Database of Polish arable mineral soils: a review

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The database of Polish arable mineral soils is presented. The database includes a lot of information about the basic properties of soils and their dynamic characteristics. It was elaborated for about 1 000 representative profiles of soils in Poland The database concerns: particle size distribution, organic carbon content, acidity-pH, specific surface area, hydrophobicity - solidliquid contact angle, static and dynamic hydrophysical properties, oxidation-reduction properties and selected biological (microbiological) properties of soils. Knowledge about soil characteristics is indispensable for description, interpretation and prediction of the course of physical, chemical and biological processes, and modelling these processes requires representative data. The utility of simulation and prediction models describing phenomena which take place in the soil-plant-atmosphere system greatly depends on the precision of data concerning characteristics of soil. On the basis of this database, maps of chosen soil properties are constructed. The aim of maps is to provide specialists in agriculture, ecology, and environment protection with an opportunity to gain knowledge of soil properties and their spatial and seasonal variability.

Bieganowski A., Chojecki T., Ry¿ak M., Sochan A., andLamorski K., 2013. Methodological aspects of fractal dimension estimation on the basis of particle size distribution. Vadose Zone J., 12, doi:10.2136/vzj2012.0064.

Brogowski Z. and Kwasowski W., 2012. Distribution of organic matter in the particle size fractions of lateritic soil (plinthosol). Soil Sci. Ann., 63(4), 9-15.

Bryk M., 2012. Evaluation of soil aggregate surface roughness by image analysis. Soil Sci. Ann., 63(2), 9-13.

Brzeziñska M., Kuzyakov Y., W³odarczyk T., Stahr K., andStêpniewski W., 1998. Oxidation of methane and dehydrogenase activity in a Mollic Gleysol. Z. Pflanzenernähr. Bodenk., 161, 697-698.

Brzeziñska M.,NosalewiczM., PasztelanM., andW³odarczykT.,2012. Methane production and consumption in loess soil at different slope position. Scientific World J., 1-8.

Brzeziñska M., Rafalski P., W³odarczyk T., Szarlip P., andBrzeziñski K., 2011a. How much oxygen is needed for acetylene to be consumed in soil? J. Soils Sediments, 11, 1142-1154.

Brzeziñska M., Soko³owskaZ., AlekseevaT., Alekseev A.,HajnosM.,and Szarlip P., 2011b. Some characteristics of organic soils irrigated with municipal wastewater. Land Degrad. Dev., 22, 586-595.

Brzeziñska M., W³odarczyk T., and Gliñski J., 2004. Effect of methane on soil dehydrogenase activity. Int. Agrophysics, 18, 213-216.

Całka A., 2009. Hydrofilic-hydrofobic properties of selected soils of Poland (in Polish). Ph.D. Thesis, Institute of Agrophysics PAS, Lublin, Poland.

Carsel R.F. and Parrish R.S., 1988. Developing joint probability distributions of soil water retention characteristics. Water Resour. Res., 24, 755-769.

Długosz J., Orzechowski M., Kobierski M., Smo³czyñski S.,and Zamorski R., 2009. Clay minerals from Weichselian glaciolimnic sediments of the Sepopolska Plain (NE Poland). Geologica Carpathica, 60(3), 263-267.

Dobrowolski R., Bieganowski A., Mroczek P., and Ry¿ak M.,2012. Role of periglacial processes in epikarst morphogenesis: A case study from Che³m Chalk Quarry, Lublin Upland, Eastern Poland. Permafrost Periglac. Process., 23, 251-266.

FAO, 2006. Guidelines for Soil Description. Rome, Italy.

Frąc M., Oszust K., and Lipiec J., 2012. Community level physiological profiles (CLPP), characterization and microbial activity of soil amended with dairy sewage sludge. Sensors, 12, 3253-3268.

Gliński J., Brzeziñska M., W³odarczyk T., and Szarlip P., 2010. Respiration in Soil: Conditions and Effects. Polish Academy of Sciences Press, Branch in Lublin, Lublin, Poland.

Gliński J. and Ostrowski J., 2011. Mapping of of soil physical properties In: Encyclopedia of Agrophysics. (Eds J.Gliñski, J.Horabik, J. Lipiec). Springer Press,Dordrecht- Heidelberg- London-New York.

