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Impact of N-input by wet deposition on N-trace gas fluxes and CH₄-oxidation in spruce forest ecosystems of the temperate zone in Europe

Butterbach-Bahl, K.; Gasche, R.; Huber, Ch.; Kreutzer, K.; Papen, H.

In an effort to elucidate the impact of N-deposition from the atmosphere on trace gas fluxes (N$_2$O, NO, CH$_4$) from soils of temperate coniferous forests, two spruce forest sites in Germany and Ireland with comparable edaphic and climatic conditions, but with pronounced differences in the amounts of N-input from the atmosphere were compared at different seasons. At the site in Germany trace gas fluxes as well as wet deposition of NH$^{+}_{4}$ and NO$^{-}_{3}$ were recorded continuously over the entire year 1994. Correlation analysis between fluxes and N-input data were performed, in order to elucidate if a direct effect between flux and N-deposition could be demonstrated. At all sampling dates N$_{2}$O fluxes at the site receiving high atmospheric N-input (Höglwald, Germany) were significantly 1.5–5 fold higher than N$_{2}$O emission rates at the site receiving low N-input by wet deposition from the atmosphere (Ballyhooly, Ireland). In contrast to the Höglwald site, at which only emission of N$_{2}$O to the atmosphere was observed, at certain periods the Ballyhooly soil functioned as a sink for atmospheric N$_{2}$O. Methane oxidation rates were significantly lower at the Höglwald site compared to the Ballyhooly site. ... mehr

DOI: 10.1016/S1352-2310(97)00234-3
Zitationen: 118
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 02.1998
Sprache Englisch
Identifikator ISSN: 1352-2310
KITopen-ID: 1000097889
Erschienen in Atmospheric environment
Band 32
Heft 3
Seiten 559–564
Schlagwörter temperate coniferous forests, N2O, NO, CH4 flux rates, wet deposition, NH4+, NO3-
Nachgewiesen in Scopus
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