Estimating selective logging impacts on aboveground biomass in tropical forests using digital aerial photography obtained before and after a logging event from an unmanned aerial vehicle.
In: Forest Ecology & Management, Jg. 433 (2019-02-15), S. 162-169
Online
academicJournal
Zugriff:
Highlights • Monitoring selective logging is difficult because only a few trees are felled. • We investigated the potential of a lightweight UAV to detect selective logging. • Repeatedly acquired digital aerial photographs capture selective logging accurately. • A lightweight UAV is a cost-effective approach to quantify selective logging. Abstract Selective logging is one of the factors contributing to deforestation and forest degradation in tropical forests. A low-cost methodology to monitor selective logging is clearly required. However, this poses a challenge because only a few trees are felled at a given time. Here, we investigate the potential of using repeatedly acquired digital aerial photographs (DAPs) from a lightweight unmanned aerial vehicle (UAV) to detect selective logging in tropical forests in Myanmar. Selective logging was conducted within two 9-ha plots. DAPs were acquired immediately before and after selective logging using a lightweight UAV in this case study. The aboveground biomass (AGB) change related to selective logging was regressed against metrics expressing forest changes calculated at a 0.25-ha resolution from a photogrammetric point cloud created using the DAPs before and after selective logging. The root-mean-square error and coefficient of determination were 0.77 and 9.32 Mg/ha, respectively. This study demonstrates that repeated DAPs taken from a lightweight UAV can be used to estimate changes in the AGB linked to selective logging. This method could be used to quantify the impacts of both legal selective logging and illegal logging in tropical forests. [ABSTRACT FROM AUTHOR]
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Estimating selective logging impacts on aboveground biomass in tropical forests using digital aerial photography obtained before and after a logging event from an unmanned aerial vehicle.
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Autor/in / Beteiligte Person: | Ota, Tetsuji ; Ahmed, Oumer S. ; Minn, Sie Thu ; Khai, Tual Cin ; Mizoue, Nobuya ; Yoshida, Shigejiro |
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Zeitschrift: | Forest Ecology & Management, Jg. 433 (2019-02-15), S. 162-169 |
Veröffentlichung: | 2019 |
Medientyp: | academicJournal |
ISSN: | 0378-1127 (print) |
DOI: | 10.1016/j.foreco.2018.10.058 |
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