Source |
Conversion factor |
Reference |
Theoretical average |
3 or 4 |
Hardy et al. [51] |
|
|
Jenson and Cox [192] |
Legumes, non-legumes and soils |
2.6 - 6.9 |
Hardy et al. [51] |
Anaerobic soil |
25 |
Hardy et al. [51] |
Suspensions of bacteria |
2-8 - 4.7 |
Hardy et al. [51] |
|
|
Montoya et al. [193] |
Overall range |
0.56 - 22 |
Boddey et al. [59, 61] |
Anabaena (17.3 oC) |
3.96 |
Liengen [111] |
Anabaena (14.0 oC) |
4.88 |
Liengen [111] |
Cyanobacterial crusts |
0.0216-0.073 |
|
Nostoc community |
0.11-0.48 |
|
Sub-alpine meadow & coniferous forest |
7.5 |
Skujins et al. [194] |
Saline soils |
2.1 - 2.8 |
Zechmeister-Boltenstern and Kinzel [195] |
Peat soils |
5.4 |
Zechmeister-Boltenstern and Kinzel [195] |
Grassland, wheat fields, fallow |
3.1-8.6 |
Steyn and Delwiche [52] |
Forest soils |
|
Nohrstedt [196] |
Low water (75% of water saturation) |
2.6 |
|
High water (100% water saturation) |
15.7 |
|
Forest soils |
1.6-5.6 |
Nohrstedt [197] |
Decomposing litter |
3.9 |
Vitousek and Hobbie [198] |
Coastal sediments |
0.11 - 94 |
Seitzinger and Gaber [199] |