Nitrogen saturation induced during winter by experimental NH4NO3 addition to a forested catchment
| Autor: | I. Andersson, Hans Hultberg, N. Dise, Richard F. Wright, U. Nyström |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Hydrology
geography geography.geographical_feature_category Potential risk Health Toxicology and Mutagenesis Taiga Drainage basin chemistry.chemical_element Growing season General Medicine Toxicology Pollution Soil contamination Nitrogen chemistry Environmental science Surface runoff Saturation (chemistry) |
| Zdroj: | Environmental Pollution. 84:145-147 |
| ISSN: | 0269-7491 |
| DOI: | 10.1016/0269-7491(94)90097-3 |
| Popis: | To investigate the potential risk of 'nitrogen saturation' in Scandinavian boreal forests, the authors are experimentally adding 30-50 kg N ha(-1) year(-1) as NH4NO3 in precipitation to an entire 0.52-ha 80-year-old spruce forested catchment at Gårdsjön, near Gothenburg on the Swedish west coast. NO3 concentrations in runoff increased from 0 to about 7 microeq liter(-1) (maximum pulse of 43 microeq liter(-1)). The increase occurred in winter; during the April-October growing season, NO3 concentrations were very low. The speed of the response suggests that these forests are already close to saturation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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