Serapan Karbondioksida (CO2) Jenis-Jenis Pohon di Taman Buah "Mekar Sari" Bogor, Kaitannya dengan Potensi Mitigasi Gas Rumah Kaca
N. Hidayati, M. Reza, T. Juhaeti, M. Mansyur
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Abstract
ABSTRACT
Carbondioxide (CO2) Absorption by Trees in "Mekar Sari" Fruit Garden, Bogor, in Relation
to Green house Gases Mitigation. Biological diversity can make a significant contribution to
reducing the build-up of greenhouse gases in the atmosphere. A biological diverse tropical
forest with a diverse plant species typically stores 50 times more carbon per unit area compared
to monoculture plantation replacing it. Thus, the trees in forests have an essential role in the
functioning of the terrestrial biosphere, especially in the carbon cycle. Yet wild tree photosyntheses
are poorly studied than crop photosynthesis for several reasons: the large number of
species; difficulty in measuring photosynthesis of entire trees or of forest stands. This research
aims to assess the contribution of biological diversity in CO2 absorption by analyzing the
physiological characteristics (photosynthesis, transpiration, stomatal conductance, leaf chlorophyll
content) of tree species in "Mekar Sari" fruit garden, Bogor. The results will provide
information on carbon sequestration of some tree species suitable for revegetation. Variance in
CO2 assimilation rate is large among trees species. The results showed that there was a wide
range of variation of CO2 assimilation rate between tree species. The overall CO2 assimilation
rate ranged 2.33 - 13.42 ?molm-2s-1. The highest was Matoa (13.42 molm-2s-1 ) , followed by
Kacapi (12.50 ?molm-2s-1), Durian (11.00 ?molm-2s-1) and Nangka (11.00 ?molm-2s-1). Transpiration
rate was recorded between 4.29 - 9.50 molm-2s-1. The rate of CO2 assimilation was
affected by incident radiation and thus the quantum leaf (Q leaf) as well as leaf chlorophyll
content. Correlation between CO2 assimilation and Q leaf under certain environmental condition
was considerably high. Variance in stomatal conductance and transpiration rate varied
among tree species and were related to light intensity.
Key words: Photosynthesis, CO2 absorption, trees
Carbondioxide (CO2) Absorption by Trees in "Mekar Sari" Fruit Garden, Bogor, in Relation
to Green house Gases Mitigation. Biological diversity can make a significant contribution to
reducing the build-up of greenhouse gases in the atmosphere. A biological diverse tropical
forest with a diverse plant species typically stores 50 times more carbon per unit area compared
to monoculture plantation replacing it. Thus, the trees in forests have an essential role in the
functioning of the terrestrial biosphere, especially in the carbon cycle. Yet wild tree photosyntheses
are poorly studied than crop photosynthesis for several reasons: the large number of
species; difficulty in measuring photosynthesis of entire trees or of forest stands. This research
aims to assess the contribution of biological diversity in CO2 absorption by analyzing the
physiological characteristics (photosynthesis, transpiration, stomatal conductance, leaf chlorophyll
content) of tree species in "Mekar Sari" fruit garden, Bogor. The results will provide
information on carbon sequestration of some tree species suitable for revegetation. Variance in
CO2 assimilation rate is large among trees species. The results showed that there was a wide
range of variation of CO2 assimilation rate between tree species. The overall CO2 assimilation
rate ranged 2.33 - 13.42 ?molm-2s-1. The highest was Matoa (13.42 molm-2s-1 ) , followed by
Kacapi (12.50 ?molm-2s-1), Durian (11.00 ?molm-2s-1) and Nangka (11.00 ?molm-2s-1). Transpiration
rate was recorded between 4.29 - 9.50 molm-2s-1. The rate of CO2 assimilation was
affected by incident radiation and thus the quantum leaf (Q leaf) as well as leaf chlorophyll
content. Correlation between CO2 assimilation and Q leaf under certain environmental condition
was considerably high. Variance in stomatal conductance and transpiration rate varied
among tree species and were related to light intensity.
Key words: Photosynthesis, CO2 absorption, trees
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