In order to quantify GHG balances of managed forest at the landscape scale, it is of utmost importance to measure fluxes of GHG’s in forest ecosystems at different development stages. Harvesting of a forest stand alters its hydrology, increases the risk for nitrogen leaching to the ground water and have potentially large effects on fluxes of GHG’s. Negative climatic and environmental consequences can be expected to be largest during the years directly following harvest, which makes it especially important to study clear-cut forest stands.
The Skogaryd clear-cut site on a podzol soil was replanted with spruce saplings following harvest in 2011. Measurements of GHG fluxes started in 2012 by a group from the Department of Physical Geography and Ecosystem Science, Lund University, with support from SRC in the form of infrastructure and the manpower needed to keep measurements running all year around.
Net fluxes of energy and CO2 is measured using the eddy covariance technique from a 6 m tall tower. The tower is also equipped for measurements of solar radiation and meteorological variables, as well as for spectral measurements aiming at quantifying the state of the vegetation, which in combination with remote sensing can be an important tool to quantify carbon balances at the landscape level. Vegetation growth and phenology is also monitored through a digital camera taking hourly pictures all year around.