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Funkce biomasy a expanzní faktory u mladých stromů smrku Picea abies [L.] Karst)

Popis výsledku

Roots, stems, branches and needles of 160 Norway spruce trees younger than 10 years were sampled in seven forest stands in central Slovakia in order to establish their biomass functions (BFs) and biomass expansion factors (BEFs).We tested threemodels foreach biomass pool based on the stembase diameter, tree height and the two parameters combined. BEF values decreased for all spruce components with increasing height and diameter, which was most evident in very young trees under 1 min height. In older trees, the values of BEFs did tend to stabilise at the height of 3?4 m. We subsequently used the BEFs to calculate dry biomass of the stands based on average stem base diameter and tree height. Total stand biomass grew with increasing age of the stands from about 1.0 Mg ha1 at 1.5 years to 44.3 Mg ha1 at 9.5 years. The proportion of stem and branch biomass was found to increase with age, while that of needles was fairly constant and the proportion of root biomass did decrease as the stands

Klíčová slova

Allometric relationshipsBiomass allocationExpansion factorTotal stand biomassWood density

Identifikátory výsledku

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Biomass functions and expansion factors in young Norway spruce (Picea abies [L.] Karst) trees

  • Popis výsledku v původním jazyce

    Roots, stems, branches and needles of 160 Norway spruce trees younger than 10 years were sampled in seven forest stands in central Slovakia in order to establish their biomass functions (BFs) and biomass expansion factors (BEFs).We tested threemodels foreach biomass pool based on the stembase diameter, tree height and the two parameters combined. BEF values decreased for all spruce components with increasing height and diameter, which was most evident in very young trees under 1 min height. In older trees, the values of BEFs did tend to stabilise at the height of 3?4 m. We subsequently used the BEFs to calculate dry biomass of the stands based on average stem base diameter and tree height. Total stand biomass grew with increasing age of the stands from about 1.0 Mg ha1 at 1.5 years to 44.3 Mg ha1 at 9.5 years. The proportion of stem and branch biomass was found to increase with age, while that of needles was fairly constant and the proportion of root biomass did decrease as the stands

  • Název v anglickém jazyce

    Biomass functions and expansion factors in young Norway spruce (Picea abies [L.] Karst) trees

  • Popis výsledku anglicky

    Roots, stems, branches and needles of 160 Norway spruce trees younger than 10 years were sampled in seven forest stands in central Slovakia in order to establish their biomass functions (BFs) and biomass expansion factors (BEFs).We tested threemodels foreach biomass pool based on the stembase diameter, tree height and the two parameters combined. BEF values decreased for all spruce components with increasing height and diameter, which was most evident in very young trees under 1 min height. In older trees, the values of BEFs did tend to stabilise at the height of 3?4 m. We subsequently used the BEFs to calculate dry biomass of the stands based on average stem base diameter and tree height. Total stand biomass grew with increasing age of the stands from about 1.0 Mg ha1 at 1.5 years to 44.3 Mg ha1 at 9.5 years. The proportion of stem and branch biomass was found to increase with age, while that of needles was fairly constant and the proportion of root biomass did decrease as the stands

Klasifikace

  • Druh

    Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

  • CEP obor

    GK - Lesnictví

  • OECD FORD obor

Návaznosti výsledku

Ostatní

  • Rok uplatnění

    2008

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název periodika

    Forest Ecology and Management

  • ISSN

    0378-1127

  • e-ISSN

  • Svazek periodika

    256

  • Číslo periodika v rámci svazku

    256

  • Stát vydavatele periodika

    NL - Nizozemsko

  • Počet stran výsledku

    8

  • Strana od-do

  • Kód UT WoS článku

  • EID výsledku v databázi Scopus