logged + thinned, were applied in the 10 plots. Annual biomass gains and losses were analyzed in relation to the relative biomass abundance of large trees and by tree size classes using a spatial bootstrap procedure. Although large trees had high individual growth rates and constituted a substantial amount of biomass, stand-level biomass production decreased with the abundance of large trees in all treatments and plots. The contribution of large trees to annual stand-level biomass production appeared limited in comparison to that of small trees. This pattern did not only originate from differences in abundance of small vs. large trees or differences in initial biomass stocks among tree size classes, but also from a reduced relative growth rate of large trees and a relatively constant mortality rate among tree size classes. In a context in which large trees are increasingly gaining attention as being a valuable and a key structural characteristic of natural forests, the present study brought key insights to better gauge the relatively limited role of large trees in annual stand-level biomass production. In terms of carbon uptake, these results suggest, as already demonstrated, a low net carbon uptake of old-growth forests in comparison to that of logged forests. Tropical forests that reach a successional stage with relatively high density of large trees progressively cease to be carbon sinks as large trees contribute sparsely or even negatively to the carbon uptake at the stand level.

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“…, Yuan et al. ), our results suggest that this observation critically depends on the scale of investigation (Fig. ).…”

Section: Discussionmentioning

confidence: 48%

Section: Biomass Stock Of Large Treesmentioning

confidence: 63%

Section: Discussionmentioning

confidence: 99%

Section: Biomass Stock Of Large Treesmentioning

confidence: 99%

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The limited contribution of large trees to annual biomass production in an old‐growth tropical forest

Ligot

Gourlet‐Fleury

Ouédraogo

et al. 2018

Ecological Applications

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“…Repeat census data together with biomass allometric equations can be used to quantify woody productivity and woody mortality fluxes at the stand level. Numerous studies have quantified biomass stocks and fluxes in Forest-GEO plots, and their variation over space and time (Chave et al, 2003;Chave et al, 2008;Valencia et al, 2009;Lin et al, 2012;Yuan et al, 2016Yuan et al, , 2019Zuleta et al, 2017;Ma et al, 2019;Rutishauser et al, 2019). A key advantage of ForestGEO plots for these studies is that their large size reduces sampling errors in these biomass stocks and fluxes, sampling errors which remain substantial even at the 1-ha scale (Wagner et al, 2010;Muller-Landau et al, 2014;Réjou-Méchain et al, 2014).…”

Section: Biomass and Carbon Storage And Fluxesmentioning

confidence: 99%

ForestGEO: Understanding forest diversity and dynamics through a global observatory network

Davies

Abiem

Salim

et al. 2021

Biological Conservation

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146

117

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ForestGEO is a network of scientists and long-term forest dynamics plots (FDPs) spanning the Earth's major forest types. ForestGEO's mission is to advance understanding of the diversity and dynamics of forests and to strengthen global capacity for forest science research. ForestGEO is unique among forest plot networks in its large-scale plot dimensions, censusing of all stems ≥1 cm in diameter, inclusion of tropical, temperate and boreal forests, and investigation of additional biotic (e.g., arthropods) and abiotic (e.g., soils) drivers, which together provide a holistic view of forest functioning. The 71 FDPs in 27 countries include approximately 7.33 million living trees and about 12,000 species, representing 20% of the world's known tree diversity. With >1300 published papers, ForestGEO researchers have made significant contributions in two fundamental areas: species coexistence and diversity, and ecosystem functioning. Specifically, defining the major biotic and abiotic controls on the distribution and coexistence of species and functional types and on variation in species' demography has led to improved understanding of how the multiple dimensions of forest diversity are structured across space and time and how this diversity relates to the processes controlling the role of forests in the Earth system. Nevertheless, knowledge gaps remain that impede our ability to predict how forest diversity and function will respond to climate change and other stressors. Meeting these global research challenges requires major advances in standardizing taxonomy of tropical species, resolving the main drivers of forest dynamics, and integrating plotbased ground and remote sensing observations to scale up estimates of forest diversity and function, coupled with improved predictive models. However, they cannot be met without greater financial commitment to sustain the long-term research of ForestGEO and other forest plot networks, greatly expanded scientific capacity across the world's forested nations, and increased collaboration and integration among research networks and disciplines addressing forest science.

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A culture of conservation: How an ancient forest plantation turned into an old‐growth forest reserve – The story of the Wamulin forest

et al. 2021

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Pattern and dynamics of biomass stock in old growth forests: The role of habitat and tree size

Cited by 16 publications

References 57 publications

The limited contribution of large trees to annual biomass production in an old‐growth tropical forest

The limited contribution of large trees to annual biomass production in an old‐growth tropical forest

ForestGEO: Understanding forest diversity and dynamics through a global observatory network

A culture of conservation: How an ancient forest plantation turned into an old‐growth forest reserve – The story of the Wamulin forest

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