Effects of Extreme Temperature and Precipitation Events on Daily CO2 Fluxes in the Tropics

Gushchina, D.; Tarasova, M.; Satosina, E.; Zheleznova, I.; Emelianova, E.; Novikova, E.; Olchev, A.

Авторы: Gushchina D., Tarasova M., Satosina E., Zheleznova I., Emelianova E., Novikova E., Olchev A.
Журнал: CLIMATE
Том: 11
Номер: 6
Год издания: 2023
Номер статьи: 117
DOI: 10.3390/cli11060117
Аннотация: The effects of anomalous weather conditions (such as extreme temperatures and precipitation) on CO2flux variability in different tropical ecosystems were assessed using available reanalysis data, as well as information about daily net CO2 fluxes from the global FLUXNET database. A working hypothesis of the study suggests that the response of tropical vegetation can differ depending on local geographical conditions and intensity of temperature and precipitation anomalies. The results highlighted the large diversity of CO2flux responses to the fluctuations of temperature and precipitation in tropical ecosystems that may differ significantly from some previously documented relationships (e.g., highe CO2 emission under the drier and hotter weather, higher CO2 uptake under colder and wetter weatherconditions). They showed that heavy precipitation mainly leads to the strong intensification of meandaily CO2 release into the atmosphere at almost all stations and in all types of study biomes. For the majority of considered tropical ecosystems, the intensification of daily CO2 emission during cold and wet weather was found, whereas the ecosystems were predominantly served as CO2 sinks from the atmosphere under hot/dry conditions. Such disparate responses suggested that positive and negative temperature and precipitation anomalies influence Gross Primary Production (GPP) and Ecosystem Respiration (ER) rates differently that may result in various responses of Net Ecosystem Exchanges (NEE) of CO2 to external impacts. Their responses may also depend on various local biotic and abiotic factors, including plant canopy age and structure, plant biodiversity and plasticity, soil organic carbon and water availability, surface topography, solar radiation fluctuation, etc.
Добавил в систему: Железнова Ирина Владимировна

	ИСТИНА	Войти в систему Регистрация
	ИСТИНА ИНХС РАН
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

ИСТИНА ИНХС РАН

Effects of Extreme Temperature and Precipitation Events on Daily CO2 Fluxes in the Tropicsстатья

Прикрепленные файлы