Die Baumbedeckung in der Schweiz

Treecover in Switzerland The requirements for national forest inventorieshave changed in recent decades, as have the issues involved. Initially, the focus was mainly information on timber resources, but today social and environmental functions are also of interest. An a priori separation of the surveyed areas into forestand non- forestduring data collection limits the interpretation of the treeresources. Not all treesare located in the forestand not all forestsare fully stocked. In the aerial photo interpretation of the 3rd National Forest Inventory, land cover on a regular sampling grid was determined regardless of the land use. This allowed, for the first time, nationwide information on treeresources to be obtained, independent of forestdefinitions. The treecover of Switzerland is 27.0% regardless of whether the treesare in the forestor outside. The area covered with forest(proportionally 29.4%) is larger than that covered with trees. The location of the treesoutside the foresttends to be...