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KMID : 1024520150240020207
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Journal of the Environmental Sciences
2015 Volume.24 No. 2 p.207 ~ p.219
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A Study on the Estimation of BVOCs Emission in Jeju Island (2): Emission Characteristic and Situation
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Lee Ki-Ho
Kim Hyeong-Cheol
Huh Chul-Gu
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Abstract
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The purpose of this study is to show the geographical distribution and the temporal variation of the emission amount of
biogenic volatile organic compounds(BVOCs) emanated from forests at Jeju Island.
The total emission amount of BVOCs calculated by using the CORINAIR Methodology is 3612 ton yr-1 at Jeju Island.
More than half of BVOCs emissions is come from coniferous forest, and 45 per cent from broad leaved forest. The others is attributed to grassland. Of total emission of BVOCs, isoprene accounts for 28 per cent, monoterpene for 32 per cent, and other VOCs for about 40 percent, respectively. It can be shown that 3000~10000 kg yr-1 of BVOCs is emitted at the zone with dense forest from an altitude of 500 m to the top of Mt. Halla, and less than 1500 kg yr-1 at the zone an altitude of below 500 meters.
The monoterpene emission is more than 1500 kg yr-1 due to the existence of a colony of Abies koreana at the place with more than 1500 meters and a community of Pinus thunbergii and Cryptomeria japonica at the elevation of 500~700 m. In the case of isoprene emission, there is 1500~3000 kg yr-1 at the zone of an elevation from 700 m to 1500 m due to dense broad leaved forest and very little of its emission at an elevation of more than 1500 meters because there is hardly broad leaved trees grown.
In this study, emission of BVOCs according to the altitude above sea level is estimated under the situation of lack of the data for broad leaved tree. More detailed data and information for the distribution of broad leaved trees are needed in order to calculate more realistic BVOC emission.
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KEYWORD
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Jeju Island, Conifer, Broad leaved tree, Monoterpene, Isoprene
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