期刊
GEODERMA
卷 94, 期 2-4, 页码 91-107出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0016-7061(99)00036-1
关键词
podzol; spodosol; coniferous forest soil; weathering; eluvial horizon; illuvial horizon
类别
This paper reviews the major mechanisms proposed to explain podzolization. These include the production of organic acids that form soluble complexes with aluminium/iron thereby enhancing weathering, followed by illuviation by precipitation/adsorption processes occurring at greater depth. Precipitation of aluminium and iron is explained by decreasing solubility of increasingly metal-rich complexes, or by microbial degradation of the organic ligand. We also discuss proposed role of inorganic hydroxy-aluminium-silicate sols in podzolization. The paper is introductory to a multidisciplinary study of podzolization performed in the Nordic Countries presented in this volume. (C) 2000 Elsevier Science B.V. All rights reserved.
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