Measurement at the field scale of soil delta13C and delta15N under improved grassland.

Rapid Communications in Mass Spectrometry : RCM
Elizabeth R DixonR Bol

Abstract

Variations in natural abundance of carbon (C) and nitrogen (N) stable isotopes are widely used as tools for many aspects of scientific research. By examining variations in the ratios of heavy to light stable isotopes, information can be obtained as to what physical, chemical and biological processes may be occurring. The spatial heterogeneity of soil delta(15)N- and delta(13)C-values across a range of scales and under different land use have been described by a number of researchers and the natural abundances of the C and N stable isotopes in soils have been found to be correlated with many factors including hydrology, topography, land use, vegetation cover and climate. In this study the Latin square sampling +1 (LSS+1) sampling method was compared with a simple grid sampling approach for delta(13)C and delta(15)N measurement at the field scale. A set of 144 samples was collected and analysed for delta(15)N and delta(13)C from a 12 x 12 grid (in a 1 ha improved grassland field in south-west England). The dimension of each cell of the grid was approximately 11 x 6 m. The 12 x 12 grid was divided into four 6 x 6 grids and the LSS+1 sampling technique was applied to these and the main 12 x 12 grid for a comparison of sample means ...Continue Reading

References

Nov 13, 1978·Archives of Microbiology·P J Weimer, J G Zeikus
Jan 1, 1996·Journal of Mass Spectrometry : JMS·A PolettiniX de la Torre
Feb 17, 2001·Trends in Ecology & Evolution·D Robinson
Sep 1, 1993·Environmental Monitoring and Assessment·H T Schreuder, R L Czaplewski

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Citations

Sep 15, 2012·Rapid Communications in Mass Spectrometry : RCM·Sabine PeukertRichard E Brazier
Oct 21, 2016·Tree Physiology·Alexander W Cheesman, Lucas A Cernusak

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