A comparison of six methods for measuring soil-surface carbon dioxide fluxes
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Abstract
Measurements of soil-surface CO2 fluxes are important for characterizing the carbon budget of boreal forests because these fluxes can be the second largest component of the budget. Several methods for measuring soil-surface CO2 fluxes are available: (1) closed-dynamic-chamber systems, (2) closed-static-chamber systems, (3) open-chamber systems, and (4) eddy covariance systems. This paper presents a field comparison of six individual systems for measuring soil-surface CO2 fluxes with each of the four basic system types represented. A single system is used as a reference and compared to each of the other systems individually in black spruce (Picea mariana), jack pine (Pinus banksiana), or aspen (Populus tremuloides) forests. Fluxes vary from 1 to 10 μmol CO2 m−2 s−1. Adjustment factors to bring all of the systems into agreement vary from 0.93 to 1.45 with an uncertainty of about 10–15%.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A comparison of six methods for measuring soil-surface carbon dioxide fluxes |
| Series title | Journal of Geophysical Research D: Atmospheres |
| DOI | 10.1029/97JD01440 |
| Volume | 102 |
| Issue | 24 |
| Year Published | 1997 |
| Language | English |
| Publisher | American Geophysical Union |
| Contributing office(s) | Coop Res Unit Seattle |
| Description | 7 p. |
| First page | 28771 |
| Last page | 28777 |
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