Relationship between mineralisable nitrogen and microbial biomass in a range of plant litters, peats, and soils of moderate to low pH

Autor: G. P. Sparling, J. A. Kings, P. B. S. Hart
Rok vydání: 1986
Předmět:
Zdroj: New Zealand Journal of Agricultural Research. 29:681-686
ISSN: 1175-8775
0028-8233
DOI: 10.1080/00288233.1986.10430463
Popis: The mineralisation of nitrogen (N) under aerobic and anaerobic (waterlogged) conditions, and the microbial biomass carbon (C) content (using the substrate-induced respiration method) were measured in a range of plant litters, peats, and soils of moderate to low pH. The anaerobic incubation method appeared to be a more reliable indicator of the mineralisable N content of these samples than the aerobic method. The latter method sometimes gave an overall net decrease of inorganic N over the incubation period. There was a positive, highly significant, linear correlation between the microbial biomass C content and the amount of N mineralised anaerobically. The relationship between the microbial biomass C and the N mineralised by aerobic incubation was also positive, but showed greater variability. Both microbial biomass C and anaerobic N measurements were sensitive to previous changes in management from indigenous forestry to exotic forestry and grassland development. This suggests that these methods ...
Databáze: OpenAIRE
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