Relationship Between Recent Changes of Growth and Nutrition of Norway Spruce, Scots Pine , and European Beech Forests in Europe - RECOGNITION -

Joensuu

1999

94 S.

zahlr. Abb., Tab., Lit.

Bandaufführung

14099

57347

Growth of forests in Europe appears to have increased over recent decades. The rigorous studies on which this conclusion was based are nevertheless a kind of "accessibility" sample of the forest population - selected because data was available. it is imperative that the conclusion is tested on a wider range of sites. The cause of the growth increment must also be investigated. There is a wide range of environmental variables that could conceivably be responsible - anthropogenic N deposition; CO2 increase, temperature increase etc. It is improtant that we try to understand which and in what combination could be responsible. The long term consequences and the ameliorative measures required (if any) will vary with the differing causes. This problem cannot be tackled by representatives of one narrow scientific discipline. Nor can it be tackled by one means alone. More field observations are required. Interpretation will need the input of ecophysiological modelling skills.