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| Content Provider | Springer Nature Link |
|---|---|
| Author | Ewald, Jörg |
| Copyright Year | 2000 |
| Abstract | In einer standortskundlich stratifizierten Stichprobe von 49 Beständen im Werdenfelser Land (Bayerische Alpen) ging hohe Kronentransparenz der Rotbuche mit geringer Verfügbarkeit von P, Mn und N in schwach entwickelten Kalk- und Dolomitböden einher. Auch war ihr Höhenwachstum auf Carbonatböden im Durchschnitt geringer als auf tiefgründig entkalkten Böden. Die ernährungskundliche Analyse von 8 ausgewählten Beständen, die bezüglich der Entwicklung ihrer Mineralböden eine Reihe bilden, erbrachte zum Teil enge Zusammenhänge zwischen Blattspiegelwerten und Bodeneigenschaften. Die Mn- und K-Gehalte der Buchenblätter konnten durch die Sättigung dieser Ionenspezies an den Austauschern erklärt werden, variierten jedoch stets auf unkritischem Niveau. Bezüglich der P-Spiegel bildeten die Bestände zwei klar getrennte Gruppen: Mittlere P-Ernährung herrschte auf gut entwickelten Mineralböden vor, während die Buchen auf unreifen Carbonatböden mit geringen P-Vorräten und hoher Ca-Sättigung sehr gering versorgt waren (0,6 bis 1,0 mg·g−1 TM). Ein Vergleich der Blattgröße und -farbe an mangelhaft und gut versorgten Buchen erbrachte keine signifikanten Unterschiede. Da die ebenfalls unkritischen N-Blattspiegel einem anderen Standortsmuster, nämlich dem Humusvorrat der Böden folgten, ergaben sich bei schwacher P-Versorgung extrem weite N/P-Verhältnisse um 30. Die Studie weist nach, daß die P-Versorgung der Buche auf Skeletthumusböden, Rendzinen und Terrae fuscae aus Dolomiten und Kalken der Kalkalpen mangelhaft ist, was ein Grund für die oft geringe Vitalität dieser Baumart im Bergmischwald sein könnte.An ecologically stratified transect of 49 samples revealed that high crown transparency and slow growth of European beech in the Bavarian Alps were related to soil chemical factors such as low availability of P, Mn and N. Tree vitality was particularly low in immature soils rich in carbonate, while laomy, more acidified sites appeared to be favourable for beech. Nutritional analysis of beech at 8 sites selected from the transect to represent a series of increasing mineral soil developments revealed close relationships between foliar element contents and soil properties: Mn and K were related to the saturation of these cations at exchange sites, but never reached conventional deficiency levels. With regard to foliar P-content the study sites formed two distinct groups: Moderate P-nutrition in well-developed mineral soils and extremely low foliar P-contents (0.6 to 1.0 mg·g−1 DM) in immature carbonate soils with a combination of low total P-stock and very high Ca-saturation. A comparison of leaf size and colour of beeches with low and normal P-content yielded no significant differences. As foliar N exhibited a different pattern most closely related to soil humus stock, extremely wide N/P ratios of ca. 30 were associated with low P-contents. The study indicates that P is a critical element in the nutrition of beech in the Calcareous Alps, which may be partly responsible for poor vitality of this species in mixed mountain forests. |
| Starting Page | 276 |
| Ending Page | 296 |
| Page Count | 21 |
| File Format | |
| ISSN | 00158003 |
| Journal | Forstwissenschaftliches Centralblatt vereinigt mit Tharandter forstliches Jahrbuch |
| Volume Number | 119 |
| Issue Number | 1-6 |
| e-ISSN | 14390337 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2000-01-01 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | Subscribed |
| Subject Keyword | Crown condition foliar nutrient analysis forest decline site ecology Forestry Plant Sciences Plant Ecology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science Forestry |
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