Deposition of ammonia to the forest floor under spruce and beech at the Höglwald site

摘要: Laboratory and field measurements of the flux ammonia to forest floor canopies spruce beech stands at Hoglwald site in southern Bavaria are reported. Measurements were performed with an open chamber method. A linearity between concentration from atmosphere ground canopy was detected. Deposition showed no saturation even air concentrations up 50 μg NH3 m−3 air. Temperature, water content moss layer had a minor influence on deposition velocity laboratory experiments. higher (1.3 cm s−1), limed (1.17 s−1) compared stand (0.79 s−1). In studies, diurnal course detected highest velocities midday during night times, but not climatic chamber. The estimated app. 10 kg N ha−1 yr−1 for soil under spruce, 9 6 ha−1yr−1 beech. fluxes interpreted as stands.