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M. Kobal, M. Urbančič, N. Potočić, B. De Vos, P. Simončič: PEDOTRANSFER FUNCTIONS FOR BULK DENSITY ... Šumarski list br. 1–2, CXXXV (2011), 19-27 5.ACKNOWLEDGMENTS – Zahvala The study was financed by the Ministry of Higher Education, Science and Technology, through the research programme P4–0107 and young researcher programme, BioSoil Module Soil (2006-2008) within Forest Focus programme, national CRP project V2-0511. Special thanks to Damijana Kastelec for methodological improvement. 6. REFERENCES – Literatura Adams,W.A., 1973. Effect of Organic-Matter on Bulk andTrue Densities of Some Uncultivated Podzo lic Soils. Journal of Soil Science 24, 10–17. UN/ECE ICP-Forests2006.Annex 1, Methods for Soil Analysis. ICPForests, IIIa Sampling andAnalysis of Soil – update 2006. http://www.icp-forests. org/pdf/Chapt_3a_2006(2).pdf. Benites,V.M., P.L. O.A.Machado, E. C. C.Fidalgo, M. R.Coelho, B. E.Madari,2007. Pedotransfer functions for estimating soil bulk density from existing soil survey reports in Brazil. Geoderma 139, 90–97. Boucneau,G., M. Van Meirvenne and G.Hofman, 1998. Comparing pedotransfer functions to estimate soil bulk density in northern Belgium. PedologieThemata 5:67–70. Craft, C.B., E. D.Seneca, S.W.Broome,1991. Loss on Ignition and Kjeldahl Digestion for Estimating Organic-Carbon and Total Nitrogen in Estuarine Marsh Soils – Calibration with Dry Com bustion. Estuaries 14, 175–179. DeVos, B., M. VanMeirvenne,P.Quataert, J. Deckers, B.Muys,2005. Predictive quality of pedotransfer functions for estimating bulk density of forest soils. Soil Science Society of America Journal 69, 500–510. th FAO. 2006. Guidelines for soil description. 4 edition. FAO, Rome. Federer, C. A., D. E. Turcotte, C. T. Smith, 1993.The Organic Fraction – Bulk-Density Relationship and the Expression of Nutrient Content in Forest Soils. Canadian Journal of Forest Research 23, 1026–1032. Harrison,A.F., K. L.Bocock,1981. Estimation of Soil Bulk-Density from Loss-On-Ignition Values. Journal ofApplied Ecology 18, 919–927. Heuscher, S.A., C. C. Brandt, P. M. Jardine, 2005. Using soil physical and chemical properties to estimate bulk density. Soil Science Society ofAmerica Journal 69, 51–56. Hoekstra C, Poelman JNB (1982) Density of soils measured at the most common soil types in the Ne therlands (in Dutch). Report 1582, Soil Survey Institute,Wageningen, The Netherlands, 47 pp. Honeysett, J.L., D.A.Ratkowsky,1989. TheUse of Ignition Loss to Estimate Bulk-Density of Forest Soils. Journal of Soil Science 40, 299–308. Jeffrey, D.W.,1970.ANote on Use of Ignition Loss asAMeans forApproximate Estimation of Soil Bulk Density. Journal of Ecology 58, 297–&. Kaur,R., S.Kumar, H.P.Gurung,2002. Apedotransfer function (PTF) for estimating soil bulk density from basic soil data and its comparison with existing PTFs. Australian Journal of Soil Research 40, 847–857. Landa, E.R., J. R.Nimmo,2003.The life and scientific contributions of Lyman J. Briggs. Soil Science Society ofAmerica Journal 67, 681–693. Leonavičiute, N.,2000. Predicting soil bulk and particle densities by soils pedotransfer functions from existing soil data in Lithuania. Geografijos metrastis 33:317–330. Martin, M.P., D.Lo Seen, L.Boulonne, C.Jolivet, K. M. Nair, G. Bourgeon, D. Arrouays, 2009. Optimizing Pedotransfer Functions for Estimating Soil Bulk Density Using Boosted Regression Trees. Soil Science Society ofAmerica Journal 73, 485–493. Muggeo,V.M.R., 2008. Segmented: an R package to fit regression models with broken-line relationships. Rnews 8/1, 20–25. Phillips, J.D., D.A. Marion, 2005. Biomechanical effects, lithological variations, and local pedodiversity in some forest soils of Arkansas. Geoderma 124, 73–89. R Development CoreTeam (2009). R: Alanguage and environment for statistical computing, reference index version 2.9.1. R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-90005107- 0, URL http://www.R-project.org. Rawls,W.J., and D. L.Brakensiek,1985. Prediction of soil water properties for hydrologic modelling. p. 293–299. In E. Jones and T.J. Ward (ed.) Watershed Management in the Eighties. Proc. of a Symp.ASCE, Denver, CO. 30 Apr.– 2 May 1985.ASCE, NewYork. Reinds, GJ, M. Posch, W. De Vries, (2001) A semi-empirical dynamic soil acidification model for use in spatially explicit integrated assessment models for Europe.Alterra Report 084,Alterra |