Podzolization is the comprehensive name for the process of mobilization and precipitation of dissolved organic matter, together with aluminum Al and iron Fe as they are leaching down from the A and E horizons to the B horizon [1]. Through this process the overlying eluvial horizons are getting bleached. The complexes are moving to the brown, red or black horizon, which consist of cemented sesquioxides and/or organic compounds. The process of podzolization occurs usually under low pH value [2]. The corresponding soil type is called Podzol. But there exist synonyms for Podzol. In China and United States of America it is called Spodosoils, in Brazil it's called Espodossolos and in Australia Pedosols. The Podzols are typical soils for humid boreal and humid temperate zones. Podzols cover about 485 million ha worldwide and are usually found under coniferous forest or under heather [3]. Podzols are able to occur on almost any rock and form on quartz-rich sands and sandstones, or on sedimentary debris from magmatic rocks, provided that there is a high precipitation [4]. Podzols count as unattractive soil for farming. The reason is the sandy fraction of the soil, which means a low level of moisture and nutrient. A low pH makes it even worse. Furthermore, phosphate deficit and aluminium toxicity are other problems. Podzols can be left idle under their natural fauna or else the best use of Podzols is grazing [5].
6. http://edafologia.ugr.es/revista/tomo9b/a107text.pdf
7. http://www.bauing.uni-wuppertal.de/boden/downloads_save/Podsol_Boden%20des%20Jahres_2007_JPNSS.pdf