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Detailed reconstruction of trees from terrestrial laser scans for remote sensing and radiative transfer modelling applications
2021
in silico Plants
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Our algorithm for 3D model construction of a single tree is based on terrestrial laser scanning (TLS) and ancillary field measurements of leaf angle distribution, percentage of current-year and older leaves ...
We selected three forest species of different architecture: Norway spruce (Picea abies) and European beech (Fagus sylvatica), representatives of European production forests, and white peppermint (Eucalyptus ...
from the RMIT University in Melbourne for acquisition of the white peppermint TLS point clouds, and IFER -Institute of Forest Ecosystem Research, Ltd. and IFER -Monitoring and Mapping Solutions, Ltd. ...
doi:10.1093/insilicoplants/diab026
fatcat:lugtjqbo7vctfkxe2kpx5nezya
New Opportunities for Forest Remote Sensing Through Ultra-High-Density Drone Lidar
2019
Surveys in geophysics
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We then describe a case study using a heavy-lift autonomous helicopter in a temperate mountain forest in the southern Czech Republic in support of calibration and validation activities for the NASA Global ...
Low-altitude flight using drones enables the collection of ultra-high-density point clouds using wider laser scan angles than have been possible from traditional airborne platforms. ...
laser scans using a low-altitude drone under leaf-off and leaf-on conditions 51 days apart The measurements were collected using the Brown Platform for Autonomous Remote Sensing and contrast a closed-canopy ...
doi:10.1007/s10712-019-09529-9
pmid:31395993
pmcid:PMC6647463
fatcat:cs2r4y52ive73mlibznn3tibhe
Improving leaf area index (LAI) estimation by correcting for clumping and woody effects using terrestrial laser scanning
2018
Agricultural and Forest Meteorology
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Terrestrial laser scanning (TLS) provides a 3-dimensional view of the forest canopy, which we used in this study to improve LAI estimation by directly retrieving leaf angle distribution, and subsequently ...
In addition, the leaf angle distribution which strongly affects the estimation of LAI is either ignored while using the convergent angle 57.5°, or inversed simultaneously with LAI using multiple directions ...
We thank the Bavarian Forest National Park for supporting the data collection. We acknowledge the support of the "Data Pool Forestry" data-sharing initiative of the Bavarian Forest National Park. ...
doi:10.1016/j.agrformet.2018.08.026
fatcat:ijqydhugkbgm5agrqfstzxocaq
Close-range laser scanning in forests: towards physically based semantics across scales
2018
Interface Focus
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One contribution of 12 to a theme issue 'The terrestrial laser scanning revolution in forest ecology'. ...
More complex variables, e.g. leaf area index, need a thorough understanding and consideration of the physical particularities of the measurement process and semantic labelling of the point cloud. ...
Laser scanning point cloud as obtained by multi-view terrestrial laser scanning in a mature temperate beech forest in leaf-off conditions. ...
doi:10.1098/rsfs.2017.0046
pmid:29503725
fatcat:durvze7zcze33jotfspy4xx4ka
Applications of TLS and ALS in Evaluating Forest Ecosystem Services: A Southern Carpathians Case Study
2021
Forests
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This research aims to identify and implement existing methods that can be used for evaluating ecosystem services by employing airborne and terrestrial stationary laser scanning on plots from the Southern ...
Moreover, this paper discusses the adaptation of field-based approaches for evaluating ecological indicators to automated processing techniques based on airborne and terrestrial stationary laser scanning ...
Funding: This study was conducted under the project CRESFORLIFE (SMIS 105506), subsidiary contract no. 18/2020, co-financed by the European Regional Development Fund through the 2014-2020 Competitiveness ...
doi:10.3390/f12091269
fatcat:lsdzd63il5datedubdjaqenxvu
Comparing RIEGL RiCOPTER UAV LiDAR Derived Canopy Height and DBH with Terrestrial LiDAR
2017
Sensors
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In recent years, LIght Detection And Ranging (LiDAR) and especially Terrestrial Laser Scanning (TLS) systems have shown the potential to revolutionise forest structural characterisation by providing unprecedented ...
Unmanned Aerial Vehicle (UAV)-borne laser scanning can be the way in between. ...
Terrestrial Laser Scanning (TLS) has the potential to accurately measure AGB on a plot scale [3, 4] , while Airborne Laser Scanning (ALS) from manned aircraft can serve as means to up-scale plot measurements ...
doi:10.3390/s17102371
pmid:29039755
pmcid:PMC5677400
fatcat:utco4qynabc6xkaoriv52bvwqi
A voxel matching method for effective leaf area index estimation in temperate deciduous forests from leaf-on and leaf-off airborne LiDAR data
2020
Remote Sensing of Environment
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We applied a voxel matching algorithm to estimate eLAI of deciduous forests using simulated and field LiDAR data under leaf-on and leaf-off conditions. ...
In addition, we evaluated the performance of 96 LiDAR metrics under leaf-on conditions for eLAI prediction using a statistical model. ...
We thank the "Data Pool Forestry" data-sharing initiative of the Bavarian Forest National Park. ...
doi:10.1016/j.rse.2020.111696
fatcat:y6w2sozsu5cc3bn4y7ahxsuhea
Four Dimensional Mapping of Vegetation Moisture Content Using Dual-Wavelength Terrestrial Laser Scanning
2019
Remote Sensing
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Recently, terrestrial laser scanning (TLS) has shown potential in measuring vegetation biochemical traits in three dimensions (3D) by using reflectance derived from backscattered intensity data. ...
