Aria, P. and Mirkhani, R. (2005). Methods of Soil Physical Analysis, Technical Bulletin, Soil and Water Research Institute, IranNo: 479. (In Persian)
Bhunia, G. S. and Maiti, R. (2016). Spatial variability of soil organic carbon under different land use using radial basis function (RBF). Modeling Earth Systems and Environment, 2(1), 17.
Bijanzadeh, E., Mokarram, M., and Naderi, R. (2015). Applying spatial geostatistical analysis models for evaluating variability of soil properties in eastern Shiraz, Iran. Iran Agricultural Research, 33(2), 35-46.
Corwin, D. L., Lesch, S. M., Oster, J. D., and Kaffka, S. R. (2006). Monitoring management-induced spatio–temporal changes in soil quality through soil sampling directed by apparent electrical conductivity. Geoderma, 131(3), 369-387.
Davatgar, N. and Ghasemi, Sh. (2016). Spatial variability and mapping of some physico-chemical properties in surface soils and Influence of land use management on them in agricultural lands south of Tehran, Iranian Journal of Soil Research, 30(2), 215-226.
Doran, J. W. and Parkin, T. B. (1996). Quantitative indicators of soil quality: a minimum data set. Methods for assessing soil quality/editors, John W. Doran and Alice J. Jones; editor-in-chief SSSA, Jerry M. Bigham; managing editor, David M. Kral; associate editor, Marian K. Viney.
Douaik, A., Meirvenne, V., & Tóth, T. (2011). Statistical Methods for the analysis of soil spatial and temporal variability. Principles, Application and Assessment in Soil Science, London: IntechOpen, 279-308.
Girei, A. H., Abdu, N., and Abdulkadir, A. (2016). Temporal Variability of Soil Physico-chemical Properties under a Long-term Fertilizer Trial at Samaru, Northern Guinea Savanna of Nigeria. International Journal of Plant and Soil Science, 9(6), 1-10.
Hamidi Nehrani, S., Askari, M. S., Saadat, S., Delavar, M. A., Taheri, M., and Holden, N. M. (2020). Quantification of soil quality under semi-arid agriculture in the northwest of Iran. Ecological Indicators, 108, 105770.
Hasanipak, A. (1998). Geostatistics. Tehran University. Press, 314 p.
Horwath, W. R. and Paul, E. A. (1994). Microbial biomass methods of soil analysis. Part 2. Microbiological and Biochemical Properties. Soil Science Society of America Book Series. 5, 753–773.
Jolliffe, I. T. (1986). Principal components in regression analysis. In Principal component analysis (pp. 129-155). Springer, New York, NY.
Journel, A. G., and Huijbregts, C. J. (1978). Mining geostatistics. Academic press.
Juhos, K., Szabó, S. and Ladányi, M. (2015). Influence of soil properties on crop yield: a multivariate statistical approach, International Agrophysics, 29, 433-440.
Karami, A. and Basirat, S. (2015). Geostatistical assessment of spatial variability of some surface soil properties in Arsenjan plain. Iranian Journal of Soil Research, 29(1), 59-69.
Komnitsas, K., Guo, X., and Li, D. (2010). Mapping of soil nutrients in an abandoned Chinese coal mine and waste disposal site. Minerals Engineering, 23(8), 627-635.
Liu, J., Wu, L., Chen, D., Li, M., and Wei, C. (2017). Soil quality assessment of different Camellia oleifera stands in mid-subtropical China. Applied Soil Ecology, 113, 29-35.
Liu, X., Zhao, K., Xu, J., Zhang, M., Si, B., and Wang, F. (2008). Spatial variability of soil organic matter and nutrients in paddy fields at various scales in southeast China. Environmental Geology, 53(5), 1139-1147.
Mirzaee, S., Ghorbani-Dashtaki, S., Mohammadi, J., Asadi, H., and Asadzadeh, F. (2016). Spatial variability of soil organic matter using remote sensing data. Catena, 145, 118-127.
Mohammadi, J. (2006). Pedometer (Spatial Statistics), Published Pelk, Tehran, Iran.
Nabiollahi, K., Taghizadeh-Mehrjardi, R., Kerry, R., and Moradian, S. (2017). Assessment of soil quality indices for salt-affected agricultural land in Kurdistan Province, Iran. Ecological Indicators, 83, 482-494.
