Delineating and reconstructing 3D forest fuel components and volumes with terrestrial laser scanning

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dc.contributor.authorXi, Zhouxin
dc.contributor.authorChasmer, Laura
dc.contributor.authorHopkinson, Christopher
dc.date.accessioned2024-08-19T20:12:31Z
dc.date.available2024-08-19T20:12:31Z
dc.date.issued2023
dc.descriptionOpen access article. Creative Commons Attribution 4.0 International license (CC BY 4.0) applies
dc.description.abstractPredictive accuracy in wildland fire behavior is contingent on a thorough understanding of the 3D fuel distribution. However, this task is complicated by the complex nature of fuel forms and the associated constraints in sampling and quantification. In this study, twelve terrestrial laser scanning (TLS) plot scans were sampled within the mountain pine beetle-impacted forests of Jasper National Park, Canada. The TLS point clouds were delineated into eight classes, namely individual-tree stems, branches, foliage, downed woody logs, sapling stems, below-canopy branches, grass layer, and ground-surface points using a transformer-based deep learning classifier. The fine-scale 3D architecture of trees and branches was reconstructed using a quantitative structural model (QSM) based on the multi-class components from the previous step, with volume attributes extracted and analyzed at the branch, tree, and plot levels. The classification accuracy was evaluated by partially validating the results through field measurements of tree height, diameter-at-breast height (DBH), and live crown base height (LCBH). The extraction and reconstruction of 3D wood components enable advanced fuel characterization with high heterogeneity. The existence of ladder trees was found to increase the vertical overlap of volumes between tree branches and below-canopy branches from 8.4% to 10.8%.
dc.description.peer-reviewYes
dc.identifier.citationXi, Z., Chasmer, L., & Hopkins, C. (2023). Delineating and reconstructing 3D forest fuel components and volumes with terrestrial laser scanning. Remote Sensing, 15(19), Article 4478. https://doi.org/10.3390/rs15194778
dc.identifier.urihttps://hdl.handle.net/10133/6867
dc.language.isoen
dc.publisherMDPI
dc.publisher.departmentDepartment of Geography and Environment
dc.publisher.facultyArts and Science
dc.publisher.institutionUniversity of Lethbridge
dc.publisher.urlhttps://doi.org/10.3390/rs15194778
dc.subjectTerrestrial laser scanning
dc.subjectQuantitative structural model
dc.subjectDeep learning
dc.subjectForest
dc.subjectLidar
dc.subjectFuel
dc.subject3D reconstruction
dc.subjectLadder fuel
dc.subjectPoint cloud
dc.subjectWildfire behavior
dc.subjectForest fuel
dc.subject.lcshWildfires--Alberta--Jasper National Park
dc.subject.lcshJasper National Park (Alta.)
dc.subject.lcshFuelwood--Alberta
dc.titleDelineating and reconstructing 3D forest fuel components and volumes with terrestrial laser scanning
dc.typeArticle
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