Correlation Analysis Between Terpene and Meteorological Factors at Artificial Coniferous Forest of Mt. Moodeung

Abstract

There are many factors to influence the amount of terpene at the forest. However, it is poorly understood whether the amount is altered by meteorological factors. In order to study correlation analysis between terpene amount and meteorological(i.e., temperature, humidity, wind speed, solar radiation) and environmental factors(i.e., oxygen, carbonb dioxide) at the artificial coniferous forest of Chamaecyparis obtusa (site 1) and Cryptomeria japonica (site 2) nearby the 1 st reservoir at Mt. Moodeung, the research was executed during April to November in 2011. Forest density at site 1 was 1,692 trees/ha, being occupied with 87.2% of Chamaecyparis obtusa, higher than 925 trees/ha at site 2. Carbon dioxide at site 1 was in the range of 385∼410 ppm in June, similar to at Anmyundo(395 ppm in 2010). Solar radiation has positive correlation with ambient temperature and inversely negative with relative humidity. Main species of terpene released were α -pinene, camphene, β-pinene, cymene, δ-limonene and camphor at two sites and terpene was more effluent at spring and summer than at fall. The large amount of terpene was emitted in the afternoon than in the morning under the influence of the wind speed and the topographical property. The terpene amount has positive correlation with relative humidity and oxygen, and negative with wind speed and soil temperature. Because correlations of α-pinene and other terpene materials showed statistically significant within p=0.01. α-pinene could be suggested as the basic material in explaining the amount of other terpene materials.

Characteristics and distribution of terpenes in South Korean forests

“…A similar pattern was observed in studies at the main trails of Mt. Mudeung in the recreation forest in the North Chungcheong-Province area, Ulsan, and Busan (Byeon et al 2011, Lee et al 2012a, Lee et al 2012b, Jang and Kim 2015. However, the concentration of terpenes in the air was not consistently correlated with seasonal temperature changes, probably due to rainfall and other factors .…”

“…However, the concentration of terpenes in the air was not consistently correlated with seasonal temperature changes, probably due to rainfall and other factors . The seasonal variation of the terpene concentration in the air differed depending on the type of terpene; the concentrations were the highest during the summer for α-pinene and β-pinene, during spring for cymene and d-limonene, and during autumn for camphene (Lee et al 2012a). Fig.…”

“…Jiri increased with higher temperatures (Guenther et al 1991). However, tree species as well as growing conditions, including climatic conditions and soil qualities, also appeared to affect the emission rates of VOCs ; it is likely that several complex factors such as season and many other factors are more important with regard to the emission rates of terpenes than a single factor such as temperature (Ji et al 2002, Lee et al 2012a). …”

“…Two studies investigated monoterpene emissions at Mt. Mudeung located in Gwangju (Lee et al 2012a, Lee, et al 2015a. The authors reported that 11~15 terpenes were found in several different sampling sites in spring and that α-pinene was the dominant compound followed by coumarin and sabinene (Lee, et al 2015a, b).…”

A Study on the Distribution Characteristics of Terpene at the Main Trails of Mt. Mudeung

“…5,23) 19세기 말 독일에서 물치료로부터 시작된 크나이 프 요법은 더욱 다양화되어 운동, 음식, 향기, 정신 작용에 의해 질병을 치유하게 되고, 최근 일본의 경 우 테마숲길, 산림산책로, 의료, 숙박시설까지 갖춘 산림테라피기지를 48개소나 운영하고 있고, 테라피 로드는 5개소를 운영하고 있다. 3,4) 산림지역의 피톤치드 물질 중 질병의 치유효과가 있는 테르펜은 침엽수가 활엽수보다 2~5배 이상 많 이 배출되고, 정유함량이 수종별로 다르며 산림의 공 기 중에서는 지형, 온•습도, 빛 등의 여러 환경인 자의 영향을 받는 것으로 알려져 있다. [5][6][7] 과거에는 침엽수의 수종별 테르펜 물질 배출속도 연구를 chamber 내 밀폐된 공간에서 수행하였으나 최근에 는 국내 유명산의 열린 공간 숲 속에서 테르펜 발 생량에 대한 연구를 수행해오고 있다.…”