Summary: Landscape Ecology 16: 377390, 2001.
© 2001 Kluwer Academic Publishers. Printed in the Netherlands.
Detection of edaphic discontinuities with ground-penetrating radar and
James C. Stroh1,, Steve Archer1, James A. Doolittle2 and Larry Wilding3
1Rangeland Ecology and Management, Texas A&M University, College Station, TX 77843-2126, USA
2US Forest Service, 5 Radnor Corp. Center, Suite 200, 100 Matsonford Rd, Radnor, Pa 19087-4285, USA
3Department of Soil and Crop Sciences, Texas A&M University, College Station, TX 77843, USA
(current address: Department of Biology, Morningside College, Sioux City, IA 51106, USA)
Received 7 April 1999; Revised 20 June 2000; Accepted 20 March 2001
Key words: apparent conductivity, argillic horizon, edaphic discontinuity, plant-soil relationships, soil, soil
mapping, soil map unit boundaries, soil survey, spatial variation
Quantification of edaphic properties which may regulate the spatial distribution of vegetation is often limited by
the expense and labor associated with collecting and analyzing soil samples. Here we evaluate the utility of two
technologies, ground-penetrating radar (GPR) and electromagnetic induction (EMI), for rapid, extensive and non-
destructive mapping of diagnostic subsurface features and soil series map unit boundaries.
Strong reflectance from fine-textured, near-surface soils obscured radar signal reflectance from deeper horizons