High carbon losses from established growing sites delay the carbon sequestration benefits of street tree plantings - A case study in Helsinki, Finland

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http://hdl.handle.net/10138/300777

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Riikonen , A , Pumpanen , J , Mäki , M J & Nikinmaa , E 2017 , ' High carbon losses from established growing sites delay the carbon sequestration benefits of street tree plantings - A case study in Helsinki, Finland ' , Urban Forestry & Urban Greening , vol. 26 , pp. 85-94 . https://doi.org/10.1016/j.ufug.2017.04.004

Title: High carbon losses from established growing sites delay the carbon sequestration benefits of street tree plantings - A case study in Helsinki, Finland
Author: Riikonen, Anu; Pumpanen, Jukka; Mäki, Mari Jasmiina; Nikinmaa, Eero
Contributor: University of Helsinki, Department of Forest Sciences
University of Helsinki, Department of Forest Sciences
University of Helsinki, Department of Forest Sciences
University of Helsinki, Department of Forest Sciences
Date: 2017-08
Language: eng
Number of pages: 10
Belongs to series: Urban Forestry & Urban Greening
ISSN: 1618-8667
URI: http://hdl.handle.net/10138/300777
Abstract: We assessed the net carbon (C) sequestration dynamics of street tree plantings based on 10 years of measurements at two case study sites each with different tree species in Helsinki, Finland. We assessed C loss from tree soils and tree C accumulation, tested the applicability of pre-existing growth and biomass equations against observations, and estimated the time point for the beginning of net C sequestration for the studied street tree plantings. The tree woody biomass C accumulation in the first 10 years after planting was 18-32 kg per tree. At the same time the C loss from the growth media was at least 170 kg per growth media volume (25 m(3)) per tree. If this soil C loss was accounted for, the net C sequestration would begin, at best, approximately 30 years after planting. Biomass equations developed for traditional forests predicted more stem biomass and less leaf and branch biomass than measured for the species examined, but total aboveground biomass was generally well predicted.
Subject: Carbon sequestration
Tree soil carbon
Tree biomass equations
Urban trees
BIOMASS EQUATIONS
ORGANIC-MATTER
PRACTICAL IMPLICATIONS
DECIDUOUS WOODLAND
NITROGEN DYNAMICS
LEAF-LITTER
LAND-USE
SOIL
FOREST
DECOMPOSITION
1172 Environmental sciences
4112 Forestry
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