X-ray Computed Micro-Tomography Indices of Soil Microstructure within a Tree-Based Intercropping System

Date

2014-09-15

Authors

Jefferies, Daniel

Journal Title

Journal ISSN

Volume Title

Publisher

University of Guelph

Abstract

X-ray computed micro-tomography surface soil microstructural indices associated with a 25-year-old tree-based intercropping (TBI) system and an adjacent sole-cropped conventional agricultural system at the University of Guelph’s Agroforestry Research Station were investigated spatially and temporally. At the level of observation of this analysis, tree species have little effect on X-ray μCT measured void characteristics. Void phase parameters between the TBI and solecrop systems were similar due to the same agricultural management adopted in both cropping areas. However, there was a very strong indication of void phase parameters change with time. Ultimately, void phase parameters and soil matrix radiodensity variability appear to be dynamic and difficult to understand at a system level as they’re influenced by many variables.

Description

Keywords

soil, X-ray computed tomography, tree-based intercropping

Citation