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Comparison between TanDEM-X- and ALS-based estimation of aboveground biomass and tree height in boreal forests

Persson, Henrik and Fransson, Johan E.S. (2017). Comparison between TanDEM-X- and ALS-based estimation of aboveground biomass and tree height in boreal forests. Scandinavian journal of forest research. 32, 306-319
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Official URL: http://dx.doi.org/10.1080/02827581.2016.1220618

Abstract

Interferometric Synthetic Aperture Radar (InSAR) data from TerraSAR-X add-on for Digital Elevation Measurement (TanDEM-X) were used to estimate aboveground biomass (AGB) and tree height with linear regression models. These were compared to models based on airborne laser scanning (ALS) data at two Swedish boreal forest test sites, Krycklan (64 degrees N19 degrees E) and Remningstorp (58 degrees N13 degrees E). The predictions were validated using field data at the stand-level (0.5-26.1 ha) and at the plot-level (10 m radius). Additionally, the ALS metrics percentile 99 (p99) and vegetation ratio, commonly used to estimate AGB and tree height, were estimated in order to investigate the feasibility of replacing ALS data with TanDEM-X InSAR data. Both AGB and tree height could be estimated with about the same accuracy at the stand-level from both TanDEM-X- and ALS-based data. The AGB was estimated with 17.2% and 14.6% root mean square error (RMSE) and the tree height with 7.6% and 4.1% RMSE from TanDEM-X data at the stand-level at the two test sites Krycklan and Remningstorp. The Pearson correlation coefficients between the TanDEM-X height and the ALS height p99 were r=.98 and r=.95 at the two test sites. The TanDEM-X height contains information related to both tree height and forest density, which was validated from several estimation models.

Authors/Creators:Persson, Henrik and Fransson, Johan E.S.
Title:Comparison between TanDEM-X- and ALS-based estimation of aboveground biomass and tree height in boreal forests
Series/Journal:Scandinavian journal of forest research (0282-7581)
Year of publishing :2017
Volume:32
Page range:306-319
Number of Pages:14
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
Keywords:TanDEM-X, InSAR, forest, biomass, height, ALS, SAR
URN:NBN:urn:nbn:se:slu:epsilon-e-4245
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-4245
Additional ID:
Type of IDID
Web of Science (WoS)000399491200004
ID Code:14400
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:20 Jun 2017 09:38
Metadata Last Modified:14 Sep 2017 23:15

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