Matching policy and science: Rationale for the ‘4 per 1000 - soils for food security and climate’ initiative

Summary

This paper presents the scientific foundation and policy rationale for the '4 per 1000 - soils for food security and climate' initiative, a framework proposed to harmonise agricultural policy with climate and food security objectives. As suggested by the title and authorship, the work bridges peer-reviewed soil science with international policy mechanisms, articulating how increased soil carbon sequestration (at an annual rate of 0.4%) might simultaneously support adaptation, mitigation, and food production goals. The paper draws on contributions from leading soil scientists and policy analysts to argue for the inclusion of soil carbon targets in national climate pledges and agricultural strategies.

UK applicability

The initiative's principles are directly relevant to UK agricultural policy, particularly in the context of the Environment Act 2021 and agricultural transition schemes that incentivise soil health improvements. The 4 per 1000 framework could inform UK design of carbon credit schemes and sustainable farming support mechanisms, though UK soils' baseline carbon status and regional variation would require local calibration of sequestration targets.

Key measures

Soil organic carbon sequestration rates; alignment between climate policy targets and agricultural soil carbon potential; food security implications of soil carbon management

Outcomes reported

The paper articulates the scientific rationale and policy alignment for the '4 per 1000' initiative, which aims to increase soil organic carbon stocks by 0.4% annually to contribute to climate mitigation and food security. It examines how soil carbon sequestration targets can be integrated with agricultural policy and climate commitments.

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