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Forest damage in west germany results of the forest damage survey 1987



Forest damage in west germany results of the forest damage survey 1987



Schriftenreihe des Bundesministeriums fuer Ernaehrung Landwirtschaft und Forsten Reihe A Angewandte Wissenschaft (349): 1-89



The results of the forest damage survey in 1987 showed that the contradictory development of damage in coniferous and deciduous trees, which was already discernable in 1986, continued in 1987. The condition of pines, firs, and now also spruces, has improved nationally to some extent. In the deciduous trees, especially in beeches and oaks, the damage has increased, however. They are now more damaged than the pines and spruces. As in previous years, the fir was the most damaged tree species. In all tree species, stands over 60 yrs old were significantly more damaged than younger ones. This is especially true in the spruce. Coniferous trees make up almost two-thirds of the forest area. The decrease in their damage therefore determines the total result more than the increase in the damage of deciduous trees. Thus the percentage of trees weakened or damaged in their vitality in West Germany in 1987 decreased for the first time by 1.4% points to 52.3%. This represents a slight improvement almost to the damage level of 1985. When only the medium-severe and severe damage is considered, the same picture can be seen; a decrease in damage of 1.6% points to 17.3%. This corresponds to the damage level of 1984.

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