Gliński J., Ostrowski J., Stêpniewska Z., and Stêpniewski W.,1991. Soil samples bank representing mineral soils of Poland (in Polish). Problemy Agrofizyki, 66, 5-57.

Gliński J. and Stêpniewska Z., 1986. An evaluation of soil resistance to reduction processes. Polish J. Soil Sci., 19, 15-19.

Gliński J., Stêpniewska Z., Stêpniewski W., and Banach A.,2012. Oxydation-Reduction (Redox) Properties of Soils. Polish Academy of Sciences Press, Branch in Lublin, Lublin, Poland.

Gliński J., Stêpniewska Z, Stêpniewski W., Ostrowski J., andSzmagara A., 2000. A contribution to the assessment of potential denitrification in arable mineral soils of Poland. J. Water Land Devel., 4, 175-183.

Gliński J. and Stêpniewski W., 1985. Soil aeration and its role for plants. CRC Press, Boca Raton, FL, USA.

Grangeon T.,LegoutC., EstevesM., GratiotN., andNavratilO.,2012. Variability of the particle size of suspended sediment during highly concentrated flood events in a small mountainous catchment. J. Soils Sediments, 12(10), 1549-1558.

Gunal H., Ersahin S., Uz B.Y., Budak M., and Acir N., 2011. Soil particle size distribution and solid fractal dimension as influenced by pretreatments. J. Agric. Sci., 17, 217-229.

Hajdók I., Tóth J., Földényi R., Tolner L., and Czinkota I.,2012. Comparison of laser diffraction and sedimentation soil particle size analysis methods. Proc. Conf. EUROSOIL, July 2-6, Bari, Italy.

ISO 11277: 2009. Soil quality - Determination of particle size distribution in mineral soil material. Method by sieving and sedimentation. ISO, Geneva, Switzerland.

ISO 13320: 2009. Particle size analysis - Laser diffraction methods. ISO, Geneva, Switzerland.

Jadczyszyn J. and NiedŸwiecki J., 2005. Relation of saturated hydraulic conductivity to soil losses. Polish J. Environ. Stud., 14(4), 431-435.

JózefaciukG., Toth T., and Szendrei G., 2006. Surface and micropore properties of saline soil profiles. Geoderma, 135, 1-15.

Kabala C. and Zapart J., 2012. Initial soil development and carbon accumulation on moraines of the rapidly retreating WerenskioldGlacier, SWSpitsbergen, Svalbard archipelago. Geoderma, 175-176, 9-20.

Koper J. and Brzeziñska M., 2011. Biochemical Responses to Soil Management Practices. In: Encyclopedia of Agrophysics (Eds J.Gliñski, J.Horabik, J.Lipiec). Springer Press, Dordrecht- Heidelberg-London-New York.

Lamorski K., Pachepsky Y., and S³awiñski C., 2008. Using Support Vector Machines to develop pedotransfer functions for water retention of soils in Poland. Soil Sci. Soc. Am. J., 430, 72(5), 1243-1247.

Lamorski K., Pregowski P., Świderski W., Szabra D.,Walczak R.T.,and Usowicz B., 2002. Thermal signatures of land mines buried in mineral and organic soils - modelling and experiments. Infrared Physics Technol., 43(3-5), 303-309.

Lamorski K., Prêgowski P., Świderski W., Usowicz B., andWalczak R., 2001. The comparison of thermal signatures of a mine buried in mineral and organic soils. Proc. SPIE, 4394, 1325-1334 .

Leenhardt D., Voltz M., Bornand M., and Webster R., 2006. Evaluating soil maps for prediction of soil water properties. Eur. J. Soil Sci., 45, 293-301.

Makó A. and Elek B., 2006. Measuring the fluid conductivities of soil in multiphase system. Cereal Res. Comm., 34, 239-242.

Mocek A., Spychalski W., Dobek A., and Mocek-P³óciniak A.,2012. Comparison of three methods of copper speciation in chemically contaminated soils. Polish J. Environ. Stud., 21(1), 159-164.

Molinaroli E., De Falco G., Matteucci G., and Guerzoni S.,2011. Sedimentation and time-of transition techniques for measuring grain-size distributions in lagoonal flats: comparability of results. Sedimentology, 58, 1407-1413.

