Assessing above-ground biomass of open-grown urban trees : A comparison between existing models and a volume-based approach

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http://hdl.handle.net/10138/307573

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Tanhuanpää , T , Kankare , V , Setälä , H , Yli-Pelkonen , V , Vastaranta , M , Niemi , M T , Raisio , J & Holopainen , M 2017 , ' Assessing above-ground biomass of open-grown urban trees : A comparison between existing models and a volume-based approach ' , Urban Forestry & Urban Greening , vol. 21 , pp. 239-246 . https://doi.org/10.1016/j.ufug.2016.12.011

Title: Assessing above-ground biomass of open-grown urban trees : A comparison between existing models and a volume-based approach
Author: Tanhuanpää, Topi; Kankare, Ville; Setälä, Heikki; Yli-Pelkonen, Vesa; Vastaranta, Mikko; Niemi, Mikko T.; Raisio, Juha; Holopainen, Markus
Contributor: University of Helsinki, Department of Forest Sciences
University of Helsinki, Department of Forest Sciences
University of Helsinki, Environmental Sciences
University of Helsinki, Environmental Sciences
University of Helsinki, Department of Forest Sciences
University of Helsinki, Department of Forest Sciences
University of Helsinki, Department of Forest Sciences
Date: 2017-01
Language: eng
Number of pages: 8
Belongs to series: Urban Forestry & Urban Greening
ISSN: 1618-8667
URI: http://hdl.handle.net/10138/307573
Abstract: Assessment of the amount of carbon sequestered and the value of ecosystem services provided by urban trees requires reliable data. Predicting the proportions and allometric relationships of individual urban trees with models developed for trees in rural forests may result in significant errors in biomass calculations. To better understand the differences in biomass accumulation and allocation between urban and rural trees, two existing biomass models for silver birch (Betula pendula Roth) were tested for their performance in assessing the above-ground biomass (AGB) of 12 urban trees. In addition, the performance of a volume-based method utilizing accurate terrestrial laser scanning (TLS) data and stem density was evaluated in assessing urban tree AGB. Both tested models underestimated the total AGB of single trees, which was mainly due to a substantial underestimation of branch biomass. The volume-based method produced the most accurate estimates of stem biomass. The results suggest that biomass models originally based on sample trees from rural forests should not be used for urban, open-grown trees, and that volume-based methods utilizing TLS data are a promising alternative for non-destructive assessment of urban tree AGB. (C) 2017 Elsevier GmbH. All rights reserved.
Subject: LiDAR
Remote sensing
Street trees
Trees outside forests
LASER SCANNER DATA
CARBON STORAGE
ECOSYSTEM SERVICES
NORWAY SPRUCE
GENERAL-MODEL
TERRESTRIAL
EQUATIONS
FOREST
RECONSTRUCTION
STEMS
4112 Forestry
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