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• Akbaş, F. ve A. Durak. 2006. Entisol ordusuna ait bir arazide bazı toprak özelliklerinin değişiminin belirlenmesi. Selçuk Üniversitesi Ziraat Fakültesi Dergisi, 20 (39): 43-52.
• Allison, L.E. and C.D. Moodie. 1965. Carbonate. In: Methods of Soil Analysis, Part II (Eds: C.A. Black et al.). American Society of Agronomy Inc., No: 9, Madison, Wisconsin, 1379-1400.
• Atatanır, L. ve M. Yüksel. 2003. Ankara üniversitesi ziraat fakültesi ayaş araştırma ve uygulama çiftliği topraklarının detaylı toprak etüd ve haritalaması. Gaziosmanpaşa Üniversitesi Ziraat Fakültesi Dergisi, 20(1); 157-164.
• Bouyoucous, G.J. 1951. A Recalibration of hydrometer method for making mechanical analysis of soils. Agronomy Journal, 43(9), 434-438.
• Brejda, J.J., T.B. Moorman, J.L. Smith, D.L. Karlen, D.L. Allan and T.H. Dao. 2000. Distribution and variability of surface soil properties at a regional scale. Soil Science Society American of Journal, 64: 974-982.
• Cambardella, C.A., T.B. Moorman, J.M. Novak, T.B. Parkin, D.L. Karlen, R.F. Turco and A.E. Konopka. 1994. Field-scale variability soil properties in Central Iowa soils. Soil Science Society American of Journal, 58: 1501-1511.
• Carroll, Z.L. and M.A. Oliver. 2005. Exploring the spatial relations between soil physical properties and apparent electrical conductivity. Geoderma, 28: 354-374.
• Edmonds, W.J. and M. Lentner, 1987. Soil series differentiae selected by discriminate analysis based on ranks. Soil Science Society American of Journal, 51: 716-721.
• Edmonds, W.J., D.D. Rector, N.O. Wilson and T.L. Arnold. 1988. Evaluation of relationship between oak site ındices and properties of selected dystrochrepts Soil Science Society American of Journal, 52:204-209.
• Erşahin, S. 1999. Aluviyal bir tarlada bazı fiziksel ve kimyasal toprak özelliklerinin uzaysal (spatial) değişkenliğinin belirlenmesi. Selçuk Üniversitesi Ziraat Fakültesi Dergisi, 13(19); 34-41.
• Flatman, G.T. and A.A. Yfantis. 1984. Geostatistical strategy for soil sampling-the survey and the census. Environmental Monitoring and Assessment, 4: 335-349.
• Frogbrook, Z.L. 2000. Geostatistics as an aid to soil management for precision agriculture. Unpublished PhD thesis, The University of Reading, Reading, UK.
• Frogbrook, Z.L. and M.A. Oliver, 2000. The effects of sampling on the accuracy of predictions of soil properties in precision agriculture. Accuracy 2000 Proceedings of the Fourth International Symposium on Spatial Accuracy Assessment in Natural Resources and Environmental Sciences, Amsterdam July 2000, Delft University Press, The Netherlands, pp. 225-232.
• Goovaerts, P. 1998. Geostatistical tools for characterizing the spatial variability of microbiological and physico-chemical soil properties. Biology and Fertility of Soils, 27: 315-334.
• Hendershot, W.H., H. Lalande, and M. Duquette. 1993. Soil reaction and exchangeable acidity. In Soil Sampling and Methods of Analysis (Eds: M.R.Carter), Canadian Society of Soil Science.
• Iqbal, J., J.A. Thomasson, J.N. Jenkins, P.R. Owens and F.D. Whisler. 2005. Spatial variability analysis of soil physical properties of alluvial soils. Soil Science Society of America Journal, Vol. 69, No: 4, 1338.doi:10.2136/sssaj2004.0154.
• Jackson, M.L. 1958. Soil Chemical Analysis. Prentice Hall Inc., Englewood Cliffs, N.J.
• Journel, A.G. and C.H.J. Huijbregts, 1978. Mining Geostatistics. Academic Press, London, pages 600.
• Mulla, D.J. and A.B. McBratney. 2000. Soil Spatial Variability. In: Handbook of Soil Science (Ed. in chief: Malcom E. Summer), CRS Press, A-321-A-351.
• Parkin, T.B. and J.A. Robinson. 1992. Analysis of lognormal data. Advances Soil Science, 20: 193-235.
• Parkin, T.B. and J.A. Robinson. 1994. Statistical Treatment of Microbial Data. Methods of Soil Analysis (Eds: R.W. Weaver et al.), Part 2, Soil Science Society American of Journal Book Series, No: 5, Madison, WI.
• Parkin, T.B., J.J. Meisinger, S.T. Chester, J.L. Starr and J.A. Robinson. 1988. Evaluating of statistical methods for lognormally distributed variables. Soil Science Society American of Journal, 52: 323-329.
• Rhoades, J.D. 1986. Soluble Salts. In Methods of Soil Analysis, Part II, Chemical and Microbiological Properties. 2th ed. (Ed: A. Klute), American Society of Agronomy and Soil Science Society American of Journal Agronomy Monograph, No: 9, Madison, WI., pp: 167-179.
• Starr, J.L., T.B. Parkin and J.J. Meisinger. 1992. Sample size consideration in the determination of soil nitrate. Soil Science Society American of Journal, 56: 1824-1830.
• Starr, J.L., T.B. Parkin and J.J. Meisinger. 1995. Influence of sample size on chemical and physical soil measurement. Soil Science Society American of Journal, 56: 1824-1830.
• Taşkın, C. 1974. Ayaş (Ankara) civarındaki tuğla-kiremit, toz kireç ve alçı taşı (jips) zuhurlarında endüstriyel hammadde imkanları bakımından yapılan araştırma raporu. Maden Tetkik Arama Enstitüsü Genel Müdürlüğü, Ankara.
• Trangmar, B.B., R.S. Yost and G. Uehara. 1985. Application of geostatistics to spatial studies of soil properties. Advances Agronomy, 38: 45-94.
• Warrick, A.W., D.E. Myers, and D.R. Nielsen. 1986. Geostatistical Methods Applied To Soil Science. In: Methods of Soil Analysis, Part I, Physical And Mineralogical Methods. 2th ed. Agronomy Monograph, No: 9, pp: 53-82.
• Wilding, L.P., J. Bouma, and D.W. Goss. 1994. Impact of Spatial Variability on Interpretative Modelling In: Quantitative Modelling of Soil Forming Processes (Eds: R.B. Bryant and R.W. Arnold) Soil Science Society of American Special Publication Number 39, Soil Science Society of American Inc., Madison Wisconsin,USA.
• Yılmaz, M. 1993. Ayaş ve yakın çevresinin fiziki coğrafyası. Lisans tezi, Ankara Üniversitesi Dil Tarih ve Coğrafya Fakültesi Fiziki Coğrafya Anabilim Dalı, Ankara, 30 s.
• Young, F.J., R.D. Hammer and D. Larsen. 1999. Frequency distribution of soil properties on a loess-mantled Mussouri Watershed. Soil Science Society American of Journal, 63: 178- 185.