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Mechanisms of soil organic carbon sequestration and implications for management

Code: 9781801465717
Ingrid Kögel-Knabner, Chair of Soil Science, TUM School of Life Sciences and Institute for Advanced Study, Technical University of Munich, Germany; Martin Wiesmeier, TUM School of Life Sciences, Technical University of Munich and Bavarian State Research Center for Agriculture, Institute for Organic Farming, Soil and Resource Management, Germany; and Stefanie Mayer, Chair of Soil Science, TUM School of Life Sciences, Germany

Chapter synopsis: Organic carbon sequestration is delineated from the different mechanisms underlying the storage of organic matter in mineral soils. The scene is set with definitions of the major terms within the complex of organic matter formation in soils, followed by describing the types of organic matter entering the soil and the major processes during turnover and the protective mechanisms leading to organic matter storage in soils. Detritusphere and rhizosphere are identified as soil compartments with high and specific organic matter input. From the process complex of OM degradation and binding, the potential of different soils for sequestering organic carbon is delineated and its limitations discussed with regard to the possibility of C saturation of mineral soils. In the light of these considerations, soil management options are deduced either by increasing organic carbon inputs to the soil by improved land use/management practices or by decreasing organic carbon outputs.

DOI: 10.19103/AS.2022.0106.02

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Table of contents 1 Introduction 2 Potential of different soils for carbon sequestration 3 Soil management options for organic carbon sequestration 4 Acknowledgements 5 References

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