New tree height allometries derived from terrestrial laser scanning reveal substantial discrepancies with forest inventory methods in tropical rainforests

New tree height allometries derived from terrestrial laser scanning reveal substantial discrepancies with forest inventory methods in tropical rainforests

© 2024 The Author(s). Global Change Biology published by John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 30(2024), 8 vom: 19. Aug., Seite e17473
1. Verfasser: Terryn, Louise (VerfasserIn)
Weitere Verfasser: Calders, Kim, Meunier, Félicien, Bauters, Marijn, Boeckx, Pascal, Brede, Benjamin, Burt, Andrew, Chave, Jerome, da Costa, Antonio Carlos Lola, D'hont, Barbara, Disney, Mathias, Jucker, Tommaso, Lau, Alvaro, Laurance, Susan G W, Maeda, Eduardo Eiji, Meir, Patrick, Krishna Moorthy, Sruthi M, Nunes, Matheus Henrique, Shenkin, Alexander, Sibret, Thomas, Verhelst, Tom E, Wilkes, Phil, Verbeeck, Hans
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article accuracy forest inventory terrestrial laser scanning tree allometry tree height tropical rainforest
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520 |a Tree allometric models, essential for monitoring and predicting terrestrial carbon stocks, are traditionally built on global databases with forest inventory measurements of stem diameter (D) and tree height (H). However, these databases often combine H measurements obtained through various measurement methods, each with distinct error patterns, affecting the resulting H:D allometries. In recent decades, terrestrial laser scanning (TLS) has emerged as a widely accepted method for accurate, non-destructive tree structural measurements. This study used TLS data to evaluate the prediction accuracy of forest inventory-based H:D allometries and to develop more accurate pantropical allometries. We considered 19 tropical rainforest plots across four continents. Eleven plots had forest inventory and RIEGL VZ-400(i) TLS-based D and H data, allowing accuracy assessment of local forest inventory-based H:D allometries. Additionally, TLS-based data from 1951 trees from all 19 plots were used to create new pantropical H:D allometries for tropical rainforests. Our findings reveal that in most plots, forest inventory-based H:D allometries underestimated H compared with TLS-based allometries. For 30-metre-tall trees, these underestimations varied from -1.6 m (-5.3%) to -7.5 m (-25.4%). In the Malaysian plot with trees reaching up to 77 m in height, the underestimation was as much as -31.7 m (-41.3%). We propose a TLS-based pantropical H:D allometry, incorporating maximum climatological water deficit for site effects, with a mean uncertainty of 19.1% and a mean bias of -4.8%. While the mean uncertainty is roughly 2.3% greater than that of the Chave2014 model, this model demonstrates more consistent uncertainties across tree size and delivers less biased estimates of H (with a reduction of 8.23%). In summary, recognizing the errors in H measurements from forest inventory methods is vital, as they can propagate into the allometries they inform. This study underscores the potential of TLS for accurate H and D measurements in tropical rainforests, essential for refining tree allometries 
650 4 |a Journal Article 
650 4 |a accuracy 
650 4 |a forest inventory 
650 4 |a terrestrial laser scanning 
650 4 |a tree allometry 
650 4 |a tree height 
650 4 |a tropical rainforest 
700 1 |a Calders, Kim  |e verfasserin  |4 aut 
700 1 |a Meunier, Félicien  |e verfasserin  |4 aut 
700 1 |a Bauters, Marijn  |e verfasserin  |4 aut 
700 1 |a Boeckx, Pascal  |e verfasserin  |4 aut 
700 1 |a Brede, Benjamin  |e verfasserin  |4 aut 
700 1 |a Burt, Andrew  |e verfasserin  |4 aut 
700 1 |a Chave, Jerome  |e verfasserin  |4 aut 
700 1 |a da Costa, Antonio Carlos Lola  |e verfasserin  |4 aut 
700 1 |a D'hont, Barbara  |e verfasserin  |4 aut 
700 1 |a Disney, Mathias  |e verfasserin  |4 aut 
700 1 |a Jucker, Tommaso  |e verfasserin  |4 aut 
700 1 |a Lau, Alvaro  |e verfasserin  |4 aut 
700 1 |a Laurance, Susan G W  |e verfasserin  |4 aut 
700 1 |a Maeda, Eduardo Eiji  |e verfasserin  |4 aut 
700 1 |a Meir, Patrick  |e verfasserin  |4 aut 
700 1 |a Krishna Moorthy, Sruthi M  |e verfasserin  |4 aut 
700 1 |a Nunes, Matheus Henrique  |e verfasserin  |4 aut 
700 1 |a Shenkin, Alexander  |e verfasserin  |4 aut 
700 1 |a Sibret, Thomas  |e verfasserin  |4 aut 
700 1 |a Verhelst, Tom E  |e verfasserin  |4 aut 
700 1 |a Wilkes, Phil  |e verfasserin  |4 aut 
700 1 |a Verbeeck, Hans  |e verfasserin  |4 aut 
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773 1 8 |g volume:30  |g year:2024  |g number:8  |g day:19  |g month:08  |g pages:e17473 
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