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This article in SSSAJ

  1. Vol. 52 No. 4, p. 1086-1090
    Received: June 22, 1987

    * Corresponding author(s):
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Horizontal and Vertical Kriging of Soil Properties Along a Transect in Southern New Mexico

  1. M. H. Nash,
  2. L. A. Daugherty ,
  3. P. J. Wierenga,
  4. S. A. Nance and
  5. A. Gutjahr
  1. Dep. of Agronomy and Horticulture
    Dep. of Experimental Statistics, New Mexico State Univ., Las Cruces, NM 88003-0003
    Mathematic Dep., New Mexico Inst. of Mining and Technology, Socorro, NM 87801



The application of geostatistical analysis to evaluate a soil transect was explored by measuring soil properties in four equal depths (0–0.3, 0.3–0.6, 0.6–0.9, and 0.9–1.2 m), at 30-m intervals along a transect of 1800-m length in southern New Mexico. Semivariograms were computed for clay, sand, coarse fragments, and CaCO3 percent for each depth along the transect. The horizontal semivariograms were combined to form one semivariogram to account for the anisotropy in the measurement procedure. A similar procedure was used for vertical semivariograms to account for the anisotropy in the measurement units. The combination of the equations describing the horizontal and vertical semivariograms was used in a kriging program. The kriging program was used to estimate values of soil properties at 2245 grid points from the 240 original measurements. Two-dimensional, kriged contour maps of clay, sand, coarse fragments, and CaCO3 percent were constructed. It appears the kriging technique has excellent potential in preparation of two-dimensional vertical contour maps of soil properties.

Journal Article 1328, Agric. Exp. Stn., New Mexico State Univ.

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