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Tropical Peatland Vegetation Structure and Biomass: Optimal Exploitation of Airborne Laser Scanning

Brown, C, Boyd, DS, Sjogersten, S, Clewley, D, Evers, SL and Aplin, P (2018) Tropical Peatland Vegetation Structure and Biomass: Optimal Exploitation of Airborne Laser Scanning. Remote Sensing, 10 (5). ISSN 2072-4292

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Abstract

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.

Item Type: Article
Uncontrolled Keywords: Science & Technology; Technology; Remote Sensing; tropical peat swamp; LiDAR; discrete return LiDAR; full waveform LiDAR; above ground biomass; WAVE-FORM LIDAR; DISCRETE RETURN LIDAR; EASTERN DECIDUOUS FOREST; SMALL-FOOTPRINT DISCRETE; CANOPY HEIGHT MODELS; ABOVEGROUND BIOMASS; CARBON STOCKS; SWAMP FOREST; PENINSULAR MALAYSIA; SUBTROPICAL FORESTS
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions: Natural Sciences and Psychology
Publisher: MDPI
Related URLs:
Date Deposited: 01 Oct 2018 08:49
Last Modified: 03 Oct 2018 09:21
DOI or Identification number: 10.3390/rs10050671
URI: http://researchonline.ljmu.ac.uk/id/eprint/9377

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