Intercomparison of Chamber Methods for Soil Respiration Measurement in a Phytotron System
2005
Chae, N.Y. (Yonsei University, Seoul, Republic of Korea), E-mail: [email protected] | Kim, R.H. (Korea University, Seoul, Republic of Korea) | Hwang, T.H. (Seoul National University, Seoul, Republic of Korea) | Suh, S.U. (Konkuk University, Seoul, Republic of Korea) | Kim, J. (Yonsei University, Seoul, Republic of Korea) | Son, Y.W. (Korea University, Seoul, Republic of Korea) | Lee, D.W. (Seoul National University, Seoul, Republic of Korea) | Lee, J.S. (Konkuk University, Seoul, Republic of Korea)
Soil CO₂ emission is one of the primary components in carbon balance of terrestrial ecosystems. In soil CO₂ flux measurements, chamber method is currently the most common technique. Prior to compare or synthesize the data collected from different chamber methods, potential biases must be quantified for each measurement system. We have conducted an intercomparison experiment among four closed dynamic chamber systems and an automatic open-closed chamber system in a temperature-controlled phytotron. Due to the disturbed CO₂ concentrations inside the phytotron during the measurements with closed dynamic chambers and the changes in soil water content, the interpretation of the data was difficult to quantify the biases of individual methods.
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