Microscale-scale measurement of potential nitrification rates of soil aggregates

被引：55

作者：

Hoffmann, Heike

Schloter, Michael

Wilke, Berndt-Michael

机构：

[1] Berlin Univ Technol, Inst Ecol, D-10587 Berlin, Germany

[2] Tech Univ Berlin, Inst Ecol, Berlin, Germany

[3] Inst Soil Ecol, GSF Natl Res Ctr Environm & Hlth, D-85764 Neuherberg, Germany

来源：

BIOLOGY AND FERTILITY OF SOILS | 2007年 / 44卷 / 02期

关键词：

nitrification; soil aggregates; oxygen diffusion;

D O I：

10.1007/s00374-007-0227-5

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

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.

引用

页码：411 / 413

页数：3

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