This chapter presents the results of the dissertation. The results are built upon the CO flux and concentration values determined following the methodology of the previous chapter. Description will be given about the measured concentration data in section . The calculation methodology of Net Ecosystem Exchange (NEE) and the related conclusions will be described in section . Comparison and critical evaluation of the measured fluxes will be presented in section . The response of the carbon exchange process to the environmental conditions will be evaluated in section . Seasonal and interannual variability of NEE will be described in section for the 82 m (large scale) system and for the 3 m (local) system. Error assessment will be presented in section .