1 Forest is defined as any area that is covered with forest trees or forest shrubs and can fulfil forest functions. Origin, type of use and land registry designation are not decisive.
2 Also defined as forest are:
- a.
- grazing forests, wooded pastures and chestnut and walnut groves;
- b.
- unstocked or unproductive areas of a forest plot, such as clearings, forest roads and other forest structures and installations;
- c.
- plots subject to compulsory afforestation.
3 Isolated groups of trees and shrubs, hedges, avenues, gardens, planted areas and parks, tree plantations established on open ground for short-term use and trees and bushes on check dams and in the immediate foreground of such installations are not defined as forest.
4 Within the framework defined by the Federal Council, the cantons may determine the width, area and age, from which an area newly colonised by forest shall be defined as forest, and the width and area from which other wooded areas shall be defined as forest. If the wooded area fulfils social or protective functions, in particular, the cantonal criteria are not definitive.