Summary
This narrative review by Rattan Lal examines the interconnections between soil organic matter dynamics and global food security. The paper synthesises evidence suggesting that widespread SOM depletion undermines soil fertility, water-holding capacity, and crop productivity—particularly in degraded agroecosystems—and argues that strategic restoration of SOM through improved soil management can simultaneously address food insecurity, land degradation, and climate mitigation. The review presents both agronomic practices and policy frameworks intended to support large-scale SOM recovery.
Regional applicability
The review's principles on SOM restoration and fertility management apply to UK farming, though specific recommendations may require adaptation to cooler, wetter climates and existing soil carbon stocks. UK policymakers and land managers can draw on the global evidence synthesis to inform agri-environment schemes and soil health targets, particularly where intensive arable or grassland systems have depleted organic matter reserves.
Key measures
Soil organic matter concentrations, soil fertility indicators, water retention capacity, crop yield, land degradation metrics, carbon sequestration potential
Outcomes reported
The review synthesises evidence on relationships between soil organic matter (SOM) depletion and food insecurity, soil degradation, and productivity loss. It presents agronomic and policy interventions for SOM restoration at landscape and global scales.
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.