Biology and Fertility of Soils

, Volume 44, Issue 2, pp 411–413

Microscale-scale measurement of potential nitrification rates of soil aggregates

  • Heike Hoffmann
  • Michael Schloter
  • Berndt-Michael Wilke
Short Communication

DOI: 10.1007/s00374-007-0227-5

Cite this article as:
Hoffmann, H., Schloter, M. & Wilke, BM. Biol Fertil Soils (2007) 44: 411. doi:10.1007/s00374-007-0227-5

Abstract

To improve our knowledge about the effect of soil structure on potential nitrification (PN) rates in different soil aggregate fractions, we adapted and validated the standard method based on International Organization of Standardization (ISO) 15685 to small sample volumes. This assay was used to determine the distribution of PN in soil aggregates obtained from three different sites (natural grassland, agricultural land and forest). Overall, the external surface layers of the aggregates showed higher PN rates than the interior fractions of the aggregates. These differences were more clear in clayey than in sandy soils.

Keywords

NitrificationSoil aggregatesOxygen diffusion

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Heike Hoffmann
    • 1
  • Michael Schloter
    • 2
  • Berndt-Michael Wilke
    • 1
    • 3
  1. 1.Institute of EcologyTechnical University of BerlinBerlinGermany
  2. 2.GSF-National Research Center for Environment and HealthInstitute of Soil EcologyNeuherbergGermany
  3. 3.Institute of EcologyBerlin University of TechnologyBerlinGermany