Nemes A., 2011. Databases of soil physical and hydraulic properties. In: Encyclopedia of Agrophysics. (Eds J. Gliñski, J. Horabik, J. Lipiec). Springer Press, Dordrecht- Heidelberg-London-New York.

Nosalewicz A. and Nosalewicz M., 2011. Effect of soil compaction on dehydrogenase activity in bulk soil and rhizosphere. Int. Agrophys., 25, 47-51.

Ostrowski J., 2012. Selected problems of soil cartography in Poland. Woda-Środowisko-Obszary Wiejskie, Rozprawy Naukowe i Monografie, 33, Falenty, Poland.

Ostrowski J., Stêpniewska Z., Stêpniewski W., and Gliñski J. 1998. Computer maps of the redox properties of arable soils in Poland. Water Land Develop., 2, 19-29.

PN-Z-19010-1, 1997. Soil quality. Determination of the specific surface area of soils by water sorption (BET) (in Polish).

PTGleb., 2008. Particle size distribution and textural classes of soils and mineral materials - classification of Polish Society of Soil Sciences (in Polish). Soil Sci. Ann., 60(2), 5-16.

Rathossi C.E., Lampropoulou P.G., SkourlisK.C., and KatagasC.G., 2012. Mineralogy and microfabrics of clay-bearing sediments of NE Peloponese (Greece): indices for physical behaviour in civil engineering works. Clay Minerals, 47, 259-274.

Ryżak M. and Bieganowski A., 2010. Determination of particle size distribution of soil using laser diffraction - comparison with areometric method. Int. Agrophys., 24, 177-181.

Ryżak M. and Bieganowski A., 2011. Methodological aspects of determining soil particle-size distribution using the laserdiffraction method. J. Plant Nutr. Soil Sci., 174(4), 624-633.

Santra P., Chopra U. K., and Chakraborty D., 2008. Spatial variability of soil pro-perties and its application in predicting surface map of hydraulic parameters in an agricultural farm. Current Sci., 95, 937-945.

Schjønning P., de Jonge L.W., Munkholm L.J., Moldrup P.,Christensen B.T., and Olesen J.E., 2012. Clay dispersibility and soil friability-testing the soil clay-to-carbon saturation concept. Vadose Zone J., 11, doi:10.2136/vzj2011. 0067.

Skierucha W., Wilczek A., Szyp³owska A., S³awiñski C., andLamorski K., 2012.ATDR-based soil moisture monitoring system with simultaneous measurement of soil temperature and electrical conductivity. Sensors, 12, 13545-13566.

Skierucha W., Wilczek A., and Walczak R.T., 2006. Recent software improvements In moisture (TDR method), matric pressure, electrical conductivity and temperature meters of porous media. Int. Agrophysics, 20, 229-235.

Sławiñski C., 2003. Influence of soil solid phase on values of hydraulic conductivity coefficient (in Polish). Acta Agrophysica, 90, 5-75.

Sławiñski C., Walczak R., and Witkowska-Walczak B., 2000a. Hydraulic conductivity coefficients of Polish Rendzinas (in Polish). Acta Agrophysica, 38, 259-266.

Sławiñski C., Walczak R., and Witkowska-Walczak B., 2000b. Hydraulic conductivity coefficients of Polish Eutric and Distric Fluvisols (in Polish). Acta Agrophysica, 38, 281-288.

Sochan A., Bieganowski A., Ry¿ak M., Dobrowolski R., andBartmiñski P., 2012. Comparison of soil texture determined by two dispersion units of Mastersizer 2000. Int. Agrophys., 26, 99-102.

Sokołowska Z., 1989. The role of heterogeneity in adsorption processes on soils (in Polish). Problemy Agrofizyki 58, 5-64.

Sokołowska Z., 2011. Surface area of soils and plants. Encyclopedia of Agrophysics. (Eds J. Gliñski, J. Horabik, J. Lipiec). Springer Press, Dordrecht- Heidelberg-London-New York.

Sokołowska Z., Borówko M., Reszko-Zygmunt J., andSoko³owski S., 2002. Adsorption of nitrogen and water vapor by alluvial soils. Geoderma, 107, 33-54.

