Soil biogeochemicial processes within the critical zone

Jon Chorover, Ruben Kretzschmar, Ferran Garica-Pichel, Donald L. Sparks

Research output: Contribution to journalArticlepeer-review

155 Scopus citations


Many processes that affect soil and water quality occur at the water-wetted interface of weathering products such as clays, oxides, and organic matter. Especially near the sunlit surface of the Critical Zone, these interfaces associate with plant roots and soil organisms to form porous, aggregated structures. Soil aggregates and intervening pore networks give rise to a patchwork of interconnected microenvironments. The ensuing steep geochemical gradients affect weathering processes, fuel the activities of microbes, and drive interfacial reactions that retain and transform rock- or ecosystem-derived chemicals and anthropogenic pollutants.

Original languageEnglish (US)
Pages (from-to)321-326
Number of pages6
Issue number5
StatePublished - Oct 2007


  • Biogeochemical weathering
  • Natural organic matter
  • Soil particles
  • Sorption processes

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Earth and Planetary Sciences (miscellaneous)


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