Biology and Fertility of Soils

, Volume 28, Issue 4, pp 403–406

Spatial variability of N2O emissions and soil parameters of an arable silt loam – a field study

Authors

  • J. Clemens
    • Institut für Agrikulturchemie, Meckenheimer Allee 176, D-53115 Bonn, Germany Fax: +49-228-732489
  • M. P. Schillinger
    • Department of Soil Physics; University of Bayreuth, Germany
  • H. Goldbach
    • Institute of Agricultural Chemistry, University of Bonn, Germany
  • B. Huwe
    • Department of Soil Physics; University of Bayreuth, Germany
SHORT COMMUNICATION

DOI: 10.1007/s003740050512

Cite this article as:
Clemens, J., Schillinger, M., Goldbach, H. et al. Biol Fertil Soils (1999) 28: 403. doi:10.1007/s003740050512

Abstract

 The spatial in situ variability of soil N2O emissions (measured by micro-chambers, radius 0.033 m), N2O content, water content, NO3 , NH4 +, inorganic carbon and organic carbon concentrations was investigated on a silt loam by means of geostatistical methods and nonparametric statistics. The sampling grid consisted of different spacings between sampling points which ranged from 0.1 m to 50 m. There were no significant correlations between N2O emissions and soil parameters (P>0.1) when all the sampling points were considered. In the centre of the grid a "hot area" was localized with significantly higher N2O emissions, and NO3 and NH4 + concentrations (P≤0.05). Within this hot area the N2O soil content significantly correlated with N2O emissions (P≤0.05). When semiovariograms were computed without data of the hot area samples, N2O emissions showed a weak spatial correlation (range: 4.3 m). The calculations including all data led to pure nugget effects for all parameters except for soil water content (range >40 m) and N2O soil content (range 16.4 m).

Key words N2O emission Spatial variability Geostatistics Variogram analysis Micro-chambers

Copyright information

© Springer-Verlag Berlin Heidelberg 1999