HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Estimating leaf bulk density distribution in a tree canopy using terrestrial LiDAR and a straightforward calibration procedure

Abstract : Leaf biomass distribution is a key factor for modeling energy and carbon fluxes in forest canopies and for assessing fire behavior. We propose a new method to estimate 3D leaf bulk density distribution, based on a calibration of indices derived from T-LiDAR. We applied the method to four contrasted plots in a mature Quercus pubescens forest. Leaf bulk densities were measured inside 0.7 m-diameter spheres, referred to as Calibration Volumes. Indices were derived from LiDAR point clouds and calibrated over the Calibration Volume bulk densities. Several indices were proposed and tested to account for noise resulting from mixed pixels and other theoretical considerations. The best index and its calibration parameter were then used to estimate leaf bulk densities at the grid nodes of each plot. These LiDAR-derived bulk density distributions were used to estimate bulk density vertical profiles and loads and above four meters compared well with those assessed by the classical inventory-based approach. Below four meters, the LiDAR-based approach overestimated bulk densities since no distinction was made between wood and leaf returns. The results of our method are promising since they demonstrate the possibility to assess bulk density on small plots at a reasonable operational cost.
Document type :
Journal articles
Complete list of metadata

Cited literature [2 references]  Display  Hide  Download

Contributor : Migration Prodinra Connect in order to contact the contributor
Submitted on : Thursday, May 28, 2020 - 11:41:28 AM
Last modification on : Thursday, March 31, 2022 - 5:04:02 PM


Publisher files allowed on an open archive


Distributed under a Creative Commons Attribution 4.0 International License




François Pimont, Jean-Luc Dupuy, Eric Rigolot, Vincent Prat, Alexandre Piboule. Estimating leaf bulk density distribution in a tree canopy using terrestrial LiDAR and a straightforward calibration procedure. Remote Sensing, MDPI, 2015, 7, pp.7995-8018. ⟨10.3390/rs70607995⟩. ⟨hal-02639286⟩



Record views


Files downloads