globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.foreco.2014.09.035
Scopus记录号: 2-s2.0-84908389465
论文题名:
Estimating temporal changes in carbon sequestration in plantings of mallee eucalypts: Modelling improvements
作者: Paul K.I.; Roxburgh S.H.; de Ligt R.; Ritson P.; Brooksbank K.; Peck A.; Wildy D.T.; Mendham D.; Bennett R.; Bartle J.; Larmour J.S.; Raison R.J.; England J.R.; Clifford D.
刊名: Forest Ecology and Management
ISSN:  0378-1127
出版年: 2015
卷: 335
起始页码: 166
结束页码: 175
语种: 英语
英文关键词: Carbon accounting ; E. kochii ; E. polybractea ; Eucalyptus loxophleba ; FullCAM model
Scopus关键词: Carbon accounting ; Carbon sequestration ; E. kochii ; E. polybractea ; Eucalyptus loxophleba ; Plantings ; Temporal change ; Eucalyptus loxophleba
英文摘要: Establishment of mallee eucalypt plantings on cleared agricultural land is currently the predominant method of reforestation for carbon sequestration in Australia. Investment in establishing and maintaining such plantings relies on having a cost-effective approach for providing un-biased estimates of yield in biomass and carbon sequestration. The Australian Government's forest carbon accounting model (FullCAM) had not previously been calibrated for mallee eucalypt plantings and, in many circumstances, substantially under-estimated of biomass for these plantings. Our objective was to improve model applicability and reliability of estimates of carbon sequestration. To achieve this, we first collected and analysed above-ground biomass data from 257 mallee eucalypt plantings (or 744 observations, when including the multiple measurements made at some planting sites) to determine the key factors influencing growth. Plantings were categorised according to species, planting configuration (block or belt plantings) and stand density. Each category of planting had significantly different rates of growth, with the rates of sequestration of above-ground biomass carbon being relatively high when established in densely-stocked, two-row belts. These categories of plantings then provided the basis for calibration (estimation of appropriate modifiers) of FullCAM growth curves. Overall model efficiency was 63%, and there was no apparent bias when the model was applied to the various planting categories. Thus, modelled estimates of biomass accumulation will be reliable on average but at any particular location will be highly uncertain, with either substantial under- or over-prediction possible. For some categories of mallee eucalypt plantings, and for plantings with access to ground-water or established in non-productive soils, there were insufficient observations to provide confidence in new calibrations specific for these circumstances. Moreover, application of the calibrations provided here are applicable for prediction of sequestration of biomass carbon of relatively young (<15-year-old) stands, with more data needed for prediction of longer-term rates of growth. © 2014.
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被引频次[WOS]:13   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65637
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作者单位: CSIRO, Agriculture Flagship and Land and Water Flagship, GPO Box 1700ACT, Australia; Department of the Environment, Land Division, GPO Box 787ACT, Australia; Forest Products Commission WA, 3 Baron-Hay Court, Kensington, WA, Australia; Department of Agriculture and Food, Western Australia (DAFWA), 444 Albany Hwy, Albany, WA, Australia; Department of Parks and Wildlife, Locked Bag 104, Bentley Delivery CentreWA, Australia; Fares Rural Pty Ltd, PO Box 526, Wembley, WA, Australia; CSIRO, Agriculture Flagship and Land and Water Flagship, Private Bag 12, Hobart, TAS, Australia; CSIRO, Agriculture Flagship and Land and Water Flagship, Private Bag 5, Wembley, WA, Australia; CSIRO, Agriculture Flagship and Land and Water Flagship, Private Bag 10, Clayton South, VIC, Australia; CSIRO, Digital Productivity and Services Flagship, 41 Boggo Road, Dutton Park, QLD, Australia

Recommended Citation:
Paul K.I.,Roxburgh S.H.,de Ligt R.,et al. Estimating temporal changes in carbon sequestration in plantings of mallee eucalypts: Modelling improvements[J]. Forest Ecology and Management,2015-01-01,335
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