Measurement methods and variability assessment of the Norway spruce total leaf area: implications for remote sensing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F13%3A10191468" target="_blank" >RIV/00216208:11310/13:10191468 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00468-012-0774-8" target="_blank" >http://dx.doi.org/10.1007/s00468-012-0774-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00468-012-0774-8" target="_blank" >10.1007/s00468-012-0774-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement methods and variability assessment of the Norway spruce total leaf area: implications for remote sensing

Popis výsledku v původním jazyce

Estimation of total leaf area (LA(T)) is important to express biochemical properties in plant ecology and remote sensing studies. A measurement of LA(T) is easy in broadleaf species, but it remains challenging in coniferous canopies. We proposed a new geometrical model to estimate Norway spruce LA(T) and compared its accuracy with other five published methods. Further, we assessed variability of the total to projected leaf area conversion factor (CF) within a crown and examined its implications for remotely sensed estimates of leaf chlorophyll content (C (ab)). We measured morphological and biochemical properties of three most recent needle age classes in three vertical canopy layers of a 30 and 100-year-old spruce stands. Newly introduced geometricalmodel and the parallelepiped model predicted spruce LA(T) with an error < 5 % of the average needle LA(T), whereas two models based on an elliptic approximation of a needle shape underestimated LA(T) by up to 60 %. The total to projected

Název v anglickém jazyce

Measurement methods and variability assessment of the Norway spruce total leaf area: implications for remote sensing

Popis výsledku anglicky

Estimation of total leaf area (LA(T)) is important to express biochemical properties in plant ecology and remote sensing studies. A measurement of LA(T) is easy in broadleaf species, but it remains challenging in coniferous canopies. We proposed a new geometrical model to estimate Norway spruce LA(T) and compared its accuracy with other five published methods. Further, we assessed variability of the total to projected leaf area conversion factor (CF) within a crown and examined its implications for remotely sensed estimates of leaf chlorophyll content (C (ab)). We measured morphological and biochemical properties of three most recent needle age classes in three vertical canopy layers of a 30 and 100-year-old spruce stands. Newly introduced geometricalmodel and the parallelepiped model predicted spruce LA(T) with an error < 5 % of the average needle LA(T), whereas two models based on an elliptic approximation of a needle shape underestimated LA(T) by up to 60 %. The total to projected

Druh

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

CEP obor

ED - Fyziologie

OECD FORD obor

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Projekt

<a href="/cs/project/GA205%2F09%2F1989" target="_blank" >GA205/09/1989: Vyhodnocení environmentálních vlivů povrchové těžby postavené na analýze dat hyperspektráního sensoru ARES</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Trees - Structure and Function

ISSN

0931-1890

e-ISSN

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Svazek periodika

27

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

111-121

Kód UT WoS článku

000313732500011

EID výsledku v databázi Scopus

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