V10 Flashcards
Biogeoscience:
Land-atmosphere interactions:
Terrestrial biogeosciences:
Biogeowissenschaften:
Interactions:
Biogeochemical feedback processes
Interactions:
Biogeochemical feedback processes
Interactions:
Biogeophysical feedback processes
Global carbon cycle:
Global carbon cycle:
Global forest carbon budget:
Climate services by ecosystems:
Effects of afforestation:
CO2-Aufnahme durch Pflanzen:
Blattoberfläche:
Carbon balance of plants:
CO2 mixing ratios in forests:
Carbon balance of forests:
Carbon fluxes of forests:
Net primary production:
Effects of stress:
Excursus:
Methane and nitrous oxide
Current project:
Carbon fluxes of an urban forest in Moscow
Why?
- 70% of the global GHG emissions from urban areas ⇒ also climate mitigation needs to be strongly addressed in urban areas
- Among the many positive ecosystem services provided by urban forests, the uptake of CO2 is a very important one
- However, there is not a good understanding of the sink strength of such urban forests considering different ecosystems, climate zones, multiple (urban) stressors and many other variables
- Main objective: Quantification of the net ecosystem exchange of an urban forest for a better assessment of its carbon sink strength
Current project:
Carbon fluxes of an urban forest in Moscow
Instrumentation
- Eddy-Covariance system for determination of CO2 and H2O fluxes
- Ultrasonic 3D anemometer (omnidirectional)
- IRGA for CO2 and water vapor
- Mounted on top of a ~35m tall tower
Current project:
Carbon fluxes of an urban forest in Moscow
Results
Current project:
Carbon fluxes of an urban forest in Moscow
Conclusions
- Footprint of the urban forest was a CO2 source in almost every month & wind direction
- Weekday analysis shows a clear effect of anthropogenic influence on the fluxes
-
Possible reasons:
- True footprint includes streets & buildings?
- Soil emissions?
- Stressed ecosystem?
- Parameters for processing optimized?
- Systematic errors?
Carbon fluxes:
