EVALUATION OF GEOSTATISTICAL METHODS FOR ESTIMATING AND ZONING OF MACRONUTRIENTS IN AGRICULTURAL LANDS OF GOLESTAN PROVINCE

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KAZEMI POSHTMASARI H.; TAHMASEBI SARVESTANI Z.; KAMKAR B.; SHATAEI SH.; SADEGHI S.

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Journal: WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE) Year:2012 | Volume:22 | Issue:1 Page(s): 201-218

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Title

EVALUATION OF GEOSTATISTICAL METHODS FOR ESTIMATING AND ZONING OF MACRONUTRIENTS IN AGRICULTURAL LANDS OF GOLESTAN PROVINCE

Author(s)

Keywords

GEOSTATISTICSQ2

NITROGENQ2

PHOSPHORUSQ2

POTASSIUMQ2

ZONINGQ3

Abstract

In this research, the spatial distribution of N, P and K in agricultural lands of Golestan province were evaluated using different geostatistical methods such as Kriging, Inverse Distance Weighting, Radial Basis Function, Inverse Multiquadric and Local Polynomial. For this porpose, 505 soil samples were collected from fields in 2008 and concentrations of these elements were measured for each sample. The performance criteria for evaluation were Mean Absolute Error, Mean Bias Error and Root Mean Square Error with the Jacknife methods. The results showed that Kriging was the best method for estimating N, P and K. Because, it showed the highest accuracy and the lowest error for estimating of these elements. Local Polynomial (degree3) was also found as the most unsuitable method for estimating of these elements. Semivariograms analysis indicated that N and K were the best fitted by Exponential models, also P by Spherical model. Result of ZONING showed that amounts of N and P were lower in north and east regions of the study lands.

Cites

COMPARISON OF SPATIAL INTERPOLATION METHODS TO MAPP HEAVY METALS CONCENTRATIONS IN SURFACE SOIL OF ARAN-O-BIDGOL CITY

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APA: Copy

KAZEMI POSHTMASARI, H., TAHMASEBI SARVESTANI, Z., KAMKAR, B., SHATAEI, SH., & SADEGHI, S.. (2012). EVALUATION OF GEOSTATISTICAL METHODS FOR ESTIMATING AND ZONING OF MACRONUTRIENTS IN AGRICULTURAL LANDS OF GOLESTAN PROVINCE. WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE), 22(1), 201-218. SID. https://sid.ir/paper/147864/en

Vancouver: Copy

KAZEMI POSHTMASARI H., TAHMASEBI SARVESTANI Z., KAMKAR B., SHATAEI SH., SADEGHI S.. EVALUATION OF GEOSTATISTICAL METHODS FOR ESTIMATING AND ZONING OF MACRONUTRIENTS IN AGRICULTURAL LANDS OF GOLESTAN PROVINCE. WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE)[Internet]. 2012;22(1):201-218. Available from: https://sid.ir/paper/147864/en

IEEE: Copy

H. KAZEMI POSHTMASARI, Z. TAHMASEBI SARVESTANI, B. KAMKAR, SH. SHATAEI, and S. SADEGHI, “EVALUATION OF GEOSTATISTICAL METHODS FOR ESTIMATING AND ZONING OF MACRONUTRIENTS IN AGRICULTURAL LANDS OF GOLESTAN PROVINCE,” WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE), vol. 22, no. 1, pp. 201–218, 2012, [Online]. Available: https://sid.ir/paper/147864/en

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