Above-ground carbon density derived from LiDAR data over oil palm plantations in Malaysian Borneo, 2014

The work was carried out in the oil palm plantations within the Stability of Altered Forest Ecosystem (SAFE) Project, located within lowland dipterocarp forest regions of East Sabah in Malaysian Borneo. Airborne LiDAR data were acquired on 5 November 2014 using a Leica LiDAR50-II flown at 1850 m altitude on a Dornier 228-201 travelling at 135 knots. The LiDAR sensor emitted pulses at 83.1 Hz with a field of view of 12.0°, and a footprint of about 40 cm diameter. The average pulse density was 7.3/m2. The Leica LiDAR50-II sensor records full waveform LiDAR, but for the purposes of this study the data were discretised, with up to four returns recorded per pulse. The LiDAR data were pre-processed by NERC's Data Analysis Node and delivered in standard LAS format. All further processing was undertaken using LAStools (Rapidlasso GmbH, LAStools). Points were classified as ground and non-ground, and a digital elevation model (DEM) was fitted to the ground returns, producing a raster of 1 m resolution. The DEM elevations were subtracted from elevations of all non-ground returns to produce a normalised point cloud, and a canopy height model (CHM) was constructed from this on a 0.5 m raster by averaging the first returns. Finally, holes in the raster were filled by averaging neighbouring cells.

Authors

• Nunes, Matheus — University fo Cambridge
• Ewers, Robert — Imperial College London
• Turner, Edgar — University of Cambridge
• Coomes, David — University of Cambridge
• Nilus, Reuben — Sabah Forestry Department

Keywords

• Carbon
• LiDAR
• Oil Palm
• SAFE Project
• Malaysian Borneo
• Canopy density

Funders

• NERC (JKM/MBS.1000-2/2 JLD.3 (128))

Permits

• Research — Sabah Biodiversity Centre (JKM/MBS.1000-2/2 JLD.3 (128))

Worksheets

Files

• LiDAR_Aboveground_Carbon.xlsx

Taxa

0 GBIF taxa, 0 sequence-derived taxa.