Intensive Farming Disrupts Critical Zone Stability, New Study Warns

Editors’ Highlights are summaries of recent papers by AGU’s journal editors. Source: AGU Advances

The critical zone (CZ) is the Earth’s layer extending from bedrock to the vegetation canopy. It encompasses interconnected systems including river corridors, floodplains, soil and root zones, and the near-surface environment where plants interact with the atmosphere. Preserving the CZ requires understanding how it evolves under human pressures such as intensive agriculture.

In a 2026 study, Goodwell et al. applied a data-driven approach to link shifts in the critical zone to indicators of human impact. Their findings provide new insights into transitions, drivers, and predictability across multiple contexts, supporting improved prediction and management of the critical zone amid environmental change.

Abrupt Shifts Linked to Intensive Farming

The authors identified abrupt shifts in key features such as stream chemistry, soil chemistry, and land-atmosphere interactions. These shifts are attributed to intensive management practices, including mechanized planting and harvesting. The resulting human-impacted and naturally occurring regimes in critical zone dynamics have major implications for process understanding and predictive modeling under environmental change.

Methodology: Data-Driven Insights

To detect these regime shifts, the researchers used:

• Time-series clustering to group data and identify distinct regimes
• Dimensionality reduction to simplify system dynamics and pinpoint primary sources of variability

Credit: Goodwell et al. [2026], Figure 1

Study Details and Citation

Goodwell, A. E., Saccardi, B., Dere, A., Druhan, J., Wang, J., Welp, L. R., et al. (2026). Detecting regimes of critical zone processes, drivers and predictability with a data-driven framework. AGU Advances, 7, e2025AV002098. https://doi.org/10.1029/2025AV002098

—Alberto Montanari, Editor-in-Chief, AGU Advances

Text © 2026. The authors. CC BY-NC-ND 3.0

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