Title
Examination of the Potential of Terrestrial Laser Scanning and Structure-from-Motion Photogrammetry for Rapid Nondestructive Field Measurement of Grass Biomass.
Abstract
Above ground biomass (AGB) is a parameter commonly used for assessment of grassland systems. Destructive AGB measurements, although accurate, are time consuming and are not easily undertaken on a repeat basis or over large areas. Structure-from-Motion (SfM) photogrammetry and Terrestrial Laser Scanning (TLS) are two technologies that have the potential to yield precise 3D structural measurements of vegetation quite rapidly. Recent advances have led to the successful application of TLS and SfM in woody biomass estimation, but application in natural grassland systems remains largely untested. The potential of these techniques for AGB estimation is examined considering 11 grass plots with a range of biomass in South Dakota, USA. Volume metrics extracted from the TLS and SfM 3D point clouds, and also conventional disc pasture meter settling heights, were compared to destructively harvested AGB total (grass and litter) and AGB grass plot measurements. Although the disc pasture meter was the most rapid method, it was less effective in AGB estimation (AGB(grass) r(2) = 0.42, AGB(total)r(2) = 0.32) than the TLS (AGB(grass) r(2) = 0.46, AGB(total) r(2) = 0.57) or SfM (AGB(grass) r(2) = 0.54, AGB(total) r(2) = 0.72) which both demonstrated their utility for rapid AGB estimation of grass systems.
Year
DOI
Venue
2017
10.3390/rs9060531
REMOTE SENSING
Keywords
Field
DocType
compact biomass LiDAR (CBL),terrestrial laser scanning (TLS),Structure-from-Motion (SfM) photogrammetry,grass,volume,aboveground biomass (AGB),disc pasture meter
Structure from motion,Photogrammetry,Biomass,Vegetation,Remote sensing,Grassland,Pasture,Metre (music),Terrestrial laser scanning,Geology
Journal
Volume
Issue
ISSN
9
6
2072-4292
Citations 
PageRank 
References 
4
0.59
6
Authors
4
Name
Order
Citations
PageRank
Sam D. Cooper140.59
David P. Roy230164.93
Crystal B. Schaaf310215.25
Ian Paynter472.44