Sokołowska Z., Hajnos M., and D¹bek-Szreniawska M., 1999. Relation between adsorption of water vapour, specific surface area and soil cultivation. Polish J. Soil Sci., 32, 3-12.

Sokołowska Z., Józefaciuk G., Soko³owski S., and Urumova-Peszeva A., 1993. Adsorption of water vapour n soils: The influence of organic matter and the components of iron and aluminum on energetic heterogeneity of soil samples. Clays and Clay Minerals, 41, (3), 346-352.

Sokołowska Z., Matyka-Sarzyñska D., and Bowanko G., 2004. Specific surface area of Lublin Polesie mucks determined from water vapour and nitrogen adsorption data. Int. Agrophysics, 18, 363-368.

Sokołowska Z., Sokołowski S., and Warchulska P., 2009. Trends in soil fractal parameters caused by accumulation of soil organic matter as resulting from the analysis of water vapor adsorption isotherms. Ecol. Compl., 6, 254-262.

Sokołowski S., Sokołowska Z., and Usowicz B., 2012. Spatial variability of specific surface area of arable soils in Poland. Geophys. Res. Abstract., EGU2012-8143, April 22-27,Vienna, Austria.

Stawiñski J., Gliñski J., Ostrowski J., Stêpniewska Z., Soko³owskaZ., Bowanko G., Józefaciuk G., Ksiê¿opolska A., andMatyka-Sarzyñska D., 2000. Spatial characterization of specific surface areas of arable soils in Poland (in Polish). Acta Agrophysica, 33, 1-52.

Stępniewska Z., 1988. Redox properties of mineral soils of Poland (in Polish). Problemy Agrofizyki, 56.

Stępniewska Z., 1994. Soil redox resistance as a factor of nitrate stability in the soil. In: Migration and Fate Pollutants in Soils and Subsoils. Theory and Practice. CNR, Quaderni, 96, 9.1-9.7.

Stępniewska Z., 2011. Oxidation-reduction reactions in the environment. In: Encyclopedia of Agrophysics (Eds J. Gliñski, J. Horabik, J. Lipiec). Springer Press, Dordrecht- Heidelberg-London-New York.

Stępniewska Z., Ostrowski J., Stêpniewski W., and Gliñski J.,2004. Classification on redox resistance evaluation of Polish arable soils and their spacial characterization (in Polish). Woda-OErodowisko-Obszary Wiejskie, 4, 125-133.

Stępniewska Z., Stepniewski W., Gliñski J., and Ostrowski J.,1997. Atlas of the redox properties of arable soils in Poland. Lublin-Falenty.

Stępniewska Z., Stêpniewski W., Gliñski J., and Ostrowski J.,1996-1997. Atlas of the Redox Properties of Arable Soils in Poland. IA PAS-IMUZ Press, Lublin-Falenty, Poland.

Stêpniewska Z., Stêpniewski W., Gliñski J., and Ostrowski J.,1996. Redox resistance as a feature determining fate and transport of pollutants in soils using the example of mineral soils of Poland. Chem. Prot. Environ., 2, 52, 345-350.

Szarlip P., W³odarczyk T., Brzeziñska M., and Gliñski J., 2010. Production and uptake of nitrous oxide (N2O) as affected by soil conditions. Acta Agrophysica, 187, 5-66.

Taylor J.A. and Minasny B., 2006. A protocol for converting qualitative point soil pit survey data into continuous soil property maps. Australian J. Soil Res., 44(5), 543-550.

Thomasson A.J., 1995. Assessment of soil water reserves available for plants (SWAP): a review. In: European land information systems for agro-environmental monitoring (Eds D. King, R.J. Jones, A. Thomasson). Institute for Remote Sensing Applictions. Joint Research Centre. Office for Official Publications of the European Community, Luxembourg.

Toth B., Mako A., Rajkai K., and Marth P., 2006. Study the estimation possibilities of soil hydraulic conductivity. Cereal Res. Comm., 34(1), 327-330.

Tramontini S., van Leeuwen C., Domec J.C., Destrac-IrvineA., Basteau C., Vitali M., Mosbach-Schulz O., andLovisolo C., 2012. Impact of soil texture and water availability on the hydraulic control of plant and grape-berry development. Plant Soil. DOI 10.1007/s11104-012-1507-x.

