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Estimating stem diameter distributions from airborne laser scanning data and their effects on long term forest management planning

Saad, Rami and Wallerman, Jörgen and Lämås, Tomas (2014). Estimating stem diameter distributions from airborne laser scanning data and their effects on long term forest management planning. Scandinavian journal of forest research. 30:2, 186-196
[Journal article] (Unpublished)

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Official URL: http://dx.doi.org/10.1080/02827581.2014.978888

Abstract

Data obtained from airborne laser scanning (ALS) are frequently used for acquiring forest data. Using a relatively low number of laser pulses per unit area (≤5 pulses per m2), this technique is typically used to estimate stand mean values. In this study stand diameter distributions were also estimated, with the aim of improving the information available for effective forest management and planning. Plot level forest data, such as stem number and mean height, together with diameter distributions in the form of Weibull distributions, were estimated using ALS data. Stand-wise tree lists were then estimated. These estimations were compared to data obtained from a field survey of 124 stands in northern Sweden. In each stand an average of seven sample plots (radius 5–10 m) were systematically sampled. The ALS approach was then compared to a mean value approach where only mean values are estimated and tree lists are simulated using a forest decision support system (DSS). The ALS approach provided a better match to observed diameter distributions: ca. 35% lower error indices used as a measure of accuracy and these results are in line with the previous studies. Moreover – which is unique compared to earlier studies – suboptimal losses were assessed. Using the Heureka DSS the suboptimal losses in terms of net present value due to erroneous decisions were compared. Although no large difference was found, the ALS approach showed smaller suboptimal loss than the mean value approach.

Authors/Creators:Saad, Rami and Wallerman, Jörgen and Lämås, Tomas
Title:Estimating stem diameter distributions from airborne laser scanning data and their effects on long term forest management planning
Series/Journal:Scandinavian journal of forest research (0282-7581)
Year of publishing :2014
Volume:30
Number:2
Page range:186-196
Number of Pages:11
Publisher:Taylor & Francis
ISSN:0282-7581
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 > K01 Forestry - General aspects
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Agrovoc terms:forest management planning, forest monitoring, decision support systems
Keywords:forest management planning, suboptimal loss, weibull distribution, airborne laser scanning, heureka, decision support system
URN:NBN:urn:nbn:se:slu:epsilon-e-2527
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-2527
Additional ID:
Type of IDID
Web of Science (WoS)000350693100007
DOI10.1080/02827581.2014.978888
ID Code:12038
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:30 Mar 2015 10:21
Metadata Last Modified:24 Nov 2015 00:15

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