|
ИСТИНА |
Войти в систему Регистрация |
Интеллектуальная Система Тематического Исследования НАукометрических данных |
||
Evaluation of the response of a spruce forest ecosystem on climatic changes: Results of modelling experimentsстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 9 июня 2016 г.
- Авторы: Oltchev A., Ibrom A., Morgenstern K., Kreilein H., Gravenhorst G.
- Журнал: Physics and Chemistry of the Earth
- Том: 24
- Номер: 1–2
- Год издания: 1999
- Издательство: Pergamon Press Ltd.
- Местоположение издательства: United Kingdom
- Первая страница: 103
- Последняя страница: 110
- DOI: 10.1016/S1464-1909(98)00019-7
- Аннотация: The physical and chemical environment of forests will change in the future. How forests will react to new conditions is not known yet. In order to get an idea of the sensitivity of present forests to possible atmospheric changes, it is helpful to investigate the physiological response of forest ecosystem to a change of key environmental parameters. In order to estimate the response of a mountain spruce forest to different atmospheric conditions during the summer a six-layer non-steady-state SVAT model (SLODSVAT) was used. Eight scenarios were used for modelling energy and mass exchange during an eleven day summer period, combining different combinations of microclimatic conditions. All atmospheric scenarios were examined for three various CO2 mixing ratio levels: 350ppm (current condition), 450ppm and 550ppm. A scenario “0” assuming the current climatic features at different CO2 contents was considered as well. Structural and physiological adaptation of the forest to the new atmospheric conditions were not taken into account. For all scenarios the modelling results show increased net CO2 flux into the forest with increasing ambient CO2 concentration. Maximum net CO2 uptake was simulated for dry climate scenarios. Transpiration and evapotranspiration rates had similar trends independently of the ambient CO2 concentration used: at cold and wet conditions they decreased, while at warm and dry conditions transpiration and evapotranspiration rates increased. The influence of CO2 concentrations on transpiration rates is of minor importance if compared to changes of temperature, water vapour pressure, cloud amount and atmospheric precipitation as considered in this investigation.
- Добавил в систему: Ольчев Александр Валентинович