Acidification and chemical properties offagus sylvatical forest soils
作者:
Germund Tyler,
期刊:
Scandinavian Journal of Forest Research
(Taylor Available online 1987)
卷期:
Volume 2,
issue 1-4
页码: 263-271
ISSN:0282-7581
年代: 1987
DOI:10.1080/02827588709382463
出版商: Taylor & Francis Group
关键词: Fagus sylvatica;soil;acidification;pH;base cations;aluminium;South Sweden
数据来源: Taylor
摘要:
Exchangeable Al and acidity of Swedish beech(Fagus sylvaticaL.) forest soils are documented and discussed on the basis of known changes in soil chemical properties during recent decades. It is concluded that the pH and base saturation decrease, which has occurred in most forest soils of the region, has been accompanied by increases in the amount of exchangeable and soil solution Al and a greater decrease of the Ca: AI ratio, particularly in the B horizon. An adverse nutritional state now seems to prevail in most beech forest B horizons. Conditions are more favourable in the topsoil due to the formation of Al‐humus complexes which are less available to plant uptake, and in the case of very acid mor layers, a low Al content. However, in A (mull) horizons of intermediate acidity with a rather high clay content and low in humus, conditions approaching those of the B horizon may be found.
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