气候变化领域集成服务门户(CCPortal): Testing the generality of below-ground biomass allometry across plant functional types

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DOI	10.1016/j.foreco.2018.08.043
	Testing the generality of below-ground biomass allometry across plant functional types
	Paul K.I.; Larmour J.; Specht A.; Zerihun A.; Ritson P.; Roxburgh S.H.; Sochacki S.; Lewis T.; Barton C.V.M.; England J.R.; Battaglia M.; O'Grady A.; Pinkard E.; Applegate G.; Jonson J.; Brooksbank K.; Sudmeyer R.; Wildy D.; Montagu K.D.; Bradford M.; Butler D.; Hobbs T.
发表日期	2019
ISSN	0378-1127
起始页码	102
结束页码	114
卷号	432
英文摘要	Accurate quantification of below-ground biomass (BGB) of woody vegetation is critical to understanding ecosystem function and potential for climate change mitigation from sequestration of biomass carbon. We compiled 2054 measurements of planted and natural individual tree and shrub biomass from across different regions of Australia (arid shrublands to tropical rainforests) to develop allometric models for prediction of BGB. We found that the relationship between BGB and stem diameter was generic, with a simple power-law model having a BGB prediction efficiency of 72–93% for four broad plant functional types: (i) shrubs and Acacia trees, (ii) multi-stemmed mallee eucalypts, (iii) other trees of relatively high wood density, and; (iv) a species of relatively low wood density, Pinus radiata D. Don. There was little improvement in accuracy of model prediction by including variables (e.g. climatic characteristics, stand age or management) in addition to stem diameter alone. We further assessed the generality of the plant functional type models across 11 contrasting stands where data from whole-plot excavation of BGB were available. The efficiency of model prediction of stand-based BGB was 93%, with a mean absolute prediction error of only 6.5%, and with no improvements in validation results when species-specific models were applied. Given the high prediction performance of the generalised models, we suggest that additional costs associated with the development of new species-specific models for estimating BGB are only warranted when gains in accuracy of stand-based predictions are justifiable, such as for a high-biomass stand comprising only one or two dominant species. However, generic models based on plant functional type should not be applied where stands are dominated by species that are unusual in their morphology and unlikely to conform to the generalised plant functional group models. © 2018
英文关键词	Acacia; Carbon; Eucalyptus; Multi-stemmed; Plant functional types; Roots; Shrubs; Stem diameter
语种	英语
scopus关键词	Biology; Biomass; Carbon; Climate change; Efficiency; Forecasting; Hardwoods; Acacia; Eucalyptus; Multi-stemmed; Plant functional type; Roots; Shrubs; Stem diameter; Forestry; accuracy assessment; belowground biomass; carbon sequestration; climate change; ecosystem function; evergreen tree; functional role; mitigation; prediction; root system; shrub; stem; Biology; Biomass; Carbon; Efficiency; Forecasts; Hardwoods; Australia; Acacia; Eucalyptus; Pinus radiata
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156402
作者单位	CSIRO Agriculture and CSIRO Land and Water, GPO Box 1700ACT 2601, Australia; School of Earth and Environmental Sciences, University of Queensland, St. Lucia, QLD 4072, Australia; Centre for the Synthesis and Analysis of Biodiversity, The Foundation for Research on Biodiversity, Technopôle de l'Arbois, Rue Louis Philibert, Aix-en-Provence, France; Centre for Crop and Disease Management, Department of Environment and Agriculture, Curtin University, Perth, WA 6102, Australia; FarmWoods, PO Box 385, Augusta, WA 6290, Australia; School of Environmental Science, Murdoch University, 90 South St., Murdoch, WA 6150, Australia; Department of Agriculture and Fisheries, University of the Sunshine Coast, Sippy DownsQLD 4556, Australia; Western Sydney University, Hawkesbury Institute for the Environment, Locked Bag 1797, PenrithNSW 2751, Australia; CSIRO Agriculture and CSIRO Land and Water, Private Bag 10, Clayton South, VIC 3169, Australia; CSIRO Agriculture and CSIRO Land and Water, Private Bag 12, Hobart, T...
推荐引用方式 GB/T 7714	Paul K.I.,Larmour J.,Specht A.,et al. Testing the generality of below-ground biomass allometry across plant functional types[J],2019,432.
APA	Paul K.I..,Larmour J..,Specht A..,Zerihun A..,Ritson P..,...&Hobbs T..(2019).Testing the generality of below-ground biomass allometry across plant functional types.Forest Ecology and Management,432.
MLA	Paul K.I.,et al."Testing the generality of below-ground biomass allometry across plant functional types".Forest Ecology and Management 432(2019).