Radiocarbon · 1980 · 98 citations · 10 references
AgricultureEarth SciencesSoil SciencesSoil BiogeochemistrySoil ChemistrySoil ScienceCarbon AssimilationCarbon CycleSoil Carbon ChemistrySoil Carbon FractionationSoil Organic Matter ChemistrySoil RespirationCarbon Flux In SoilsCarbon Isotopes In SoilMolecular DiffusionMolecular Diffusion In SoilSoil Carbon ModelingSoil Carbon TransportSoil Organic CarbonSoil Organic Carbon Fractionation
Carbon isotope measurements in soil CO 2 are presented and discussed. Soil CO 2 concentration and 13 C profiles were measured using a new technique. A simple model describing the CO 2 transport from the soil to the atmosphere is derived. The finding that CO 2 in the soil is richer in 13 C than the CO 2 leaving the soil is attributed to isotopic fractionation in molecular diffusion.
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C. J. Tranter · Journal of the Mechanics and Physics of Solids · 1959 · 18.5K citations
The Natural Radiation Environment
John W. Winchester · Nuclear Science and Engineering · 1965 · 568 citations