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Title

Incorporating Electromagnetic Induction Methods into Regional Soil Salinity Survey of Irrigation Districts

AuthorsNogués Navarro, Jesús; Robinson, D. A.; Herrero Isern, Juan CSIC ORCID
Issue DateNov-2006
PublisherSoil Science Society of America
CitationSoil Sci Soc Am J 70:2075-2085 (2006)
AbstractMany land use decisions are made without the aid of soil maps in countries without National soil surveys. The purpose of this research was to create a soil survey delineating salinity phases at a regional scale that could serve as the basis for improved decision making, or highlight areas for further investigation. Soil salinity survey at a regional scale remains a challenge. We demonstrate a survey methodology suited to small fields, often found in Europe and developing countries, and present a streamlined survey methodology making this typically labor-intensive process more efficient. A regional soil survey was conducted at a scale of 1:25 000, mapping consociations and complexes of soil series. The soil survey information was then used to guide an electromagnetic induction (EMI) survey of the soils with observed salinity, to delineate phases. A calibration method for estimating the electrical conductivity of the extract of the saturated paste (ECe) from the EMI measurements was devised. After testing several statistical methods, a single calibration of the EMI data was found to be suitable using a nonparametric regression. The use of the EMI method reduced operation costs, where time, personnel, analysis time, and budget are limitations.
Publisher version (URL)http://soil.scijournals.org/cgi/content/full/70/6/2075
URIhttp://hdl.handle.net/10261/17189
DOI10.2136/sssaj2005.0405
ISSN0361-5995
E-ISSN1435-0661
Appears in Collections:(EEAD) Artículos

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