Swiss Federal Institute for Forest, Snow and Landscape Research WSL

Long-term Forest Ecosystem Research

Air pollution and climate change have an effect on the forest. We examine these effects as part of the Long-Term Forest Ecosystem Research (LWF) programme.

Den Zustand des Waldes erfassen

We need reliable information in order to record the condition of the forest on an ongoing basis and to understand precisely what happens in the forest when the environment changes. An important source of data here is the Long-Term Forest Ecosystem Research (LWF) programme. It consists of 19 permanent monitoring sites on which we have regularly carried out numerous measurements since 1994. We have also been recording the health of trees on the monitoring sites of the Sanasilva Inventory, which is part of the LWF programme (see Sites), since 1985. LWF is also a partner with several of its sites in TreeNet, the biological drought and growth indicator network.