Analyses of NOx and Wet Depositions at Mühleggerköpfl, North Tyrolean Limestone Alps

2002

S. 10-15

6 Abb., 7 Tab., 41 Lit. Ang.

Unselbständiges Werk

200082129

The intensive investigation site "Mühleggerköpfl" in the North Tyrolean Limestone Alps can be classified as a clean-air area site. The mean concentration of NOx are far below the effect-related limit value of the WHO (30 ö NOx m®ß). The gravitational deposition in the open field (bulk deposition) ranged from 10.8 to 14.7 kg N ha®Ü (throughfall: 11.3 to 12.3 kg N ha®Ü a®Ü) in the measuring years 1998 to 2000. Compared to these data, depositions in other forested of the Austrian Alps amounted to up to 30 kg N ha®Ü a®Ü. The gravitational depositions (bulk deposition) alone - without considering dry and occult deposition - slightly exceeded the lower limit of Critical Loads for coniferous and deciduous forests (>10kg N ha®Ü a®Ü), but were below the Critical Loads for calcareous forests (15-20 kg N ha®Ü a®Ü).