Calibration of the RothC model to turnover of soil carbon under eucalypts and pines
Abstract
The FullCAM model was developed for full carbon accounting in agriculture and forests at project and national scales. For forest systems, FullCAM links the empirical CAMFor model to models of tree growth (3PG), litter decomposition (GENDEC), and soil carbon turnover (RothC). Our objective was to calibrate RothC within the FullCAM framework using 2 long-term forestry experiments where productivity had been manipulated and archived and new soil samples were available for analysis of carbon within the various pools described by RothC. Inputs of carbon to soil at these trials were estimated by calibrating FullCAM to temporal data on above-ground growth, litterfall, and accumulation of litter. Two alternative submodels are available in FullCAM (CAMFor and GENDEC) for predicting decomposition of litter, and thus the input of carbon into the soil. Calibration of RothC was most sensitive to the partitioning of carbon during decomposition of debris between that lost as CO2 and that transferred to soil. Turnover of soil carbon was best simulated when the proportion of carbon lost to CO2 from relatively labile pools of debris was 77% (when simulated by CAMFor) and 95% (when simulated by GENDEC), whereas resistant pools of debris lost about 40% to CO2 during decomposition. Although rates of decomposition of pools of soil carbon were originally developed in RothC for agricultural soils, these constants were found to be also suitable for soils under plantation systems.
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Within FullCAM, RothC was used in woodland systems by applying debris partitioning and decomposition rates measured in agricultural soils.
“Within FullCAM [166, 167], RothC was used in woodland systems by applying debris partitioning and decomposition rates measured in agricultural soils.”
From Carbon Sequestration by Perennial Energy Crops: Is the Jury Still Out? (2015) · cites this paper as [167]
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Smith, P., Davies, C. A., Ogle, S., Zanchi, G., Bellarby, J., Bird, N., Boddey, R. M., McNamara, N. P., Powlson, D., Cowie, A., et al. (2012) · Global Change Biology · doi:10.1111/j.1365-2486.2012.02689.x · Cited by 185 · see citing works
Carbon Sequestration by Perennial Energy Crops: Is the Jury Still Out?
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- Authors
- Paul, K. I., & Polglase, P. J.
- Affiliations
- Commonwealth Scientific and Industrial Research Organisation (AU)
- Corresponding author
- Paul, K. I.
- ORCID
- Paul, K. I.
- Venue
- Soil Research
- Publisher
- CSIRO Publishing
- Published
- 2004-12-14
- Volume
- 42
- Issue
- 8
- Pages
- 883-895
- ISSN
- 0004-9573 (ISSN-L)
- 1838-675X
- 1838-6768
- OpenAlex
- W2145770162
- Cited by
- 41
- References
- 28
- Citations by year
- 2026: 2 · 2025: 1 · 2024: 6 · 2023: 1 · 2022: 1 · 2021: 2 · 2019: 1 · 2017: 2 · 2015: 3 · 2013: 4 · 2012: 3
- FWCI
- 4.10
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Soil Research (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
- Physical Sciences › Environmental Science › Nature and Landscape Conservation › Forest ecology and management
- Social Sciences › Education › Forest, Soil, and Plant Ecology in China
- Keywords
- RothC model, soil carbon turnover, model calibration, litter decomposition, eucalyptus plantations, pine plantations, carbon accounting, soil carbon pools, plantation soil
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