Seasonal variation in amount and composition of monoterpenes emitted by young Pinus pinea trees - implications for emission modelling
Current inventories of terpenoids released from vegetation consider only the short term influences of light and temperature on emissions to simulate temporal variation during the year. We studied whole canopy emissions from young Pinus pinea during a 15 month enclosure in CSTR-chambers at JRC Ispra and examined data for long term influences. For the first time, the results provide experimental proof of different terpene sources in conifer foliage causing normalized emission rates to vary by a factor of 50 during the course of a season. A global model to simulate plant emissions is proposed, which accounts for seasonal influences on emissions in addition to the short term effects of temperature and light. The model is tested on field data and discussed for its general application.
Bibliographic Reference: Article: Journal of Atmospheric Chemistry (1999)
Record Number: 199911414 / Last updated on: 1999-10-01
Original language: en
Available languages: en