Knowledge Center Catalog

Theoretical and experimental performance of spatial interpolation methods for soil salinity analysis (Record no. 18907)

MARC details
000 -LEADER
fixed length control field 02489nab a22003377a 4500
001 - CONTROL NUMBER
control field G65460
003 - CONTROL NUMBER IDENTIFIER
control field MX-TxCIM
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20170719110411.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 121211b |||p||p||||||| |z||| |
022 0# - INTERNATIONAL STANDARD SERIAL NUMBER
International Standard Serial Number 0001-2351
040 ## - CATALOGING SOURCE
Original cataloging agency MX-TxCIM
082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER
Classification number 95-163613
100 1# - MAIN ENTRY--PERSONAL NAME
Personal name Hosseini, E.
245 00 - TITLE STATEMENT
Title Theoretical and experimental performance of spatial interpolation methods for soil salinity analysis
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Date of publication, distribution, etc. 1994
340 ## - PHYSICAL MEDIUM
Material base and configuration Printed
500 ## - GENERAL NOTE
General note references US (DNAL 290.9 Am32T)
520 ## - SUMMARY, ETC.
Summary, etc. Interpolation methods are required for analysis of soil salinity data by geographic information systems. This study was conducted to determine interpolation methods that are best suited to map soil salinity. Methods of closest neighbor, kriging, inverse-distance moving average, and thin plate smoothing splines were compared by cross-validation for precision and smoothing, using 341 measured values of electrical conductivity of saturated paste extract in a 16000 ha area in southwest Iran. Interpolation precision of all methods were low, with a mean absolute difference between measured and predicted values ranging from 42 to 76% of the mean measured soil salinity. This was due to the large ratio of nugget effect to the sill of the variogram and to the high variability of data. Thin plate smoothing splines and ordinary kriging were the most precise methods, whereas closest neighbor was the least precise. The smoothing of the methods was assessed by comparing the dispersion standard deviation of interpol ated values with that of observed values. The most precise methods were also those that performed an important smoothing. Ordinary kriging and thin plate smoothing splines produced contour maps that were much easier to interpret. A theoretical analysis of the performance of the methods (precision and smoothing) led to conclusions similar to those based on the cross-validation study. Such a theoretical analysis can be used to select an appropriate interpolation method without the need for time consuming cross-validation
546 ## - LANGUAGE NOTE
Language note English
595 ## - COLLECTION
Collection AGRIS Collection
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Asia
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Chemicophysical properties
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Mathematical and statistical methods
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Middle east
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Soil surveys and mapping
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Southwestern asia
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name Gallichand, J.,
Relator term coaut.
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name Marcotte, D.,
Relator term coaut.
773 0# - HOST ITEM ENTRY
Title Transactions of the ASAE (USA). (Nov-Dec 1994). v. 37(6) p. 1799-1807
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type Article
Holdings
Date last seen Total Checkouts Full call number Price effective from Koha item type Lost status Damaged status Not for loan Collection code Withdrawn status Home library Current library Date acquired
07/19/2017   95-163613 07/19/2017 Article Not Lost     AGRIS Collection   CIMMYT Knowledge Center: John Woolston Library CIMMYT Knowledge Center: John Woolston Library 07/19/2017

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