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A comparison of six methods for measuring soil-surface carbon dioxide fluxes

Journal of Geophysical Research D: Atmospheres

By:
, , , , , , ,

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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 ??mol 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%.

Additional Publication Details

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
Volume
102
Issue:
24
Year Published:
1997
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
28771
Last page:
28777
Number of Pages:
7