Summary
This narrative review examines microbiological indicators as tools for evaluating agricultural impacts on soil health, addressing a gap where traditional soil assessments have emphasised physical and chemical properties over biological ones. The authors synthesise evidence that microbial indicators respond rapidly to environmental change and propose three functional categories of measurement, identifying microbial biomass carbon, respiration, and decomposition as the most interpretable and reliable metrics. The review highlights current limitations in applying microbial taxonomy for soil health diagnostics and calls for standardised assessment criteria to improve adoption in land management.
Regional applicability
The framework for microbiological soil health assessment is directly applicable to UK farming practice and policy, particularly for monitoring organic and regenerative farming transitions. However, UK-specific standardised criteria and thresholds for these indicators remain absent, limiting immediate adoption in agri-environment schemes and farm advisories.
Key measures
Microbial biomass carbon; basal respiration; decomposition rates; microbial taxonomic composition; microbial diversity; microbial activity
Outcomes reported
The review evaluated microbiological indicators (microbial biomass and abundance, taxonomic composition and diversity, and microbial activity) as tools for assessing soil health responses to agricultural practices. The study identified microbial biomass carbon, basal respiration, and decomposition rates as the most reliable indicators, whilst noting limitations in diagnostic capability of microbial taxonomic composition.
Topic tags
Dig deeper with Pulse AI.
Pulse AI has read the whole catalogue. Ask about this record, its theme, or how the findings apply to UK farming and policy — every answer cites the underlying studies.