Work

Approach for using measured soil gas diffusion coefficients in Hydrus 1D with examples from forest soils

Year: 2020

Type: article

Abstract: The use of Hydrus‐1D for modeling soil gas fluxes can be improved by introducing a parameter f obtained by fitting the Millington–Quirk (MQ) tortuosity model to measured gas diffusion coefficients. The approach was tested for data from soil horizons of two sandy forest sites located in Northeast‐Germany. f‐values ranged between 0.41 and 0.54, indicating a more tortuous pore systems than predicted by MQ model (f = 1). The parameter optimization procedure can be carried out by using the statistical software R and the enclosed R‐script.

Source: Journal of Plant Nutrition and Soil Science

DOI: 10.1002/jpln.202000147

Authors: Christoph Haas, Sinikka Paulus, Martin Maier, Hubert Jochheim, Horst H. Gerke

Institutions: Leibniz Centre for Agricultural Landscape Research, University of Freiburg, Max Planck Institute for Biogeochemistry, Forstliche Versuchs- und Forschungsanstalt Baden-Württemberg

Language: English

Topic: Soil and Unsaturated Flow

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,200

Funder: Deutsche Forschungsgemeinschaft