Der Datensatz «Walderschliessungsstrassen 2013» des Schweizerischen Landesforstinventars

Abstract

The Swiss National Forest Inventory dataset «Forest Access Roads 2013» Information on forest accessibility is important for forest management. For example, it helps to determine the potential wood supply and identify areas difficult to access. In 2013–2014, a survey was conducted in Switzerland to update the Forest Access Roads geo-dataset within the framework of the Swiss National Forest Inventory (NFI). The resulting nationwide dataset contains valuable information on truck-accessible forest roads that can be used to transport wood. The survey involved interviewing staff from the approximately 800 local forest services in Switzerland and recording the data first on paper maps and then in digitized form. The data in the NFI on the forest roads could thus be updated and additional information regarding their trafficability for specific categories of truck included. The information has now been attached to the geometries of the Roads and Tracks of the swissTLM3D (release 2012) of the Federal Office of Topography swisstopo. The resulting data are suitable for statistical analyses and modeling, but further (labour-intensive) validation work would be necessary if they are to be used as a basis for applications requiring more spatial accuracy, such as navigation systems. The data are managed at the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL) and are available for third parties for non-commercial use provided they have purchased a TLM license. In this article, the dataset, as well as its acquisition and potential uses, are described.

Spatially explicit assessment of forest road suitability for timber extraction and hauling in Switzerland

“…However, this dataset currently does not contain information on road width, bearing capacity and surface material relevant to the usability for forestry operations. This information has been collected by the NFI in an interview survey with foresters of all foresting districts in every inventory cycle since 1983 (Brassel and Lischke 2001;Fraefel and Fischer 2019;Müller et al 2016). The resulting dataset consists of the swissTLM 3D geometries and additional attributes from the survey.…”

“…Vector datasets included the NFI forest road dataset with information indicating the type of truck that can be used on each road segment and a point dataset giving connection points where the roads from the forest connect to the superordinate road network (Fig. 4; Müller et al (2016)).…”