Leaf area index estimated by direct, semi-direct, and indirect methods in European beech and sycamore maple stands

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F20%3A43914454" target="_blank" >RIV/62156489:43410/20:43914454 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00020702:_____/20:N0000059

Výsledek na webu

<a href="https://doi.org/10.1007/s11676-018-0809-0" target="_blank" >https://doi.org/10.1007/s11676-018-0809-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11676-018-0809-0" target="_blank" >10.1007/s11676-018-0809-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Leaf area index estimated by direct, semi-direct, and indirect methods in European beech and sycamore maple stands

Popis výsledku v původním jazyce

Leaf area index (LAI) is one of the most important characteristics of forest stands that affects the fundamentals of tree physiological processes, biomass production, and mechanical stability. The LAI results obtained by the semi-direct and indirect methods (the needle technique and an LAI-2000 PCA) in three European beech (Fagus sylvatica L.) stands and one sycamore maple (Acer pseudoplatanus L.) stand were compared with LAI estimated by litter traps during the 2013 growing season. Seasonal LAI was estimated using an LAI-2000 PCA which showed similar trends among the stands and strongly corresponded to phenological phases of deciduous stands in Europe, with the fastest rate of leaf area increment occurring during the first month following bud break. During the growing season, maximum stand LAI value was on June 19th and reached 4.5-5.1, and 4.0 in the beech and maple stands, respectively. The needle technique significantly underestimated (p &lt; 0.05) direct LAI on average by 22.0% and 40.0% in the beech and maple stands, respectively. The LAI-2000 PCA insignificantly underestimated (p &gt; .05) LAI on average by 15.1% and 5.8% in the beech and maple stands, respectively. All methods for LAI estimation at the stand level could be applicable in deciduous forest stands (beech, maple) with similar site and stand characteristics. However, calibration by direct method is necessary to obtain the required precision.

Název v anglickém jazyce

Leaf area index estimated by direct, semi-direct, and indirect methods in European beech and sycamore maple stands

Popis výsledku anglicky

Leaf area index (LAI) is one of the most important characteristics of forest stands that affects the fundamentals of tree physiological processes, biomass production, and mechanical stability. The LAI results obtained by the semi-direct and indirect methods (the needle technique and an LAI-2000 PCA) in three European beech (Fagus sylvatica L.) stands and one sycamore maple (Acer pseudoplatanus L.) stand were compared with LAI estimated by litter traps during the 2013 growing season. Seasonal LAI was estimated using an LAI-2000 PCA which showed similar trends among the stands and strongly corresponded to phenological phases of deciduous stands in Europe, with the fastest rate of leaf area increment occurring during the first month following bud break. During the growing season, maximum stand LAI value was on June 19th and reached 4.5-5.1, and 4.0 in the beech and maple stands, respectively. The needle technique significantly underestimated (p &lt; 0.05) direct LAI on average by 22.0% and 40.0% in the beech and maple stands, respectively. The LAI-2000 PCA insignificantly underestimated (p &gt; .05) LAI on average by 15.1% and 5.8% in the beech and maple stands, respectively. All methods for LAI estimation at the stand level could be applicable in deciduous forest stands (beech, maple) with similar site and stand characteristics. However, calibration by direct method is necessary to obtain the required precision.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40102 - Forestry

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of Forestry Research

ISSN

1007-662X

e-ISSN

—

Svazek periodika

31

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

10

Strana od-do

827-836

Kód UT WoS článku

000529367600013

EID výsledku v databázi Scopus

2-s2.0-85054320411