Olsen, S. R., Cole, C. V., Watanabe, F. S., & Dean, L. A. (1954). Estimation of available phosphorus in soils by extraction with sodium bicarbonate. USDA Circ. 939. US Gov. Print. Office, Washington, DC. Estimation of available phosphorus in soils by extraction with sodium bicarbonate. USDA Circ. 939. US Gov. Print. Office, Washington, DC.
Page, A. L., Miller, R. H. and Keeney, D. R. (1982). Methods of Soil Analysis, part 2, chemical and microbiological properties. American Society of Agronomy, Inc. Soil Science Society of America. Madison, WI.
Pham. H. (2019). A New Criterion for Model Selection. Mathematics, 7, 1215; doi: 10.3390/math7121215
Qi, Y., Darilek, J. L., Huang, B., Zhao, Y., Sun, W., and Gu, Z. (2009). Evaluating soil quality indices in an agricultural region of Jiangsu Province, China. Geoderma, 149(3), 325-334.
Rabbi, S. M. F., Roy, B. R., Miah, M. M., Amin, M. S., and Khandakar, T. (2014). Spatial variability of physical soil quality index of an agricultural field. Applied and Environmental Soil Science, 2014, 1-10.
Rahmanipour, F., Marzaioli, R., Bahrami, H. A., Fereidouni, Z., and Bandarabadi, S. R. (2014). Assessment of soil quality indices in agricultural lands of Qazvin Province, Iran. Ecological Indicators, 40, 19-26.
Ranjbar, A., Emami, H., Khorasani, R., and Karimi Karoyeh, A. R. (2016). Soil Quality Assessments in Some Iranian Saffron Fields. Journal of Agricultural Science and Technology, 18(3), 865-878.
Risser, P. G. (1991). Long-term ecological research: an international perspective.
Rosemary, F., Indraratne, S. P., Weerasooriya, R., and Mishra, U. (2017). Exploring the spatial variability of soil properties in an Alfisol soil catena. Catena, 150, 53-61.
Sanaeinejad, S. H., Astaraei, A.R., Ghaemi, M., Siabi, N. (2010). An Investigation into spatial data variation by using geostatistics methods for soil studies. The First International Conference on Plant, Water, Soil and Weather Modeling, Chamran University. Kerman, Iran.
Sánchez-Navarro, A., Gil-Vázquez, J. M., Delgado-Iniesta, M. J., Marín-Sanleandro, P., Blanco-Bernardeau, A., and Ortiz-Silla, R. (2015). Establishing an index and identification of limiting parameters for characterizing soil quality in Mediterranean ecosystems. Catena, 131, 35-45.
Schöning, I., Totsche, K. U., and Kögel-Knabner, I. (2006). Small scale spatial variability of organic carbon stocks in litter and solum of a forested Luvisol. Geoderma, 136(3-4), 631-642.
Shahab H., Emami H., Haghnia Gh., and Karimi A. (2011). Determining most Important Properties for Soil Quality Indices of Agriculture and Range Lands in a some Parts of Southern Mashhad. Journal of Water and Soil, 25(5), 1197-1205.
Sun, B., Zhou, S., and Zhao, Q. (2003). Evaluation of spatial and temporal changes of soil quality based on geostatistical analysis in the hill region of subtropical China. Geoderma, 115(1), 85-99.
SYS, C., Van Ranst, E., and Debaveye, J. (1993). Land evaluation. Part III: crop requirements. General Administration for Development cooperation, Agricultural publication, 7, Brussels Belgium 199 pp.
Theodossiou, N., and Latinopoulos, P. (2006). Evaluation and optimisation of groundwater observation networks using the Kriging methodology. Environmental Modelling and Software, 21(7), 991-1000.
Trangmar, B. B., Yost, R. S., and Uehara, G. (1986). Application of geostatistics to spatial studies of soil properties. Advances in agronomy, 38, 45-94
Walkley, A. and Black, I. A. (1934). An examination of Degtjareff method for determining soil organic matter and a proposed modification of the chromic acid titration method. Soil Science, 37, 29-37.
Xin-Zhong, W., Guo-Shun, L., Hong-Chao, H., Zhen-Hai, W., Qing-Hua, L., Xu-Feng, L., and Yan-Tao, L. (2009). Determination of management zones for a tobacco field based on soil fertility. Computers and Electronics in Agriculture, 65(2), 168-175.
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