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Promoting carbon sequestration in soils: the importance of soil, region and context-specific interventions

Code: 9781801467100
Rattan Lal, CFAES Rattan Lal Center for Carbon Management and Sequestration, The Ohio State University, USA

Chapter synopsis: Despite the importance of soil C reservoirs, global estimates of soil C stocks to different depths (0.5, 1, 2 or 3 m) are highly variable, obtained by diverse and non-standard procedures and are not available at all for several key ecosystems. Soil C stocks, which vary over time and space and with land use and management, are temperature sensitive and vulnerable to climate change. Global hotspot ecosystems must be protected, restored, managed and, in some cases in which land is marginal for agriculture, returned to nature in order to mitigate climate change, improve water quality and strengthen biodiversity. Technologies for restoring soil organic carbon stocks include landscape management, conservation agriculture based on residue mulch with cover cropping and complex rotations, agroforestry, integrated nutrient management, improved grazing and pasture management, reclamation of saline soils and the restoration of degraded soils. Urban soils are a large sink for C and these ecosystems must be designed and managed judiciously.

DOI: 10.19103/AS.2022.0106.14
£25.00
Table of contents 1 Introduction 2 Global distribution of the soil carbon pool among soil types and ecoregions 3 Soil carbon persistence 4 Temperature sensitivity 5 Soil inorganic carbon 6 Blue carbon in coastal ecosystems 7 Black or pyrogenic carbon 8 Frozen carbon and permafrost soils 9 Land use and management 10 Landscape management 11 Salinity management for enhancing soil organic carbon stocks 12 Conservation agriculture, cover cropping and agroforestry 13 Grazing management 14 Nutrient management for sequestration of soil organic carbon 15 Carbon sequestration under urban ecosystems 16 Conclusion 17 Future trends in research 18 References

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