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- Ulrich, Bernhard
- Forstwissenschaftliches Centralblatt 1999 v.118 no.1-6 pp. 118-126
- base saturation; canopy; defoliation; forest ecosystems; forest soils; monitoring; nitrogen; nutrients; risk; soil depth; space and time; stand development; trees; Germany
- ... Forest ecosystems are characterized by a hierarchy of their processes, differentiated according to a space and time scale. Thus, the hierarchy theory can be applied, which allows conclusions about self-organization, stability conditions, and the reaction to disturbances. Process patterns allow to judge whether a process is undisturbed or disturbed. This is demonstrated by growth patterns in the ro ...
- Asche, N.
- Forstwissenschaftliches Centralblatt 1999 v.118 no.1-6 pp. 294-301
- Fagus sylvatica; acidification; case studies; forest ecosystems; forest soils; forests; liming; root systems; rooting; soil acidification; soil amendments; soil morphology; soil pH; trees; Germany
- ... High acid loads have led to the acidification of large parts of the forest soil. To compensate for the hazards of soil acidification large forest areas in North-Rhine-Westphalia have been limed since the early eighties. It has been feared that the root system of trees might degenerate into shallow rooting as a consequence of forest liming. This would have considerable, adverse effects on the stabi ...