USDA, 2010. Keys to Soil Taxonomy. US Dept. Agriculture, Natural Res. Cons. Serv., Washington, DC, USA.

Usowicz B., Lipiec J., 2009. Spatial distribution of soil penetration resistance as affected by soil compaction: The fractal approach. Ecol. Complex., 6, 263-271.

Usowicz B., Lipiec J., and Usowicz J.B., 2008. Thermal conductivity in relation to porosity and hardness to terrestrial porous media. Planet. Space Sci., 56, 438-447.

Várallyay G., 1989. Mapping of hydrophysical properties and moisture regime of soils. Agrokémia és Talajtan, 38, 800-817.

Várallyay G., 1994. Soil database, soil mapping, soil information and soil monitoring systems in Hungary, Proc. FAO-ECE Int. Workshop on Harmonization of Soil Conservation Monitoring System. September 14-17. Budapest, Hungary.

Vendelboe A.L., Moldrup P., Schjønning P., Oyedele D.J., JinY., Scow K.M., and de Jonge L.W., 2012. Colloid release from soil aggregates: application of laser diffraction. Vadose Zone J., 11. doi:10.2136/vzj2011.0070.

Wagner B.,Tarnawski V.R.,HenningsV., MullerU., WessolekG.,and Plagge R., 2001. Evaluation of pedo-transfer functions for unsaturated soil hydraulic conductivity using independent data set. Geoderma, 102, 275-297.

Walczak R.,Ostrowski J.,Witkowska-Walczak B., and S³awiñskiC., 2002a. Spatial characteristic of hydro-physical properties in arable mineral soils in Poland as illustrated by field water capacity (FWC). Int. Agrophysics, 16, 151-159.

Walczak R.,Ostrowski J.,Witkowska-Walczak B., and S³awiñskiC., 2002b. Spatial characteristics of potentially useful retention in Polish arable soils. Int. Agrophysics, 16, 231-238.

Walczak R.,Ostrowski J.,Witkowska-Walczak B., and S³awiñskiC., 2002c. Spatial characteristics of water conductivity in surface level of Polish arable soils. Int. Agrophysics, 16, 239-2347.

Walczak R., Ostrowski J., Witkowska-Walczak B., andS³awiñskiC., 2002d.Hydrophysical characteristics of Polish arable mineral soils (in Polish). Acta Agrophysica, 79, 1-98.

Walczak R., S³awiñski C., and Witkowska-Walczak B., 1999. Methodical aspects of database creating for water characteristics of Polish arable soils (in Polish). Acta Agrophysica, 22, 245-252.

Walczak R., S³awiñski C., and Witkowska-Walczak B., 2001. Water retention and hydraulic conductivity coefficients of Polish Terric Histosols (in Polish). Acta Agrophysica, 53, 201-209.

Walczak R., Witkowska-Walczak B., and S³awiñski C., 2001a. Water retention and hydraulic conductivity coefficients of Polish Mollic Gleysols (in Polish). Acta Agrophysica, 53, 211-223.

Walczak R., Witkowska-Walczak B., and S³awiñski C., 2001b. Hydrophysical characteristics of Polish Haplic Luvisols and Eutric Cambisols derived from skeleton loam, loam, silt and clay (in Polish). Acta Agrophysica, 57, 159-168.

Walczak R.T., S³awiñski C., and Witkowska-Walczak B., 2004a. Determination of water characteristics of Polish mineral soils with TDR method application. In: Physics, Chemistry and Biogeochemistry in Soil and Plant Studies. IA PAS Press, Lublin, Poland.

Walczak R.T., S³awiñski C., and Witkowska-Walczak B., 2004b. Hydrophysical characteristics of porous body as input data for water transport models. In: Soil-Plant-Atmosphere Aeration and Environmental Problems. IA PAS Press, Lublin-Stuttgart, Poland-Germany.

Walkiewicz A., Bulak P., Brzeziñska M., W³odarczyk T., andPolakowski C., 2012. Kinetics of methane oxidation in selected mineral soils. Int. Agrophys., 26, 401-406.

