Summary
Lal (2009) presents a conceptual and empirical synthesis linking soil degradation processes to inadequate human nutrition, arguing that erosion, organic matter depletion, and nutrient mining reduce the micronutrient density of crops and contribute to hidden hunger globally. The paper integrates soil science, agronomy, and nutrition perspectives to demonstrate that soil health is a foundational determinant of dietary quality, particularly in low-income agricultural systems. This work suggests that soil restoration and conservation are essential public health interventions.
Regional applicability
Whilst the paper draws on global examples, the mechanistic framework applies to UK farming: intensively managed arable and grassland systems also experience organic matter decline and nutrient mining, which may reduce nutrient density of locally grown food. The argument is particularly relevant to food security policy and sustainable intensification debates in temperate regions.
Key measures
Soil organic matter content, soil nutrient stocks (N, P, K, micronutrients), crop yield, crop nutrient concentration, human micronutrient status
Outcomes reported
The study examines the mechanistic links between soil degradation (erosion, organic matter loss, nutrient depletion) and reduced crop nutrient density, with implications for human dietary adequacy and hidden hunger.
Topic tags
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