Leaf equivalent water thickness (EWT), a metric widely used in vegetation health monitoring, has been successfully linked to the normalized difference index (NDI) of near and shortwave infrared wavelengths ...
Acknowledgments: The authors would like to thank Hexagon Geosystems for loan of the Leica P50 scanner used in the experiments.
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/rs11192311
fatcat:nb7tsllcxbda7mv4zbmj4n7aha
The Horizontal Distribution of Branch Biomass in European Beech: A Model Based on Measurements and TLS Based Proxies
2021
Remote Sensing
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We then applied Terrestrial Laser Scanning (TLS) to a subset of 17 trees to test a simple point cloud metric predicting the branch HBD. ...
In this study, we derive a first empirical model of the branch HBD for individual trees of European beech (Fagus sylvatica L.). ...
Acknowledgments: We gratefully acknowledge the help received in fieldwork from a team of students from our international master programme TIF in Göttingen: many thanks to Najeeb Al-Amin Iddris, Huy Luan ...
doi:10.3390/rs13051041
fatcat:vcmuwbarpfb7ngbczkoh5c3uoa
Predicting Tree Species From 3D Laser Scanning Point Clouds Using Deep Learning
2021
Frontiers in Plant Science
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It is, however, an important task for laser scanning-based forest inventory, ecosystem models, and to support forest management. ...
a computationally efficient way. ...
combinations of several selected structural measures like tree height, leaf area index, branch angle (Lin and Herold, 2016) . ...
doi:10.3389/fpls.2021.635440
pmid:33643364
pmcid:PMC7902704
fatcat:55lktm5hjbcqjlx2vwmyhh646y
Quantifying the target state of forest stands managed with the continuous cover approach – revisiting Möller's "Dauerwald" concept after 100 years
2020
Trees, Forests and People
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Here we used data from terrestrial laser scanning (TLS) to quantify differences in stand structure between forests managed for decades according to the continuous cover concept and forests managed otherwise ...
We found that the vertical distribution of plant material in the continuous cover stands was relatively homogeneous and similar to the vertical distribution found in primary European beech forests. ...
First, we thank Hans von der Goltz representative for all members of the "ANW -Arbeitsgemeinschaft naturnaher Waldbau " that helped us getting in contact with forest owners and their forest administrations ...
doi:10.1016/j.tfp.2020.100004
fatcat:kajlfirpuvdqvdndkblawbr4ae
Terrestrial Laser Scanning for Quantifying Timber Assortments from Standing Trees in a Mixed and Multi-Layered Mediterranean Forest
2021
Remote Sensing
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Terrestrial laser scanning (TLS) became a promising tool for timber assortment assessment compared to the traditional surveys, allowing reconstructing the tree architecture directly and rapidly. ...
This study aims to introduce an approach for timber assortment assessment using TLS data in a mixed and multi-layered Mediterranean forest. ...
Acknowledgments: This research was supported by the LIFE program and the Italian Academy of Forest Sciences, in the framework of the project "FRESh LIFE-Demonstrating Remote Sensing integration in sustainable ...
doi:10.3390/rs13214265
fatcat:kqo67beuh5gs7nrj45fjahomcq
The Laegeren Site: An Augmented Forest Laboratory
[chapter]
2020
Remote Sensing of Plant Biodiversity
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Terrestrial Laser Scanning On a subset of about 60 m × 60 m, a ground-based TLS survey was carried out using a Riegl VZ1000 instrument. ...
The gray structure southwest of the bounding box is the flux tower, and the small inset shows the total extent of the single-tree ground inventory
Fig. 4. 4 4 Terrestrial laser scan of a beech-dominated ...
doi:10.1007/978-3-030-33157-3_4
fatcat:ldupmw74afeshgo3gj6zo2v67y
Terrestrial laser scanning in forest ecology: Expanding the horizon
2020
Remote Sensing of Environment
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Terrestrial laser scanning (TLS) was introduced for basic forest measurements, such as tree height and diameter, in the early 2000s. ...
Here, we provide an interdisciplinary focus to explore current developments in TLS to measure and monitor forest structure. ...
Acknowledgements This paper is the result of the 4th scientific meeting on terrestrial laser scanning in forest ecology hosted by Ghent University in 2019. ...
doi:10.1016/j.rse.2020.112102
fatcat:wvk37s2zlzfihamze5hwxrdmdu
Small Scale Rainfall Partitioning in a European Beech Forest Ecosystem Reveals Heterogeneity of Leaf Area Index and Its Connectivity to Hydro-and Atmosphere
2019
Geosciences
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be determined by simultaneous records of precipitation; (2) Methods: Spatially explicit measurements of throughfall were conducted repeatedly below beech and in forest gaps for rain events in leafed and ...
We hypothesize that the spatial variability of LAI at the scale of crown sections of a single European beech (Fagus sylvatica L.) tree in a highly structured, mixed European beech-Norway spruce stand can ...
Acknowledgments: We thank Konrad Wälder for providing us with helpful regression functions. ...
doi:10.3390/geosciences9090393
fatcat:mg4giozlrjdktcvz5s4yqbdehe
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