Tropical peatland vegetation structure and biomass: optimal exploitation of airborne laser scanning

Accurate estimation of above ground biomass (AGB) is required to better understand the variability and dynamics of tropical peat swamp forest (PSF) ecosystem function and resilience to disturbance events. The objective of this work is to examine the relationship between tropical PSF AGB and small-fo...

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Main Authors: Brown, Chloe, Boyd, Doreen, Sjögersten, Sofie, Clewley, Daniel, Evers, Stephanie, Aplin, Paul
Format: Article
Published: MDPI 2018
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Online Access:https://eprints.nottingham.ac.uk/51514/
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author Brown, Chloe
Boyd, Doreen
Sjögersten, Sofie
Clewley, Daniel
Evers, Stephanie
Aplin, Paul
author_facet Brown, Chloe
Boyd, Doreen
Sjögersten, Sofie
Clewley, Daniel
Evers, Stephanie
Aplin, Paul
author_sort Brown, Chloe
building Nottingham Research Data Repository
collection Online Access
description Accurate estimation of above ground biomass (AGB) is required to better understand the variability and dynamics of tropical peat swamp forest (PSF) ecosystem function and resilience to disturbance events. The objective of this work is to examine the relationship between tropical PSF AGB and small-footprint airborne Light Detection and Ranging (LiDAR) discrete return (DR) and full waveform (FW) derived metrics, with a view to establishing the optimal use of this technology in this environment. The study was undertaken in North Selangor peat swamp forest (NSPSF) reserve, Peninsular Malaysia. Plot-based multiple regression analysis was performed to established the strongest predictive models of PSF AGB using DR metrics (only), FW metrics (only), and a combination of DR and FW metrics. Overall, the results demonstrate that a Combination-model, coupling the benefits derived from both DR and FW metrics, had the best performance in modelling AGB for tropical PSF (R2 = 0.77, RMSE = 36.4, rRMSE = 10.8%); however, no statistical difference was found between the rRMSE of this model and the best models using only DR and FW metrics. We conclude that the optimal approach to using airborne LiDAR for the estimation of PSF AGB is to use LiDAR metrics that relate to the description of the mid-canopy. This should inform the use of remote sensing in this ecosystem and how innovation in LiDAR-based technology could be usefully deployed.
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spelling nottingham-515142020-05-04T19:33:48Z https://eprints.nottingham.ac.uk/51514/ Tropical peatland vegetation structure and biomass: optimal exploitation of airborne laser scanning Brown, Chloe Boyd, Doreen Sjögersten, Sofie Clewley, Daniel Evers, Stephanie Aplin, Paul Accurate estimation of above ground biomass (AGB) is required to better understand the variability and dynamics of tropical peat swamp forest (PSF) ecosystem function and resilience to disturbance events. The objective of this work is to examine the relationship between tropical PSF AGB and small-footprint airborne Light Detection and Ranging (LiDAR) discrete return (DR) and full waveform (FW) derived metrics, with a view to establishing the optimal use of this technology in this environment. The study was undertaken in North Selangor peat swamp forest (NSPSF) reserve, Peninsular Malaysia. Plot-based multiple regression analysis was performed to established the strongest predictive models of PSF AGB using DR metrics (only), FW metrics (only), and a combination of DR and FW metrics. Overall, the results demonstrate that a Combination-model, coupling the benefits derived from both DR and FW metrics, had the best performance in modelling AGB for tropical PSF (R2 = 0.77, RMSE = 36.4, rRMSE = 10.8%); however, no statistical difference was found between the rRMSE of this model and the best models using only DR and FW metrics. We conclude that the optimal approach to using airborne LiDAR for the estimation of PSF AGB is to use LiDAR metrics that relate to the description of the mid-canopy. This should inform the use of remote sensing in this ecosystem and how innovation in LiDAR-based technology could be usefully deployed. MDPI 2018-04-25 Article PeerReviewed Brown, Chloe, Boyd, Doreen, Sjögersten, Sofie, Clewley, Daniel, Evers, Stephanie and Aplin, Paul (2018) Tropical peatland vegetation structure and biomass: optimal exploitation of airborne laser scanning. Remote Sensing, 10 (5). 671/1-671/21. ISSN 2072-4292 tropical peat swamp; LiDAR; discrete return LiDAR; full waveform LiDAR; above ground biomass http://www.mdpi.com/2072-4292/10/5/671 doi:10.3390/rs10050671 doi:10.3390/rs10050671
spellingShingle tropical peat swamp; LiDAR; discrete return LiDAR; full waveform LiDAR; above ground biomass
Brown, Chloe
Boyd, Doreen
Sjögersten, Sofie
Clewley, Daniel
Evers, Stephanie
Aplin, Paul
Tropical peatland vegetation structure and biomass: optimal exploitation of airborne laser scanning
title Tropical peatland vegetation structure and biomass: optimal exploitation of airborne laser scanning
title_full Tropical peatland vegetation structure and biomass: optimal exploitation of airborne laser scanning
title_fullStr Tropical peatland vegetation structure and biomass: optimal exploitation of airborne laser scanning
title_full_unstemmed Tropical peatland vegetation structure and biomass: optimal exploitation of airborne laser scanning
title_short Tropical peatland vegetation structure and biomass: optimal exploitation of airborne laser scanning
title_sort tropical peatland vegetation structure and biomass: optimal exploitation of airborne laser scanning
topic tropical peat swamp; LiDAR; discrete return LiDAR; full waveform LiDAR; above ground biomass
url https://eprints.nottingham.ac.uk/51514/
https://eprints.nottingham.ac.uk/51514/
https://eprints.nottingham.ac.uk/51514/