Summary
This review by Karlen and colleagues, published in Soil and Tillage Research in 2019, synthesises progress in soil health assessment methodology from its conceptual origins through to contemporary frameworks and tools. The authors, based primarily at the USDA Agricultural Research Service, evaluate a range of biological, chemical, and physical indicators and the scoring approaches used to integrate them into composite indices. The paper is likely to identify outstanding methodological challenges — including standardisation, scalability, and sensitivity to management change — and to outline priorities for future assessment tool development.
UK applicability
Although the research draws primarily on a North American evidence base and institutional context, the methodological findings on soil health indicators and scoring frameworks are broadly relevant to UK soil health policy, including the development of assessment tools under agri-environment schemes such as Sustainable Farming Incentive. UK researchers and policymakers working on soil health metrics, including those informing the 25 Year Environment Plan targets, would find this review a useful reference point.
Key measures
Soil health indices; biological, chemical, and physical soil indicators; scoring functions; minimum data sets (MDS); soil quality index scores
Outcomes reported
The paper reviews the development and application of soil health assessment methodologies, evaluating existing frameworks and indicators used to evaluate soil function and quality over time. It likely identifies gaps in current assessment approaches and proposes priorities for future research and standardisation.
Topic tags
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