Conference presentation
Root carbon accumulation in spotted gum (Corymbia citriodora subsp. variegata, CCV) plantations through time
Forestry Australia National Conference, 2021 (Tasmania, Australia, 11-Oct-2021 - 14-Oct-2021)
2021
Abstract
Spotted gum (Corymbia citriodora subsp. variegata, CCV) is an important plantation species in Australia and overseas. The species also contributes to belowground carbon sequestration when planted on former agricultural land through biomass that accumulates in the roots. However, the information required to reliably estimate belowground carbon accumulation in the roots for this species has not previously been available. The present study aims to estimate root carbon sequestration of spotted gum plantations through time and explores the effect of stand age and soil type on carbon sequestration in the roots in Southeast Queensland. Based on an allometric model developed for this species, the average carbon capture in the roots was 10.7 and 13.5 Mg by age 17 and 19 (tree density of 206 tree/ha, respectively. Results of Tukey HSD multiple comparisons showed that carbon sequestration at the same site were significantly different among ages (p-value 0.05) and soil type also influenced tree root carbon storage at the same age and site (p-value 0.05). At 19 years, the average root carbon content was 11.9 Mg/ha and 16.7 Mg/ha in heavy structured clay and well-structured soil, respectively. These findings suggest that forest managers should consider longer rotations, and appropriate site selection (i.e. soil types) is important to ensure higher levels of carbon sequestration in both roots, and of course aboveground biomass as well.
Details
- Title
- Root carbon accumulation in spotted gum (Corymbia citriodora subsp. variegata, CCV) plantations through time
- Authors
- Trinh Huynh (Author) - University of the Sunshine Coast, Queensland, Forest Research Institute
- Conference details
- Forestry Australia National Conference, 2021 (Tasmania, Australia, 11-Oct-2021 - 14-Oct-2021)
- Organisation Unit
- Forest Research Institute; University of the Sunshine Coast, Queensland; Forest Industries Research Centre
- Language
- English
- Record Identifier
- 99613508802621
- Output Type
- Conference presentation
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