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Estimation of tree lists from airborne laser scanning by combining single-tree and area-based methods

Lindberg, Eva and Holmgren, Johan and Olofsson, Kenneth and Wallerman, Jörgen and Olsson, Håkan (2010). Estimation of tree lists from airborne laser scanning by combining single-tree and area-based methods. International journal of remote sensing. 31:5, 1175-1192
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Official URL: http://www.tandfonline.com/doi/pdf/10.1080/0143116...

Abstract

Individual tree crown segmentation from airborne laser scanning (ALS) data often fails to detect all trees depending on the forest structure. This paper presents a new method to produce tree lists consistent with unbiased estimates at area level. First, a tree list with height and diameter at breast height (DBH) was estimated from individual tree crown segmentation. Second, estimates at plot level were used to create a target distribution by using a k-nearest neighbour (k-NN) approach. The number of trees per field plot was rescaled with the estimated stem volume for the field plot. Finally, the initial tree list was calibrated using the estimated target distribution. The calibration improved the estimates of the distributions of tree height (error index (EI) from 109 to 96) and DBH (EI from 99 to 93) in the tree list. Thus, the new method could be used to estimate tree lists that are consistent with unbiased estimates from regression models at field plot level.

Authors/Creators:Lindberg, Eva and Holmgren, Johan and Olofsson, Kenneth and Wallerman, Jörgen and Olsson, Håkan
Title:Estimation of tree lists from airborne laser scanning by combining single-tree and area-based methods
Series/Journal:International journal of remote sensing (1366-5901)
Year of publishing :30 March 2010
Volume:31
Number:5
Page range:1175-1192
Publisher:Taylor & Francis
ISSN:1366-5901
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Accepted version
Full Text Status:Public
Agris subject categories.:K Forestry > K10 Forestry production
U Auxiliary disciplines > U40 Surveying methods
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Keywords:Airborne laser scanning, Individual tree list, Area-based method, Unbiased
URN:NBN:urn:nbn:se:slu:epsilon-e-756
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-756
Additional ID:
Type of IDID
DOI10.1080/01431160903380649
ID Code:9279
Department:(S) > Dept. of Forest Resource Management
(NL, NJ) > Dept. of Forest Resource Management
External funders:FORMAS and National Property Board
Deposited By: Skogsbiblioteket Umeå
Deposited On:07 Dec 2012 11:57
Metadata Last Modified:02 Dec 2014 10:53

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