Gross nitrogen mineralization-, immobilization-, and nitrification rates as a function of soil C/N ratio and microbial activity
(2003) In Soil Biology & Biochemistry 35(1). p.143-154- Abstract
- A laboratory experiment was designed to challenge the idea that the ON ratio of forest soils may control gross N immobilization, mineralization, and nitrification rates. Soils were collected from three deciduous forests sites varying in C/N ratio between 15 and 27. They were air-dried and rewetted to induce a burst of microbial activity. The N transformation rates were calculated from an isotope dilution and enrichment procedure, in which (NH4Cl)-N-15 or (NaNO3)-N-15 was repeatedly added to the soils during 7 days of incubation. The experiments suggested that differences in gross nitrogen immobilization and mineralization rates between the soils were more related to the respiration rate and ATP content than to the C/N ratio. Peaks of... (More)
- A laboratory experiment was designed to challenge the idea that the ON ratio of forest soils may control gross N immobilization, mineralization, and nitrification rates. Soils were collected from three deciduous forests sites varying in C/N ratio between 15 and 27. They were air-dried and rewetted to induce a burst of microbial activity. The N transformation rates were calculated from an isotope dilution and enrichment procedure, in which (NH4Cl)-N-15 or (NaNO3)-N-15 was repeatedly added to the soils during 7 days of incubation. The experiments suggested that differences in gross nitrogen immobilization and mineralization rates between the soils were more related to the respiration rate and ATP content than to the C/N ratio. Peaks of respiration and ATP content were followed by high rates of mineralization and immobilization, with 1-2 days of delay. The gross immobilization of NH4+ was dependent on the gross mineralization and one to two orders of magnitude larger than the gross NO3- immobilization. The gross nitrification rates were negatively related to the ATP content and the C/N ratio and greatly exceeding the net nitrification rates. Taken together, the observations suggest that leaching of nitrate from forest soils may be largely dependent on the density and activity of the microbial community. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/135943
- author
- Bengtsson, Göran LU ; Bengtson, Per LU and Månsson, Katarina LU
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Soil Biology & Biochemistry
- volume
- 35
- issue
- 1
- pages
- 143 - 154
- publisher
- Elsevier
- external identifiers
-
- wos:000181792600015
- scopus:0037229526
- ISSN
- 0038-0717
- DOI
- 10.1016/S0038-0717(02)00248-1
- language
- English
- LU publication?
- yes
- id
- 23d281c0-41fc-4863-81fd-313fc8b120cc (old id 135943)
- date added to LUP
- 2016-04-01 16:15:03
- date last changed
- 2025-04-04 14:10:51
@article{23d281c0-41fc-4863-81fd-313fc8b120cc,
abstract = {{A laboratory experiment was designed to challenge the idea that the ON ratio of forest soils may control gross N immobilization, mineralization, and nitrification rates. Soils were collected from three deciduous forests sites varying in C/N ratio between 15 and 27. They were air-dried and rewetted to induce a burst of microbial activity. The N transformation rates were calculated from an isotope dilution and enrichment procedure, in which (NH4Cl)-N-15 or (NaNO3)-N-15 was repeatedly added to the soils during 7 days of incubation. The experiments suggested that differences in gross nitrogen immobilization and mineralization rates between the soils were more related to the respiration rate and ATP content than to the C/N ratio. Peaks of respiration and ATP content were followed by high rates of mineralization and immobilization, with 1-2 days of delay. The gross immobilization of NH4+ was dependent on the gross mineralization and one to two orders of magnitude larger than the gross NO3- immobilization. The gross nitrification rates were negatively related to the ATP content and the C/N ratio and greatly exceeding the net nitrification rates. Taken together, the observations suggest that leaching of nitrate from forest soils may be largely dependent on the density and activity of the microbial community.}},
author = {{Bengtsson, Göran and Bengtson, Per and Månsson, Katarina}},
issn = {{0038-0717}},
language = {{eng}},
number = {{1}},
pages = {{143--154}},
publisher = {{Elsevier}},
series = {{Soil Biology & Biochemistry}},
title = {{Gross nitrogen mineralization-, immobilization-, and nitrification rates as a function of soil C/N ratio and microbial activity}},
url = {{http://dx.doi.org/10.1016/S0038-0717(02)00248-1}},
doi = {{10.1016/S0038-0717(02)00248-1}},
volume = {{35}},
year = {{2003}},
}