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X-ray tomography to incorporate redox conditions into soil carbon turnover models


EMSL Project ID
48750

Abstract

We suggest that X-ray tomography can be successfully employed to generate numerical values of a) total pore space, b) pore geometry, c) pore size distribution and d) pore connectivity at relevant pore scales. We propose that such a parameter set should allow us to predict the extent to which a given soil structure will yield anaerobic microsites, i.e. microbial microhabitats with unique metabolic characteristics. Performing this work for relatively large soil volumes (cm-scale) will generate information at a scale large enough to support the translation of process knowledge into pedon and landscape scale submodels

Project Details

Project type
Exploratory Research
Start Date
2015-04-01
End Date
2015-09-30
Status
Closed

Team

Principal Investigator

Markus Kleber
Institution
Oregon State University

Team Members

Thomas Wanzek
Institution
Oregon State University

Peter Nico
Institution
Lawrence Berkeley National Laboratory

Marco Keiluweit
Institution
University of Massachusetts Amherst

Scott Fendorf
Institution
Stanford University

Related Publications

Wanzek T., M. Keiluweit, T. Varga, A. Lindsley, P.S. Nico, S. Fendorf, and M. Kleber. 2018. "The Ability of Soil Pore Network Metrics to Predict Redox Dynamics Is Scale Dependent." Soil Systems 2, no. 66:1-25. PNNL-SA-141472. doi:10.3390/soilsystems2040066