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Assessing timber volume recovery after disturbance in tropical forests – A new modelling framework

Authors: Camille Piponiot; Géraldine Derroire; Laurent Descroix; Lucas Mazzei; Ervan Rutishauser; Plinio Sist; Bruno Hérault;

Assessing timber volume recovery after disturbance in tropical forests – A new modelling framework

Abstract

Abstract One third of contemporary tropical forests is designated by national forest services for timber production. Tropical forests are also increasingly affected by anthropogenic disturbances. However, there is still much uncertainty around the capacity of tropical forests to recover their timber volume after logging as well as other disturbances such as fires, large blow-downs and extreme droughts, and thus on the long-term sustainability of logging. We developed an original Bayesian hierarchical model of Volume Dynamics with Differential Equations (VDDE) to infer the dynamic of timber volumes as the result of two ecosystem processes: volume gains from tree growth and volume losses from tree mortality. Both processes are expressed as explicit functions of the forest maturity, i.e. the overall successional stage of the forest that primarily depends on the frequency and severity of the disturbances that the forest has undergone. As a case study, the VDDE model was calibrated with data from Paracou, a long-term disturbance experiment in a neotropical forest where over 56 ha of permanent forest plots were logged with different intensities and censused for 31 years. With this model, we could predict timber recovery at Paracou at the end of a cutting cycle depending on the logging intensity, the rotation cycle length, and the proportion of commercial volume. The VDDE modelling framework developed presents three main advantages: (i) it can be calibrated with large tree inventories which are widely available from national forest inventories or logging concession management plans and are easy to measure, both on the field and with remote sensing; (ii) it depends on only a few input parameters, which can be an advantage in tropical regions where data availability is scarce; (iii) the modelling framework is flexible enough to explicitly include the effect of other types of disturbances (both natural and anthropogenic: e.g. blow-downs, fires and climate change) on the forest maturity, and thus to predict future timber provision in the tropics in a context of global changes.

Country
France
Keywords

Reconstitution forestière, [SDV]Life Sciences [q-bio], Production forestière, Ecosystem modelling, forêt tropicale, 333, Recovery, K01 - Foresterie - Considérations générales, K70 - Dégâts causés aux forêts et leur protection, 580, Tropical forest management, modèle de croissance forestière, Disturbance, Régénération naturelle, [SDV] Life Sciences [q-bio], Sustainability, Développement durable, Forêt, P01 - Conservation de la nature et ressources foncières, U40 - Méthodes de relevé, Gestion de l'environnement, agrovoc: agrovoc:c_13802, agrovoc: agrovoc:c_35332, agrovoc: agrovoc:c_3093, agrovoc: agrovoc:c_5090, agrovoc: agrovoc:c_3062, agrovoc: agrovoc:c_3061, agrovoc: agrovoc:c_24904, agrovoc: agrovoc:c_1374844914634, agrovoc: agrovoc:c_37875

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    citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    25
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
25
Top 10%
Average
Top 10%