KalacskaSanchez-AzofeifaRivardEtAl2004

Référence

Kalacska, M., Sanchez-Azofeifa, G.A., Rivard, B., Calvo-Alvarado, J.C., Journet, A.R.P., Arroyo-Mora, J.P., Ortiz-Ortiz, D. (2004) Leaf area index measurements in a tropical moist forest: A case study from Costa Rica. Remote Sensing of Environment, 91(2):134-152. (Scopus )

Résumé

The role of tropical forests in sustainable development mechanisms and payments for environmental services is becoming increasingly important. Therefore, there is a greater need for accurate and detailed information about their biophysical characteristics (e.g., Leaf area index-LAI) along different stages of ecological succession. Remote sensing offers the possibility of providing relatively accurate estimations of such biophysical characteristics at a reasonable cost for most regional projects. The objectives of this study are to (1) document the variability of LAI in different stages of secondary growth in a tropical moist forest, (2) estimate LAI from spectral vegetation indices (SVIs), and (3) link LAI to the estimation of other canopy physiognomic characteristics. We found that segregation of LAI measurements by successional stage (early, intermediate, late) contributed to a better definition of the relationship between LAI and the SVIs. In addition, we conclude that the propagation of errors of precision through the SVI formulas must be taken into consideration along with intra-site and radiometric variability when uncertainty terms are calculated. From a linear regression analysis, we found that there is only a minimal difference between the nonparametric Theil-Sen and classical least-squares regressions. We also found that not only does the Lorentzian cumulative transition function describe the relationship between LAI and the SVIs, it also provides an estimate of the range of LAI values to which each index is sensitive. © 2004 Elsevier Inc. All rights reserved.

Format EndNote

Vous pouvez importer cette référence dans EndNote.

Format BibTeX-CSV

Vous pouvez importer cette référence en format BibTeX-CSV.

Format BibTeX

Vous pouvez copier l'entrée BibTeX de cette référence ci-bas, ou l'importer directement dans un logiciel tel que JabRef .

@ARTICLE { KalacskaSanchez-AzofeifaRivardEtAl2004,
    AUTHOR = { Kalacska, M. and Sanchez-Azofeifa, G.A. and Rivard, B. and Calvo-Alvarado, J.C. and Journet, A.R.P. and Arroyo-Mora, J.P. and Ortiz-Ortiz, D. },
    TITLE = { Leaf area index measurements in a tropical moist forest: A case study from Costa Rica },
    JOURNAL = { Remote Sensing of Environment },
    YEAR = { 2004 },
    VOLUME = { 91 },
    PAGES = { 134--152 },
    NUMBER = { 2 },
    ABSTRACT = { The role of tropical forests in sustainable development mechanisms and payments for environmental services is becoming increasingly important. Therefore, there is a greater need for accurate and detailed information about their biophysical characteristics (e.g., Leaf area index-LAI) along different stages of ecological succession. Remote sensing offers the possibility of providing relatively accurate estimations of such biophysical characteristics at a reasonable cost for most regional projects. The objectives of this study are to (1) document the variability of LAI in different stages of secondary growth in a tropical moist forest, (2) estimate LAI from spectral vegetation indices (SVIs), and (3) link LAI to the estimation of other canopy physiognomic characteristics. We found that segregation of LAI measurements by successional stage (early, intermediate, late) contributed to a better definition of the relationship between LAI and the SVIs. In addition, we conclude that the propagation of errors of precision through the SVI formulas must be taken into consideration along with intra-site and radiometric variability when uncertainty terms are calculated. From a linear regression analysis, we found that there is only a minimal difference between the nonparametric Theil-Sen and classical least-squares regressions. We also found that not only does the Lorentzian cumulative transition function describe the relationship between LAI and the SVIs, it also provides an estimate of the range of LAI values to which each index is sensitive. © 2004 Elsevier Inc. All rights reserved. },
    COMMENT = { Cited By (since 1996): 18 Export Date: 10 February 2010 Source: Scopus CODEN: RSEEA doi: 10.1016/j.rse.2004.02.011 },
    ISSN = { 00344257 (ISSN) },
    KEYWORDS = { Floristic composition, Holdridge complexity index, Leaf area index, Linear regression, Lorentzian cumulative function, Nonlinear regression, Spectral vegetation indices, Tropical moist forest, Ecology, Estimation, Forestry, Sustainable development, Vegetation, Biophysical characteristics, Linear regression analysis, Tropical forests, Remote sensing, floristics, leaf area index, nonlinearity, remote sensing, spectral analysis, tropical forest, vegetation index, Central America, Costa Rica, Lorentzia },
    OWNER = { Luc },
    TIMESTAMP = { 2010.02.10 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-2542583856&partnerID=40&md5=1459f9f30669deb65b9ec6b2d529f65c },
}

********************************************************** *************************** FRQNT ************************ **********************************************************

Le CEF est un
regroupement stratégique du

********************************************************** *********************** Infolettre *********************** **********************************************************

Abonnez-vous à
l'Infolettre du CEF!

********************************************************** ***************** Pub - Colloque du CEF ****************** **********************************************************

********************************************************** ************* Écoles d'été et formation **************************** **********************************************************

Formations et Écoles d'été

********************************************************** ***************** Pub - Congrès Mycelium ****************** **********************************************************

Septembre 2021

********************************************************** ***************** Pub - IWTT ****************** **********************************************************

Reporté en 2021

**********************************************************

***************** Pub - Symphonies_Boreales ****************** **********************************************************

********************************************************** ***************** Boîte à trucs *************** **********************************************************

CEF-Référence
La référence vedette !

  • Voici une liste (clairement incomplète) des packages R axés sur l'écologie! N'hésitez pas à ajouter à la liste

Voir les autres...