pH-Änderungen der Böden im Bereich des Forstamtes Rothenbuch seit 1982

Translated title of the contribution: Changes of soil-pH in the forest district of Rothenbuch since 1982

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In the forest district of Rothenbuch with an area of about 6100 ha, 88 observation points have been installed, where pH-measurements were carried out since 1982. Statistical analysis of the data shows that about 40 to 50% of the variance of pH can be explained by known influential factors. The pHKCl in 15-17 cm depth is more strongly affected by the geological parent material, whereas pHH2O (0-2 cm), pHH2O (15-17 cm) and pHKCl (0-2 cm) show a more marked influence of stand structure, ground vegetation and liming. In unlimed pure hardwood stands, pHH2O in the uppermost mineral soil is influenced by the microbiological milieu, which depends on regional climatic conditions and the interior climate of the stand. During the observation period, a clear pH-decrease as well as a clear pH-increase could be noted at individual measuring points. The pH-shifting depends on the initial pH-value. Observation points with rather high resp. rather low initial pH-values show a marked pH-decrease resp. pH-increase. In the range around pH 4.0, on the average only small pH-fluctuations occur. Although there might be a trend of acidification caused by atmospheric deposition, this cannot be proven by the data of this study. This is due to the fact, that there are many influences affecting the measured pH-value and that soils derived from sandstone are a priori rather acidic.

Translated title of the contributionChanges of soil-pH in the forest district of Rothenbuch since 1982
Original languageGerman
Pages (from-to)169-178
Number of pages10
JournalForstwissenschaftliches Centralblatt
Issue number1
StatePublished - Dec 1992
Externally publishedYes


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