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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F08%3A25387" target="_blank" >RIV/60460709:41320/08:25387 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

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

Original language description

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

Czech name

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

Czech description

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

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

GK - Forestry

OECD FORD branch

—

Project

<a href="/en/project/2B06012" target="_blank" >2B06012: Biodiversity management in the Krkonoše Mts. and Šumava Mts.</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2008

Confidentiality

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

Name of the periodical

Forest Ecology and Management

ISSN

0378-1127

e-ISSN

—

Volume of the periodical

256

Issue of the periodical within the volume

256

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

—

UT code for WoS article

—

EID of the result in the Scopus database

—