Waroszewski J., Kalinski K., Malkiewicz M., Mazurek R.,Kozlowski G., and Kabala C., 2013. Pleistocene-Holocene cover-beds on granite regolith as parentmaterial for Podzols. Anexample from the SudetenMountains.Catena, 104, 161-173.

Wei Shangguana, Yongjiu Daia, Baoyuan Liub, Aizhong Yea,and HuaYuana, 2012. A soil particle-size distribution dataset for regional land and climate modelling in China. Geoderma, 171-172, 85-91.

Williams R.D., Ahuja L.R., and Naney J.W., 1992. Comparisons of methods to estimate soil water characteristics from soil partcle size distribution, bulk density and limited data. Soil Sci., 153, 172-184.

Witek T., 1974. An agricultural productive space in numbers (in Polish). Institute of Soil Science and Plant Cultivation Press, Pu³awy, Poland.

Witkowska-Walczak B., Gliñski J., and S³awiñski C., 2012. Hydrophysical Properties of Soils. Polish Academy of Sciences Press, Branch in Lublin, Poland.

Witkowska-Walczak B., Niewczas J., and Ostrowski J., 2004. Estimation of possibility for field water capacity parametrization of chosen soil groups from OEwietokrzyskie voiwodship and Poland (in Polish).ActaAgrophysica, 112, 823-832.

Witkowska-Walczak B., Walczak R., and Ostrowski J., 2003. Pore size distribution and water available for plants in Polish arable soils. Int. Agrophysics, 17, 213-218.

Witkowska-Walczak B., Walczak R., and S³awiñski C., 1999. Water content-soil water potential characteristics of Polish Haplic Phaeozems (in Polish).ActaAgrophysica, 22, 265-273.

Witkowska-Walczak B., Walczak R., and S³awiñski C., 2000a. Water retention of Polish Rendzinas (in Polish). Acta Agrophysica, 38, 247-258.

Witkowska-Walczak B., Walczak R., and S³awiñski C., 2000b. Water retention of Polish Eutric and Distric Fluvisols (in Polish). Acta Agrophysica, 38, 267-280.

Włodarczyk T., and Witkowska-Walczak B., 2006. Water-air characteristics of Terric Histosols. Polish J. Soil Sci., 39, 1-10.

Włodarczyk T., Stêpniewski W., and Brzeziñska M., 2002a. Dehydrogenase activity, redox potential, and emission of carbon dioxide and nitrous oxide from Cambisols under flooding conditions. Biol. Fert. Soils, 36, 200-206.

Włodarczyk T., StêpniewskiW., BrzeziñskaM., and Kotowska U.,2002b.N2Oemission and sorption in relation to soil dehydrogenase activity and redox potential. Int. Agrophysics, 16, 249-252.

Włodarczyk T., Stêpniewski W., and Brzeziñska M., 2005. Nitrous oxide production and consumption in Calcaric Regosoils as related to soil redox and texture. Int. Agrophysics, 19, 263-271.

Włodarczyk T., StêpniewskiW., BrzeziñskaM., andMajewska U.,2011. Various textured soil as nitrous oxide emitter and consumer. Int. Agrophys., 25, 287-297.

Włodarczyk T., Stêpniewski W., Brzeziñska M., and StêpniewskaZ., 2004. Nitrate stability in loess soils under anaerobic conditions-laboratory. J. Plant Nutr. Soil Sci., 167, 693-700.

Wolińska A., Stêpniewska Z., Szafranek-Nakonieczna A., 2011. Effect of selected physical parameters on respiration activities in common Polish mineral soils. Polish J. Environ. Stud., 20, 1075-1082.

Wosten J.H.M., 2000. The HYPRES database of hydraulic properties of European soils. Adv. GeoEcol., 32, 135-143.

Wosten J.H.M., Lilly A., Nemes A., and Le Bas C., 1998. Using existing soil data to derive water parameters for simu-lation models in environmental studies and in land use. Winand Staring Center for Integrated Land, Soil and Water Research, Wageningen, the Netherlands, Report, 156, 7-106.

Wosten J.H.M., Lilly A., Nemes A., and Le Bas C., 1999. Development and use of a database of hydraulic properties of European soils. Geoderma, 90, 169-185.

WRB, 2006. World Resources Base. FAO, Rome, Italy.

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