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Updating of forest stand data by using recent digital photogrammetry in combination with older airborne laser scanning data

Lindgren, Nils and Wästlund, André and Bohlin, Inka and Nyström, Kenneth and Nilsson, Mats and Olsson, Håkan (2021). Updating of forest stand data by using recent digital photogrammetry in combination with older airborne laser scanning data. Scandinavian Journal of Forest Research. 36 , 401-407
[Research article]

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Abstract

Accurate and up-to-date data about growing stock volume are essential for forest management planning. Airborne Laser Scanning (ALS) is known for producing accurate wall-to-wall predictions but the data are at present collected at long time intervals. Digital Photogrammetry (DP) is cheaper and often more frequently available but known to be less accurate. This study investigates the potential of using contemporary DP data together with older ALS data and compares this with the case when only old ALS data are trained with recent field data. Combining ALS data from 2010 to 2011 with DP data from 2015, both trained with National Forest Inventory (NFI) field plot data from 2015, improved predictions of growing stock volume. Validation using data from 100 stands inventoried in 2015 gave an RMSE of 24.3% utilizing both old ALS data and recent DP data, 26.0% for old ALS only and 24.9% for recent DP only. If information about management actions were assumed available, combining old ALS and recent DP gave RMSE of 23.0%, only ALS 23.3% and only DP 23.8%.

Authors/Creators:Lindgren, Nils and Wästlund, André and Bohlin, Inka and Nyström, Kenneth and Nilsson, Mats and Olsson, Håkan
Title:Updating of forest stand data by using recent digital photogrammetry in combination with older airborne laser scanning data
Series Name/Journal:Scandinavian Journal of Forest Research
Year of publishing :2021
Volume:36
Page range:401-407
Number of Pages:7
Publisher:TAYLOR AND FRANCIS AS
ISSN:0282-7581
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial-No Derivative Works 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Keywords:Forest inventory, forest growing stock volume, airborne laser scanning, digital photogrammetry, thinning, updating forest data
URN:NBN:urn:nbn:se:slu:epsilon-p-112693
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-112693
Additional ID:
Type of IDID
DOI10.1080/02827581.2021.1936153
Web of Science (WoS)000662779900001
ID Code:25017
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Resource Management
(NL, NJ) > Dept. of Forest Resource Management
Deposited By: SLUpub Connector
Deposited On:25 Aug 2021 12:29
Metadata Last Modified:25 Aug 2021 12:31

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