Large-scale deployment of in-rotation grass cultivation as a multifunctional soil climate mitigation strategy

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Authors

Oskar Englund, Blas Mola-Yudego, Pål Börjesson, Göran Berndes, Christel Cederberg, Ioannis Dimitriou, Nicolae Scarlat

Abstract

The agricultural sector can contribute to climate change mitigation by reducing its own greenhouse gas (GHG) emissions and sequestering atmospheric carbon in vegetation and soils, and by providing biomass for substituting fossil fuels and other GHG intensive products in the energy, industry and transport sectors. New policies at EU level provide incentives for more sustainable land use practices, for example, cultivation systems using perennial plants that provide biomass for food, bioenergy and other biobased products along with land carbon sequestration and other environmental benefits. Based on spatial modelling across more than 81,000 landscapes in Europe, we find that introduction of grass-clover leys into rotations with annual crops could result in soil organic carbon sequestration corresponding to 5-10% of total current GHG emissions from agriculture in EU27+UK, annually until 2050. The combined annual GHG savings from soil carbon sequestration and use of biogas produced in connection to grass-based biorefineries equals 13-48% of current GHG emissions from agriculture. The assessed environmental co-benefits (reduced wind and water erosion, reduced nitrogen emissions to water, and mitigation of impacts associated with flooding) are considerable. Besides policy instruments, new markets for grass biomass, e.g., as feedstock for producing biofuels and protein concentrate, can incentivize widespread deployment of in-rotation grass cultivation.

DOI

https://doi.org/10.31223/X5KW5J

Subjects

Agriculture, Bioresource and Agricultural Engineering, Natural Resources Management and Policy, Other Environmental Sciences, Soil Science

Keywords

agriculture, land use, perennial crops, ley, soil carbon, environmental benefits

Dates

Published: 2021-10-27 00:56

Last Updated: 2021-10-27 07:56

License

CC BY Attribution 4.0 International

Additional Metadata

Data Availability (Reason not available):
Manuscript is under review and data will be shared publically at a later stage.

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