TITLE

Carbon Dioxide Absorption of Common Trees in Chulalongkorn University

AUTHOR(S)
Chanon Suwanmontri; Charnwit Kositanont; Noppaporn Panich
PUB. DATE
March 2013
SOURCE
Modern Applied Science;Mar2013, Vol. 7 Issue 3, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This paper studies the relevance between carbon dioxide (CO2) absorption rates of common trees in Chulalongkorn University (Thailand), and environmental factors -- light intensity, air temperature, leaf temperature, and CO2 concentration in air -- by forming non-linear models. The common tree species are Pterocarpus indicus, Samanea saman, Peltophorum pterocarpum, and Terminalia catappa. Measuring CO2 absorption was done by chamber analysis approach. The experiment was carried out by gauging 10 leaves, 7 hours per day, and 2 days per species. According to the models, it is obvious that light intensity is the most influential factor to CO2 absorption for all studied species. Peltophorum pterocarpum and Samanea saman reach their maximum CO2 uptake rates of 24.5 and 20.9 CO2 μmol.m-2s-1, when photosynthetically active radiation is 1100 and 1500 μmol.m-2s-1 respectively. The other two do not reach their maximum rate within model data range. The regressions were best fitted with Gaussian function and Sigmoidal function. It is also suggested that Peltophorum pterocarpum and Samanea saman are good carbon sink and they should be planted more in the city for optimal CO2 absorption
ACCESSION #
86188780

 

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