Conference
Carbon stocks in tropical forests: disentangling the response of forest structural components to environmental drivers across spatial scales
| العنوان: | Carbon stocks in tropical forests: disentangling the response of forest structural components to environmental drivers across spatial scales |
|---|---|
| المؤلفون: | Depoortere, Pauline, Bauman, David, Fayolle, Adeline, Bastin, Jean-François |
| المصدر: | IUFRO 26th world congress, Forest & society towards 2050, Stockholm, Sweden [SE], 28-06-2024 - 6-07-2024 |
| سنة النشر: | 2024 |
| مصطلحات موضوعية: | Life sciences, Environmental sciences & ecology, Sciences du vivant, Sciences de l’environnement & écologie |
| الوصف: | The critical role of tropical forests in the global carbon cycle is well-known. Yet, there remainuncertainties regarding the spatial distribution of forest aboveground carbon stocks (AGC) substantiallylimiting our potential to develop relevant conservation and restoration strategies for these ecosystems. Inparticular, the lack of convincing relationships between forest AGC and its environmental driversrepresents an unstated and major source of uncertainty. In this study, we hypothesize that this lack ofconsensus results from the omission of a key concept in forest ecology: the AGC of a forest communityis not a single entity but the product of distinct forest structural components (e.g. basal area, meanquadratic diameter, stem density and wood density weighted by basal area) each responding differently,and sometimes antagonistically, to environmental drivers (e.g. climate, soil properties and topography).Gathering forest inventories from 606 plots across three tropical regions (i.e. South America, Asia andAfrica), we studied the influence of environmental drivers on several forest structural components andAGC, using linear regressions and controlling for spatial autocorrelation in model residuals. In addition,we tested the influence of the climate data sources by testing the sensitivity of the results to differentclimate datasets (e.g.WorldClim, ERA5, CHIRPS and TRMM). Preliminary results unveil significant andstrong relationships between environmental drivers and each forest structural component (with anaverage RMSE of 18%), whereas no or weak environmental influence was identified on AGC (with anaverage RMSE of 34%). It confirms the hypothesis that the link between environmental drivers andforest AGC is indirect through specific and antagonistic relationships between environment and eachforest structural component. Interestingly, we identified a strong influence (with an average RMSE of8,2%) of soil properties (i.e. clay content and pH) and topography (i.e. elevation and slope) on the wooddensity weighted by basal area. These results highlight the necessity to study the drivers of foreststructural components across tropical regions to understand the spatial distribution of tropical forestAGC. This research provides key insights for future studies on forest AGC drivers as well asconservation-restauration strategies |
| نوع الوثيقة: | conference poster not in proceedings http://purl.org/coar/resource_type/c_18co conferencePoster |
| اللغة: | English |
| URL الوصول: | https://orbi.uliege.be/handle/2268/321218 |
| Rights: | open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsorb.321218 |
| قاعدة البيانات: | ORBi |
| الوصف غير متاح. |