Serapan Karbondioksida (CO2) Jenis-Jenis Pohon di Taman Buah "Mekar Sari" Bogor, Kaitannya dengan Potensi Mitigasi Gas Rumah Kaca
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 toreducing 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 comparedto monoculture plantation
replacing it. Thus, the trees in forests have an essential role in thefunctioning
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 μmolm-2s-1. The highest was Matoa (13.42
molm-2s-1 ) , followed by Kacapi (12.50μmolm-2s-1), Durian (11.00μmolm-2s-1)
and Nangka (11.00μmolm-2s-1). Transpiration rate was recorded between 4.29 -
9.50 molm-2s-1. The rate of CO 2 assimilation was affected by incident
radiation and thus the quantum leaf (Q leaf) as well as leaf chlorophyll content.
Correlation between CO 2 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.
Penulis: N. Hidayati, M. Reza,
T. Juhaeti & M. Mansur
Kode Jurnal: jpbiologidd110314
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