Evidence of current soil acidification in spruce stands in the Vosges Mountains, North-Eastern France

To demonstrate directly soil acidification under spruce stands in the Strengbach catchment, soils from two adjacent stands aged 40 and 90 years were sampled intensively in 1990 and resampled in 1996. Soils already were very acid in 1990. Between 1990 and 1996, soils had experienced a significant dec...

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Bibliographic Details
Published in:Water, air and soil pollution air and soil pollution, 1998-07, Vol.105 (1/2), p.43-52
Main Authors: Dambrine, E, Pollier, B, Poszwa, A, Ranger, J, Probst, A, Viville, D, Biron, P, Granier, A
Format: Article
Language:English
Subjects:
acid deposition
acid soils
Acidic soils
Acidification
Acidity
Aluminum
Applied sciences
base saturation
Biological and physicochemical properties of pollutants. Interaction in the soil
Calcium
cation exchange capacity
Earth Sciences
Earth, ocean, space
Ecosystems
Engineering and environment geology. Geothermics
Environmental monitoring
Exact sciences and technology
exchangeable aluminum
exchangeable calcium
exchangeable magnesium
exchangeable potassium
Forest soils
Hydrology
Magnesium
Mountains
Picea
Pollution
Pollution, environment geology
Sciences of the Universe
Soil acidification
Soil and sediments pollution
Soil contaminants
Soil solution
Soils
Studies
Vegetation
Watersheds
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Summary:To demonstrate directly soil acidification under spruce stands in the Strengbach catchment, soils from two adjacent stands aged 40 and 90 years were sampled intensively in 1990 and resampled in 1996. Soils already were very acid in 1990. Between 1990 and 1996, soils had experienced a significant decrease in exchangeable Ca2+ and Mg2+ at all depths at the two sites except in the 0-10 cm layer, for which base saturation remained constant. Losses of Ca2+ calculated from a budget study at the same sites and from the comparison of exchangeable stores were similar. In contrast, the loss of Mg2+ from the exchange complex was higher than that computed from the field budget. Various reasons, including most probably uncertainties linked to the extremely low levels of Mg in the ecosystem, may explain this discrepancy. Since 1987, a general decrease of the (Ca2+ + Mg2+)/Al3+ ratio in soil solution was observed at both sites. These results are consistent with present day acidification of soils poor in weatherable minerals under spruce stands in the Vosges Mountains.[PUBLICATION ABSTRACT]
ISSN:0049-6979
1573-2932
DOI:10.1023/A:1005030331423