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What predicts nitrous oxide emissions and denitrification N‐loss from European soils?
Author(s) -
Kaiser E.A.,
Eiland F.,
Germon J. C.,
Gispert M. A.,
Heinemeyer O.,
Henault C.,
Lind A. M.,
Maag M.,
Saguer E.,
Van Cleemput O.,
Vermoesen A.,
Webster C.
Publication year - 1996
Publication title -
zeitschrift für pflanzenernährung und bodenkunde
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 0044-3263
DOI - 10.1002/jpln.1996.3581590604
Subject(s) - nitrous oxide , denitrification , soil water , environmental science , greenhouse gas , environmental chemistry , soil science , nitrogen , geology , chemistry , oceanography , organic chemistry
Abstract N 2 0 emissions and denitrification N‐losses. precipitation, air temperature, soil moisture, bulk density and content of mineral N were monitored in 9 different agricultural soils in 6 European countries throughout the vegetation period (April to September) 1992 and 1993. N 2 O emissions and denitrification N‐losses were log‐normal distributed, reflecting high temporal changes. While small flux rates (< 2 g N ha −1 d −1 ) were detectable every day, high rates (> 10 g N ha −1 d −1 ) were measured after fertilization. An attempt to relate the emission variables to climate and soil variables was made through the use of correlation analysis. The mean N 2 0 emissions from soil were significantly correlated with the soil properties clay, organic C and mineral N content and the amount of applied mineral N fertilizer. The best prediction of the N 2 O emission rates (r 2 = 0.734) was achieved by multiple linear regression using the soil parameter clay and mineral N. Only 50% of the observed variation could be explained by the factors C org and mineral N, which describe the substrate availability for microbial processes. No successful statistical model was found for the prediction of denitrification N‐losses.