SENYAWA-SENYAWA ORGANIK TANAMAN YANG MUDAH MENGUAP MERUPAKAN PERTAHANAN TERHADAP IKLIM YANG PANAS
Abstract: Volatile Organic
Compounds (VOCs) are natural plant product, and is produced and emitted by many
trees in tissue pass through physiological process. VOCs play an important role
in atmospheric chemistry. VOCs are diverse, including isoprene, mono-and
sesquiterpenes, alcohols, aldehydes, ketones, and esters. VOCs emissions
measured variation at unpolluted site, including forests, croplands, and
grasslands. Their concentrations of emission increase the most of effect of the
global environmental change, including land use changes and warming. Study
emission of VOCs (isoprene) from leaves has established in laboratory and
field, and emission rate increased exponentially with increasing temperature up
to 40˚C (the maximum level of emission rate of 479.1 ųmol m-2 s-1), and
emission rates for light intensity maximum of 1600 μmol m-2 s-1 was 194,9 μg
g-1 h-1. VOCs emissions represent a significant carbon loss in the plant
photosynthesis process. These evidenced VOCs dependent on the environmental
conditions and physiology of the plant. Therefore, VOCs are produced by plants
both negative and positive feedback to the climate warming. Therefor, the
estimates of VOCs emission from tropical forests need to be revised upward,
expanded and to evaluate more precisely to other tree species in tropical area.
Key words: VOCs,
photosynthesis, trees, forest ecosystem, and the global environmental change
Penulis: Parlindungan Tambunan
Kode Jurnal: jpkehutanandd080010
