Retention and stabilization of C-14 labeled dissolved organic carbon in two soil horizons with contrasting contents of pedogenic oxides

(4) University of Amsterdam, Institute of Biodiversity and Ecosystem Dynamics, Earth Surface Science, Amsterdam, Netherlands (k.kalbitz@uva.nl), (1) All-Russian Research Institute of Agricultural Chemistry, Moscow, Russia, (2) University of Hohenheim, Institute of Soil Science and Land Evaluation, Stuttgart, Germany (Sabine.Fiedler@uni-hohenheim.de, (3) University of Bayreuth, Bayreuth Center of Ecology and Environmental Research, Agroecosystem Research, Bayreuth, Germany (kuzyakov@uni-bayreuth.de)