Trees and their role in seasonal dynamics of forest nitrous oxide (N2O) and methane (CH4) exchange

0544674 - ÚVGZ 2022 US eng A - Abstrakt
Macháčová, Kateřina - Vainio, E. - Urban, Otmar - Pihlatie, M.
Trees and their role in seasonal dynamics of forest nitrous oxide (N2O) and methane (CH4) exchange.
AGU Fall Meeting. American Geophysical Union, 2020.
[AGU Fall Meeting 2020. 01.12.2020-17.12.2020, online everywhere]
Grant CEP: GA ČR(CZ) GJ17-18112Y; GA MŠMT(CZ) LO1415
Institucionální podpora: RVO:86652079
Klíčová slova: methane * nitrous oxide * forest * tree stems * soil * ecosystem * seasonal dynamics
Obor OECD: Plant sciences, botany
https://agu.confex.com/agu/fm20/meetingapp.cgi/Paper/674061

Recent research has revealed that not only soils and herbaceous plants but also woody plants can be significant sources of nitrous oxide (N2O) and methane (CH4). The capacity of trees to exchange trace gases and their contribution to whole ecosystem exchange vary considerably among tree individuals and species, forest ecosystems, and climatic zones, and depend on soil and climatic conditions, tree size, age and vitality, and seasonal dynamics. Wetland trees seem to be stronger CH4 emitters than upland trees. High N2O emissions were detected mostly in trees under (artificially) increased soil N2O concentrations, while exceptional studies under natural field conditions revealed only low N2O emissions or even N2O uptake.
Trvalý link: http://hdl.handle.net/11104/0321509