Journal
CRITICAL REVIEWS IN PLANT SCIENCES
Volume 28, Issue 3, Pages 164-178Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/07352680902776556
Keywords
soil carbon; wet oxidation; dry combustion; inelastic neutron scattering; remote sensing; laser induced breakdown spectroscopy
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Determining soil carbon (C) with high precision is an essential requisite for the success of the terrestrial C sequestration program. The informed choice of management practices for different terrestrial ecosystems rests upon accurately measuring the potential for C sequestration. Numerous methods are available for assessing soil C. Chemical analysis of field-collected samples using a dry combustion method is regarded as the standard method. However, conventional sampling of soil and their subsequent chemical analysis is expensive and time consuming. Furthermore, these methods are not sufficiently sensitive to identify small changes over time in response to alterations in management practices or changes in land use. Presently, several different in situ analytic methods are being developed purportedly offering increased accuracy, precision and cost-effectiveness over traditional ex situ methods. We consider that, at this stage, a comparative discussion of different soil C determination methods will improve the understanding needed to develop a standard protocol.
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