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FOR 536 P6: Extrapolating water and carbon fluxes of managed grasslands in time and space based on surface and airborne observations
Project
Project code: DFG FOR 536
Contract period: 01.01.2004
- 01.01.2016
Purpose of research: Basic research
In Inner Mongolia’s grasslands momentum, energy, water and carbon fluxes between the surface and the atmosphere are modified by grazing and climate change. These processes have been studied in the 1st phase of the RG by micrometeorology and remote sensing. Land-use classification methods and field measurement techniques have been successfully applied to show large effects of grazing on the momentum and carbon exchange as well as on the spectral signature of the surface. In the 2nd phase surface observations will address the large interannual and spatial variability. The “permanent” station continues to serve as a reference, also to assist the manipulation experiment. The spatial distribution of fluxes will be addressed by a roving tower concept including new sites (like the drier Stipa grandis site) and by the contribution to the “Large Scale Spatial Experiment”. Measurement methods include eddy covariance (EC), spectrometer measurements and thermal imagery. Inverse modelling with the atmospheric boundary layer model HIRVAC will be used to derive highly resolved maps of surface soil moisture from skin temperature. Results will be used (i) to characterize grazing and climate effects at the filed scale, and (ii) to parameterize and validate models at the landscape and regional scale.
Section overview
Subjects
- Soil science
