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DOI:10.1029/2000JD900715 - Corpus ID: 129502262
@article{Pumpanen2001AnOC, title={An open chamber system for measuring soil surface CO2 efflux: analysis of error sources related to the chamber system}, author={Jukka Pumpanen and Hannu Ilvesniemi and Petri Keronen and Ari Nissinen and Toivo Pohja and Timo Vesala and Pertti Hari}, journal={Journal of Geophysical Research}, year={2001}, volume={106}, pages={7985-7992}, url={https://api.semanticscholar.org/CorpusID:129502262}}- J. Pumpanen, H. Ilvesniemi, P. Hari
- Published 27 April 2001
- Environmental Science
- Journal of Geophysical Research
An open dynamic chamber is a widely used method for soil CO2 efflux measurements. However, any uncontrolled air flow between the inside and outside of the chamber that is created by differences between the inflow and outflow rates can cause errors in soil CO2 efflux measurements. Estimates of these errors are reported here. A system was constructed in which compensation air of known CO2 concentration was introduced into the chamber and the CO2 concentration was measured in the outflow. The…
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52 Citations
- J. PumpanenP. Kolari P. Hari
- 2004
Environmental Science
- I. ForbrichL. KutzbachA. HormannM. Wilmking
- 2010
Environmental Science
- 74
- M. PihlatieJ. Pumpanen Timo Vesala
- 2007
Environmental Science
Nitrous oxide (N2O) and carbon dioxide (CO2) fluxes were measured in a boreal forest during two growing seasons with soil gradient and chamber methods. N2O fluxes obtained by these two techniques…
- 114
- PDF
- J. PumpanenH. Ilvesniemi P. Hari
- 2008
Environmental Science
Soil respiration forms a substantial part of the ecosystem respiration. However, the respiration measurements conducted with chambers on the soil surface do not give information on the vertical…
- 89
- Guo LiH. Su Yafang Cheng
- 2022
Environmental Science, Chemistry
Dynamic flow-through chambers are frequently used to measure gas exchange rates between the atmosphere and biosphere on 15 the Earth’s surface such as vegetation and soils. Here, we explore the…
- PDF
- S. SuhYoung-Moon Chun Jae-Seok Lee
- 2005
Environmental Science
Ecological Research
We developed an automatic opening and closing chamber system (AOCC) based on an open-flow dynamic method (open-flow AOCC). The AOCC can be used during all four seasons, even at the surface of…
- 43
- J. PumpanenB. LongdozW. Kutsch
- 2009
Environmental Science
Soil respiration is a major component in the carbon balance of terrestrial ecosystems and has been measured in the field for more than eight decades. In this chapter, we will describe the measurement…
- 33
- PDF
- J. PumpanenH. IlvesniemiP. Hari
- 2003
Environmental Science
Decomposition and root respiration processes, important to C cycling in terrestrial ecosystems, are affected by soil temperature, soil moisture, and other soil properties. For studying the effect of…
- 133
- P. KolariJ. Bäck P. Hari
- 2012
Environmental Science
- 48
- J. PumpanenH. IlvesniemiM. PerämäkiP. Hari
- 2003
Environmental Science
A non‐vented non‐steady state flow‐through chamber and a non‐vented non‐steady state non‐flow‐through chamber technique were used to measure CO2 efflux of a young Scots pine forest on a fertile till…
- 86
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20 References
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Environmental Science
The new design enables measurement of the equilibrium CO 2 efflux, when there is no detectable pressure difference between the chamber and outside nor leakage of CO 2 into or out of the chamber.
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Environmental Science
The improved chamber can give a better and a more reliable estimation of CO 2 evolution from the soil surface compared to existing dynamic chambers, as demonstrated by either the magnitude or the trend of daily variation of measured CO2 effluxes.
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Environmental Science
Rates of carbon dioxide exchange were determined using an infrared gas analyzer in an open chamber system in a field. During 1971 a fan was used to draw air through the chamber; the measured CO2 flux…
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Environmental Science
Soil and ecosystem trace gas fluxes are commonly measured using the dynamic chamber technique. Although the chamber pressure anomalies associated with this method are known to be a source of error,…
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Environmental Science
An “open” chamber for the measurement of soil CO2 efflux has been designed which utilizes an air seal to maintain chamber pressure within 0.004 Pa of atmospheric pressure, eliminating any mass flow…
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Environmental Science, Agricultural and Food Sciences
Flux chambers are useful and convenient tools for measuring gas emissions at soil and water surfaces in agricultural, ecological, environmental, and engineering studies. In this experiment, a closed…
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The objective of this study was to compare the dynamic closed and static chamber techniques for the measurement of soil respiration under field conditions. The static chamber method consistently…
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Environmental Science
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…
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Environmental Science
Tree physiology
Although below-canopy EC fluxes are not necessarily well suited for measuring soil CO(2) efflux in natural forest ecosystems, they provide valuable information about understory gas exchange when used in tandem with soil chambers, indicating that inter-site comparisons are possible if techniques are properly crosscalibrated.
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