DOI: 10.1016/j.foreco.2012.11.040
Scopus记录号: 2-s2.0-84872424881
论文题名: A three level system for estimating the biomass of Castanea sativa Mill. coppice stands in north-west Spain
作者: Menéndez-Miguélez M. ; Canga E. ; Barrio-Anta M. ; Majada J. ; Álvarez-Álvarez P.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 291 起始页码: 417
结束页码: 426
语种: 英语
英文关键词: Biomass
; Chestnut coppice
; Individual tree
; Stand
; Stool
Scopus关键词: Above ground biomass
; Additivity
; Biomass components
; Biomass equations
; Biomass estimation
; Biomass levels
; Castanea sativa
; Chestnut coppice
; Data sets
; Individual tree
; Seemingly unrelated regression
; Stand densities
; Stand levels
; Standing tree
; Stool
; Study areas
; Three level systems
; Biomass
; Fruits
; Nonlinear equations
; Supports
; Forestry
; aboveground biomass
; coppice
; data set
; estimation method
; nonlinearity
; performance assessment
; regression analysis
; sampling
; stand dynamics
; Spain
; Castanea sativa
英文摘要: Aboveground biomass was studied in Castanea sativa Mill. coppice stands in north-west Spain, and biomass equations were fitted at three levels (individual tree, stool and stand). Four systems of biomass estimation were developed. In two of the systems, the following individual tree variables were taken into account: standing tree variables and stump dimension variables. In the other two systems, biomass was estimated at stool and stand level, respectively.In order to represent the existing range of ages, stand densities and sites in the study area, samples of 120 trees (for the individual tree level), 45 stools (for the stool level) and 70 plots (for the stand level) were chosen for study. The trees were felled and destructively sampled to separate biomass into the following components: wood, bark, thick branches, medium branches, thin branches and leaves. Several equations for quantifying the biomass of the different biomass components were evaluated. Heterocedasticity was corrected for by weighted fitting. To guarantee the additivity of the different biomass components, the equations were fitted simultaneously by nonlinear seemingly unrelated regressions (NSURs).The different biomass levels considered accounted for between 60% and 90% of the total variability, depending on the level and component evaluated. Most of the equations developed in this study were evaluated with an independent dataset, which confirmed the good performance of the biomass equations for prediction purposes. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66764
Appears in Collections: 影响、适应和脆弱性
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作者单位: Forest and Wood Technology Research Centre (CETEMAS), Finca Experimental La Mata s/n, Grado, Asturias, Spain; Research Group in Atlantic Forests (GIS-Forest), Department of Organisms and Systems Biology, University of Oviedo, Escuela Politécnica de Mieres (E.P.M.), Campus Universitario de Mieres, C/Gonzalo Gutiérrez Quirós, 33600 Mieres, Spain
Recommended Citation:
Menéndez-Miguélez M.,Canga E.,Barrio-Anta M.,et al. A three level system for estimating the biomass of Castanea sativa Mill. coppice stands in north-west Spain[J]. Forest Ecology and Management,2013-01-01,291