Skip to Main Content
GEOREF RECORD

Use of trans-Gaussian kriging for national soil geochemical mapping in Ireland

Chaosheng Zhang, Deirdre Fay, David McGrath, Eamonn Grennan and Owen T. Carton
Use of trans-Gaussian kriging for national soil geochemical mapping in Ireland
Geochemistry - Exploration, Environment, Analysis (November 2008) 8 (3-4): 255-265

Abstract

Geochemical mapping requires a good understanding of geochemical variables and proper use of mathematical and mapping techniques. In this study, GIS mapping for the geochemical variables in Irish soils was achieved using trans-Gaussian kriging following investigation of probability features, outlier identification, optimal power transformation by the Box-Cox method and spatial structure modelling. Relatively high nugget effect values for the variogram models were observed for most variables. The assumption of spatial autocorrelation was seriously breached by two variables, available P and available K, and spatial interpolation was not performed for these. Two or even three nested theoretical models were needed to model variogram structures for most variables reflecting their variation at different spatial scales. The spatial distribution patterns for most elements illustrated the influences of underlying bedrock and soil type, while some of the heavy metals (e.g. Pb, Zn and Cu) were also affected by mining activities and urban sprawl. The available nutrients (P, K and Mg) appeared to be most affected by agricultural activities.


ISSN: 1467-7873
EISSN: 2041-4943
Serial Title: Geochemistry - Exploration, Environment, Analysis
Serial Volume: 8
Serial Issue: 3-4
Title: Use of trans-Gaussian kriging for national soil geochemical mapping in Ireland
Affiliation: National University of Ireland, Department of Geography, Galway, Ireland
Pages: 255-265
Published: 200811
Text Language: English
Publisher: Geological Society Publishing House, London, United Kingdom
References: 23
Accession Number: 2008-110282
Categories: Geochemistry of rocks, soils, and sediments
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables, sketch maps
N51°30'00" - N55°19'60", W10°30'00" - W06°30'00"
Secondary Affiliation: Teagasc, IRL, IrelandInstitute of Technology of Sligo, IRL, Ireland
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 200840
Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal