Gas exchange between soil, plants and atmosphere
Co-organized by SSS9
Convener: Katerina Machacova | Co-conveners: Christof Ammann, Bernard Longdoz, Martin Maier, Jukka Pumpanen, Kaido Soosaar, Barbara Kitzler, Nicholas Nickerson
| Attendance Fri, 08 May, 08:30–12:30 (CEST)

Terrestrial (semi-)natural and managed ecosystems like forests, grasslands, croplands and wetlands are important sources and/or sinks for greenhouse gases (GHGs: CO2, CH4, N2O) as well as for other trace gases (VOCs, NH3, NO, HONO, Rn, He, etc.). Soils sustain complex patterns of life and act as biogeochemical reactors. Production and consumption of gases and their transport in the soil result in typical patterns of gas concentrations that play a fundamental role affecting many soil functions, such as root and plant growth, microbial activity, and stabilization of soil organic carbon. Plants can contribute to ecosystem exchange by uptake and transport of soil-produced gases to the atmosphere, in-situ production and consumption of gases in plant tissues, and alternation of carbon- and nitrogen-turn-over in adjacent soil. However, the contribution of these individual processes to the net ecosystem GHGs exchange is still unclear and seems to depend on many aspects as plant/tree species, ecosystem type, soil type and conditions, environmental parameters and seasonal dynamics.
Due to the simultaneous influence of various environmental drivers and in case of managed land also management activities, the flux patterns in soil-plant-atmosphere systems are often complex and difficult to attribute to individual drivers. However, it is clear that Interactions between soil, vegetation and the atmosphere exert a crucial role controlling the global budget of these gases and need to be well understood to make any predictions for future.
The session addresses experimentalists and modellers working on trace gas fluxes and their dynamics, production and consumption processes, transport mechanisms and interactions in terrestrial ecosystems at any relevant scale, and from the full climatic and hydrological ecosystem range. We welcome also contributions presenting methodological aspects, development and application of new devices and methods, and modelling studies that seek to integrate our understanding of trace gas exchange in terrestrial ecosystems.

Public information:
EGU this year is different than it used to be. We will be able to use the “Sharing Geoscience Online” platform to present and exchange about our research data and results.
But EGU is not only sharing scientific content, but it is also meeting people. We always had session dinners in our session, where people could meet, have a drink, and exchange ideas about science and life in general.

We want to continue this tradition.
We will have a “Session-Dinner”-at-home online on Thursday, May 7, 19:00 (Vienna Time)

If you are interested in joinnig us, you are welcome - please let me know, and I ll share the link:

Kind regards


Session assets

Session materials Download all presentations (161MB)