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Pre-logging carbon accounts in old-growth forests, via allometry: An example of mixed-forest in Tasmania, Australia

Citation

Dean, C and Fitzgerald, NB and Wardell-Johnson, GW, Pre-logging carbon accounts in old-growth forests, via allometry: An example of mixed-forest in Tasmania, Australia, Plant Biosystems, 146, (1) pp. 223-236. ISSN 1126-3504 (2012) [Refereed Article]

Copyright Statement

Copyright 2012 Societa Botanica Italiana

DOI: doi:10.1080/11263504.2011.638332

Abstract

Uncertainty in past and future anthropogenic carbon emissions obscures climate change modelling. Available allometrics are insufficient for regional-level accounting of old-growth, pre-logging carbon stocks. The project goal was to determine the aboveground carbon (biomass and necromass) for a typical old-growth Eucalyptus delegatensis-dominated mixed-forest in Tasmania. Allometrics were developed for aboveground biomass of Eucalyptus delegatensis and generic rainforest understorey species. A total of 207 eucalypts with DBH 0.21-4.5 m, and 897 rainforest understorey trees with DBH 0.01-2.52 m were measured across 7.7 ha. DBH frequency distribution of E. delegatensis showed at least two age cohorts and distinct positive skew, whereas its DBH carbon distribution showed distinct negative skew. Half of the eucalypt biomass was from trees with DBH > 2.4(0.1) m, and 16% with DBH ≥ 3.5 m (from ∼1.1 trees ha−1) – indicating the importance of allometrics for high DBH. Aboveground carbon was 622(180) Mg ha−1, with ∼20% from understorey and ∼25% from necromass. The carbon in aboveground biomass was above the median value for temperate forests. The long-term aboveground-carbon emissions from clearfelling the same forest type from 1999 to 2009 is likely to be 2.9(±1.3) Tg, depending on the growth and seral stages of the forest logged.

Item Details

Item Type:Refereed Article
Keywords:allometric, carbon distribution, carbon emissions, logging, mixed-forest, old-growth
Research Division:Environmental Sciences
Research Group:Environmental Science and Management
Research Field:Environmental Monitoring
Objective Division:Environment
Objective Group:Climate and Climate Change
Objective Field:Climate Change Models
Author:Dean, C (Dr Christopher Dean)
Author:Fitzgerald, NB (Mr Nicholas Fitzgerald)
Author:Wardell-Johnson, GW (Associate Professor Grant Wardell-Johnson)
ID Code:116427
Year Published:2012
Web of Science® Times Cited:12
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2017-05-10
Last Modified:2017-08-14
Downloads:0

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