JavaScript requeired.
Geochemical Journal
Geochemical Journal An open access journal for geochemistry
subscription
Published for geochemistry community from Geochemical Society of Japan.
Express Letter

Factors affecting monoterpene emission from Chamaecyparis obtusa

TOMOKI MOCHIZUKI, YUKIKO ENDO, SOU MATSUNAGA, JIE CHANG, YING GE, CHENGAI HUANG, AKIRA TANI
Geochemical Journal, Vol. 45, No. 3, P. e15-e22, 2011

ABSTRACT

Monoterpenes are major compounds emitted by plants and contribute to the formation of photochemical oxidants and secondary organic aerosols in the troposphere. We measured monoterpene emissions from Chamaecyparis obtusa, a major coniferous tree species in Japan, in both the field and the laboratory. Short-term monoterpene emission from C. obtusa was typically dependent on temperature but barely dependent on light intensity. We calculated the basal emission rate Es assuming β = 0.09 in the G93 model. Three individual trees showed similar, but large seasonal variations in Es; e.g., 0.21–5.42 μg gDW–1h–1 for a tree showing the highest emission rate. The emission rate was much higher in winter and autumn. Although Es values averaged over 4 seasons indicated that C. obtusa is an intermediate emitter among coniferous trees, our results suggest that the large seasonal variation in Es should be considered in estimating annual monoterpene emission from this species. Furthermore, we found a significant effect of branch-to-branch touching by vibration on monoterpene emission from this species, suggesting that wind effect should be considered in the future for more precise emission estimation.

KEYWORDS

biogenic emission, seasonal variation, vibration, leaf temperature, light intensity

All Issues

Current Issue:
Stats:
Impact Factor: 0.8 (2022)
Submission to final decision: 9.6 weeks (2022)
Geochemical Society of Japan

page top