Refine search
Results 31-35 of 35
The Swiss National Forest Inventory, an information for the assessment of the condition and long-term changes of Swiss forest
1993
Brassel, P. (Swiss Federal Institute for Forest Snow and Landscape Research, Birmensdorf (Switzerland))
The national forest inventory of Switzerland is a large-scale assessment of the condition and changes in Swiss forests. Some of the most important advantages of the NFI are its permanence, the long-term and flexible inventory design, the high data-quality and the compatibility with the damage inventory.
Show more [+] Less [-]Direct and indirect effects and the long term risks of air pollution on forest ecosystems: the role of forest health monitoring
1993
Innes, J.L. (Swiss Federal Institute for Forest Snow and Landscape Research, Birmensdorf (Switzerland))
Monitoring of forest health represents an important part of programmes assessing the actual and potential impact of air pollution and climate change on forests. The available information indicates that variation between years is high, indicating that long term time series will be required to identify trends in forest condition.
Show more [+] Less [-]Direct and indirect effects and the long term risks of air pollution on forest ecosystems: effects and risks on ectomycorrhizae
1993
Brunner, I. (Swiss Federal Institute for Forest Snow and Landscape Research, Birmensdorf (Switzerland))
Two main effects on ectomycorrhizae can be distinguished: direct effects due to a change in the soil chemistry and indirect effects due to a change of the carbohydrate supply from the host trees to the roots.
Show more [+] Less [-]Direct and indirect effects and the long term risks of air pollution on forest ecosystems: economic risks involved in forest devastation through air pollution and climate change
1993
Schulz, H. (University of Munich (Germany). Institute for Wood Research)
Wood will have a great importance as renewable raw material. Forest devastation endangers the world's future wood supply. We need a long-term strategy for forestry and forest products industries to protect complete ecological life cycle.
Show more [+] Less [-]General summary and synthesis | [Resume general et synthese] | [Resumen general y sintesis]
1993
Innes, J.L. | Schlaepfer, R. | Bucher, H.P. (Swiss Federal Institute for Forest Snow and Landscape Research, Birmensdorf (Switzerland)) | Kraeuchi, N. (Swiss Federal Institute for Technology, Zurich (Switzerland))
The report summarizes scientific information about forest ecosystems and their relationship to climate change and air pollution, with special emphasis on forests in Europe, North America and China. The contributions reflect the current state of science, but also uncertainties and gaps in scientific knowledge.
Show more [+] Less [-]