Summary
This multi-authored international review examines the 4p1000 initiative—a commitment to increase global soil organic carbon stocks by 0.4% annually—as a climate mitigation and sustainable development strategy. Drawing on expertise from soil scientists and policy specialists across multiple continents, the authors assess both the biophysical opportunities and the substantial practical, economic, and governance constraints to realising this target. Whilst soil carbon sequestration offers genuine co-benefits for soil health and productivity, the paper indicates that the initiative's global goal faces significant limitations related to regional variability, measurement uncertainty, and the need for sustained farmer engagement and long-term policy support.
UK applicability
The findings are relevant to UK agriculture's climate mitigation potential and soil health policy objectives. However, the paper's emphasis on regional variability and measurement challenges suggests that UK-specific research on carbon sequestration rates under temperate maritime conditions and appropriate monitoring protocols would be necessary to translate global targets into locally achievable commitments.
Key measures
Annual soil organic carbon sequestration rates (%); regional and sectoral feasibility; measurement and monitoring uncertainty; policy and institutional enablers and barriers
Outcomes reported
The paper analyses the biophysical potential, practical constraints, and governance challenges associated with implementing the 4p1000 initiative's target of 0.4% annual soil organic carbon stock increase globally. It reports on regional variability in sequestration potential, measurement uncertainty, and the socio-economic factors necessary for sustained farmer adoption.
Topic tags
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