Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Gas pooling : A sampling technique to overcome spatial heterogeneity of soil carbon dioxide and nitrous oxide fluxes. / Arias-Navarro, Cristina; Díaz-Pinés, Eugenio; Kiese, Ralf et al.
In: Soil Biology and Biochemistry, Vol. 67, 12.2013, p. 20-23.Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Gas pooling
T2 - A sampling technique to overcome spatial heterogeneity of soil carbon dioxide and nitrous oxide fluxes
AU - Arias-Navarro, Cristina
AU - Díaz-Pinés, Eugenio
AU - Kiese, Ralf
AU - Rosenstock, Todd S.
AU - Rufino, Mariana C.
AU - Stern, David
AU - Neufeldt, Henry
AU - Verchot, Louis V.
AU - Butterbach-Bahl, Klaus
PY - 2013/12
Y1 - 2013/12
N2 - Small-scale spatial variability in soil carbon dioxide (CO2) and nitrous oxide (N2O) fluxes poses serious challenges to the experimental design, and number of gas samples needed to provide a reliable estimate of flux usually exceeds analytical capacities. We pooled gas samples -analogously to soil pooling - toovercome this challenge. Our sample pooling technique collects a composite gas sample from several chambers instead of the conventional practise of analyzing samples from chambers individually, thusreducing numbers of gas samples. The method was verified to be reasonably accurate in forest, grassland and agricultural fields over a four week measurement campaign. Pooling technique results differed by2-8% for CO2 and by 3-4% for N2O when compared to individual chamber means. That shows pooling of gas samples across individual static chambers is an acceptable approach to integrate spatial heterogeneity.
AB - Small-scale spatial variability in soil carbon dioxide (CO2) and nitrous oxide (N2O) fluxes poses serious challenges to the experimental design, and number of gas samples needed to provide a reliable estimate of flux usually exceeds analytical capacities. We pooled gas samples -analogously to soil pooling - toovercome this challenge. Our sample pooling technique collects a composite gas sample from several chambers instead of the conventional practise of analyzing samples from chambers individually, thusreducing numbers of gas samples. The method was verified to be reasonably accurate in forest, grassland and agricultural fields over a four week measurement campaign. Pooling technique results differed by2-8% for CO2 and by 3-4% for N2O when compared to individual chamber means. That shows pooling of gas samples across individual static chambers is an acceptable approach to integrate spatial heterogeneity.
KW - Composite sample
KW - Pooling technique
KW - Soil CO and NO fluxes
KW - Spatial variability
KW - Static chamber
U2 - 10.1016/j.soilbio.2013.08.011
DO - 10.1016/j.soilbio.2013.08.011
M3 - Journal article
AN - SCOPUS:84883342456
VL - 67
SP - 20
EP - 23
JO - Soil Biology and Biochemistry
JF - Soil Biology and Biochemistry
SN - 0038-0717
ER -