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

摘要: Measurements of soil-surface CO2 fluxes are important for characterizing the carbon budget boreal forests because these can be second largest component budget. Several methods measuring available: (1) closed-dynamic-chamber systems, (2) closed-static-chamber (3) open-chamber and (4) eddy covariance systems. This paper presents a field comparison six individual systems with each four basic system types represented. A single is used as reference compared to other individually in black spruce (Picea mariana), jack pine (Pinus banksiana), or aspen (Populus tremuloides) forests. Fluxes vary from 1 10 μmol m−2 s−1. Adjustment factors bring all into agreement 0.93 1.45 an uncertainty about 10–15%.