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Titolo:
DEVELOPMENT OF AN IMPROVED MODEL ESTIMATING THE NUTRIENT CONTENT OF THE BOLE FOR 4 BOREAL TREE SPECIES
Autore:
ROCHON P; PARE D; MESSIER C;
Indirizzi:
CANADIAN FORESTRY SERV,NAT RESOURCES CANADA,LAURENTIAN FORESTRY CTR,POB 3800 ST FOY PQ G1V 4C7 CANADA UNIV QUEBEC,GRP RECH ECOL FORESTIERE MONTREAL PQ H3C 3P8 CANADA BIODOME MONTREAL MONTREAL PQ H1V 1B3 CANADA
Titolo Testata:
Canadian journal of forest research
fascicolo: 1, volume: 28, anno: 1998,
pagine: 37 - 43
SICI:
0045-5067(1998)28:1<37:DOAIME>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
WHOLE-TREE; FOREST; BIOMASS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
23
Recensione:
Indirizzi per estratti:
Citazione:
P. Rochon et al., "DEVELOPMENT OF AN IMPROVED MODEL ESTIMATING THE NUTRIENT CONTENT OF THE BOLE FOR 4 BOREAL TREE SPECIES", Canadian journal of forest research, 28(1), 1998, pp. 37-43

Abstract

An improved model for estimating nutrient contents of the commercial portion of tree boles was developed for four boreal tree species (Populus tremuloides Michx., Betula papyrifera Marsh., Picea glauca (Moench) Voss, and Abies balsamea (L. ) Mill.). This model considers the spatial pattern of variation of nutrient concentrations inside the bole andits relationships with tree size. For all species-nutrient combinations, no significant pattern was found for vertical variations in nutrient concentrations, while two types of nonlinear models, using distancefrom the tree periphery as the independent variable, fit the pattern of horizontal (or radial) variations. These patterns of variability were used to estimate the global nutrient concentration of the bole by using mathematical integration. The values obtained with this method were generally lower, especially for large stems, than values obtained with traditional methods that do not consider the variability of nutrient concentrations inside the bole. This improved model would permit better estimates of the amounts of nutrients lost in biomass upon forestharvesting, as well as internal cycling of nutrients within the bole.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 16:25:23