scholarly journals Terrestrial Laser Scanning for Forest Inventories—Tree Diameter Distribution and Scanner Location Impact on Occlusion

Forests ◽  
2017 ◽  
Vol 8 (6) ◽  
pp. 184 ◽  
Author(s):  
Meinrad Abegg ◽  
Daniel Kükenbrink ◽  
Jürgen Zell ◽  
Michael Schaepman ◽  
Felix Morsdorf
Keyword(s):  
Laser Scanning ◽  
Terrestrial Laser Scanning ◽  
Diameter Distribution ◽  
Tree Diameter ◽  
Forest Inventories ◽  
Tree Diameter Distribution

scholarly journals Terrestrial laser scanning in forest inventories

2016 ◽  
Vol 115 ◽  
pp. 63-77 ◽  
Author(s):  
Xinlian Liang ◽  
Ville Kankare ◽  
Juha Hyyppä ◽  
Yunsheng Wang ◽  
Antero Kukko ◽  
...  
Keyword(s):  
Laser Scanning ◽  
Terrestrial Laser Scanning ◽  
Forest Inventories

scholarly journals Reliable Estimates of Merchantable Timber Volume from Terrestrial Laser Scanning

2021 ◽  
Vol 13 (18) ◽  
pp. 3610
Author(s):  
Dimitrios Panagiotidis ◽  
Azadeh Abdollahnejad
Keyword(s):  
Laser Scanning ◽  
Accurate Determination ◽  
Laser Scanner ◽  
Terrestrial Laser Scanning ◽  
Tree Height ◽  
Tree Level ◽  
Consensus Method ◽  
Field Methods ◽  
Forest Inventories ◽  
Random Sampling Consensus

Simple and accurate determination of merchantable tree height is needed for accurate estimations of merchantable volume. Conventional field methods of forest inventory can lead to biased estimates of tree height and diameter, especially in complex forest structures. Terrestrial laser scanner (TLS) data can be used to determine merchantable height and diameter at different heights with high accuracy and detail. This study focuses on the use of the random sampling consensus method (RANSAC) for generating the length and diameter of logs to estimate merchantable volume at the tree level using Huber’s formula. For this study, we used two plots; plot A contained deciduous trees and plot B consisted of conifers. Our results demonstrated that the TLS-based outputs for stem modelling using the RANSAC method performed very well with low bias (0.02 for deciduous and 0.01 for conifers) and a high degree of accuracy (97.73% for deciduous and 96.14% for conifers). We also found a high correlation between the proposed method and log length (−0.814 for plot A and −0.698 for plot B), which is an important finding because this information can be used to determine the optimum log properties required for analyzing stem curvature changes at different heights. Furthermore, the results of this study provide insight into the applicability and ergonomics during data collection from forest inventories solely from terrestrial laser scanning, thus reducing the need for field reference data.

scholarly journals Poster on Detecting and Characterizing Dead Wood Using Terrestrial Laser Scanning

2020 ◽  
Author(s):  
Tuomas Yrttimaa ◽  
Ninni Saarinen ◽  
Ville Luoma ◽  
Topi Tanhuanpää ◽  
Ville Kankare ◽  
...  
Keyword(s):  
Forest Ecosystem ◽  
Structural Component ◽  
Laser Scanning ◽  
Dead Wood ◽  
Terrestrial Laser Scanning ◽  
Automatic Method ◽  
Forest Inventories ◽  
Standing Trees ◽  
Downed Dead Wood

Dead wood is a key forest structural component for maintaining biodiversity and storing carbon. Despite its important role in a forest ecosystem, quantifying dead wood alongside standing trees has often neglected when investigating the feasibility of terrestrial laser scanning (TLS) in forest inventories. The objective of this study was therefore to develop an automatic method for detecting and characterizing downed dead wood.

How neighborhood affects tree diameter increment – New insights from terrestrial laser scanning and some methodical considerations

2015 ◽  
Vol 336 ◽  
pp. 119-128 ◽  
Author(s):  
Dominik Seidel ◽  
Nils Hoffmann ◽  
Martin Ehbrecht ◽  
Julia Juchheim ◽  
Christian Ammer
Keyword(s):  
Laser Scanning ◽  
Terrestrial Laser Scanning ◽  
Tree Diameter ◽  
Diameter Increment

scholarly journals Novel low-cost mobile mapping systems for forest inventories as terrestrial laser scanning alternatives

2021 ◽  
Vol 104 ◽  
pp. 102512
Author(s):  
Martin Mokroš ◽  
Tomáš Mikita ◽  
Arunima Singh ◽  
Julián Tomaštík ◽  
Juliána Chudá ◽  
...  
Keyword(s):  
Laser Scanning ◽  
Low Cost ◽  
Terrestrial Laser Scanning ◽  
Mobile Mapping ◽  
Forest Inventories ◽  
Mobile Mapping Systems ◽  
Mapping Systems
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