[BLASER P., WALTHERT L., GRAF PANNATIER E. 2008. The sensitivity of Swiss forest soils to acidification and the risk of aluminum toxicity. Journal of Plant Nutrition and Soil Science 171: 605-612.10.1002/jpln.200700185]Search in Google Scholar
[COLLIGNON Ch., CALVARUSO Ch., TURPAULT M-P. 2011. Temporal dynamics of exchangeable K, Ca and Mg in acidic bulk soil and rhizosphere under Norway spruce (Picea abies Karst.) and beech (Fagus sylvatica L.) stands. Plant and Soil 349: 355-366.]Search in Google Scholar
[CRONAN Ch.S, GRIGAL D.F. 1995. Use of calcium/aluminum ratios as indicators of stress in forest ecosystems. Journal of Environmental Quality 24: 209-226.10.2134/jeq1995.00472425002400020002x]Search in Google Scholar
[FARR C., SKOUSEN J., EDWARDS P., CONNOLLY S., SENCINDIVER J. 2009. Acid soil indicators in forest soils of the Cherry River Watershed, West Virginia. Environmental Monitoring and Assessment 158: 343-353.]Search in Google Scholar
[GRAF PANNATIER E., WALTHERT L., BLASER P. 2004. Solution chemistry in acid forest soils: Are the BC:Al ratios as critical as expected in Switzerland? Journal of Plant Nutrition and Soil Science 167: 160-168.10.1002/jpln.200321281]Search in Google Scholar
[GRAND S., LAVKULICH L.M. 2013. Potential influence of poorly crystalline minerals on soil chemistry in Podzols of southwestern Canada. European Journal of Soil Science 64: 651-660.10.1111/ejss.12062]Search in Google Scholar
[LINDROOS A-J., BRÜGGER T., DEROME J., DEROME K. 2003. The weathering of mineral soil by natural soil solutions. Water, Air, and Soil Pollution 149: 269-279.]Search in Google Scholar
[MATSCHONAT G., VOGT R. 1998. Significance of the total cation concentration in acid forest soils for the solution composition and the saturation of exchange sites. Geoderma 84: 289-307.10.1016/S0016-7061(98)00009-3]Search in Google Scholar
[MELLERT K.H., EWALD J. 2014. Nutrient limitation and site-related growth potential of Norway spruce (Picea abies [L.] Karst) in the Bavarian Alps. Eur. J. Forest Res. 133: 433-451.10.1007/s10342-013-0775-1]Search in Google Scholar
[OSTROWSKA A. 1985. Effect of nutrition conditions on ionic proportions in plants on the examine of common pine (Pinus silvestris L). Skierniewice (Second Degree Dissertation). (In Polish)]Search in Google Scholar
[OSTROWSKA A., PORĘBSKA G. 2002. Mineral composition of plants, interpretation and use in environmental protection. Monograph. IOŚ Warszawa, 165 p. [in Polish].]Search in Google Scholar
[OSTROWSKA A., PORĘBSKA G., SIENKIEWICZ J., BORZYSZKOWSKI J., KRÓL H. 2006. Soil and vegetation properties in the monitoring of forest environment. Monograph. IOŚ Warszawa, 159 p. [in Polish].]Search in Google Scholar
[OSTROWSKA A., PORĘBSKA G., GAWLIŃSKI S. 2008. Relations between the field of pine and Ca/Al ratio in the growth environment and plants. Polish Journal of Environmental Studies 17: 917-923.]Search in Google Scholar
[PORĘBSKA G., OSTROWSKA A., BORZYSZKOWSKI J. 2008. Changes in the soil sorption complex of forest soils in Poland over the past 27 years. Science of the Total Environment 399: 105-112.10.1016/j.scitotenv.2008.03.029]Search in Google Scholar
[REUSS J.O. 1983. Implications of the calcium-aluminum exchange system for the effect of acid precipitation on soils. Journal of Environmental Quality 12: 591-595. http://dx.doi.org/10.2134/jeq1983.00472425001200040032x.]Search in Google Scholar
[ROSS D.S., MATSCHONAT G., SKYLLBERG U. 2008. Cation exchange in forest soils: the need for a new perspective. European Journal of Soil Science 59: 1141-1159.10.1111/j.1365-2389.2008.01069.x]Search in Google Scholar
[SCHOENHOLTZ S.H., VAN MIEGROET H., BURGER J.A. 2000. A review of chemical and physical properties as indicators of forest soil quality: challenges and opportunities. Forest Ecology and Management 138: 335-356.10.1016/S0378-1127(00)00423-0]Search in Google Scholar
[StatSoft 2010. Statistica. Statistics and Graphics.]Search in Google Scholar
[WRB – World Reference Base for Soil Resources (2006). FAO, Rome.]Search in Google Scholar