Forest Access Roads 2013

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. __Related Publication__: [doi: 10.3188/szf.2016.0136](http://dx.doi.org/10.3188/szf.2016.0136)

2013—2014年，瑞士国家森林清查（Swiss National Forest Inventory, NFI）框架内开展了一项调查，旨在更新该国森林通行道路地理数据集。本次生成的全国性数据集包含了可用于木材运输的卡车通行林区道路的宝贵信息。调查工作通过走访瑞士约800家地方林业部门工作人员完成，数据先记录于纸质地图，随后完成数字化转化。借此调查，NFI中原有的林区道路数据得以更新，并补充了其针对特定类别卡车的通行性能相关信息。目前，该信息已关联至瑞士联邦地形局（swisstopo）发布的swissTLM3D（2012版）道路与小径几何要素中。

生成的数据集可用于统计分析与建模，但如果将其作为对空间精度要求更高的应用（如导航系统）的基础数据，则需开展进一步的（劳动密集型）验证工作。该数据集由瑞士联邦森林、雪与景观研究所（WSL）负责管理，第三方若已获取TLM许可证，可用于非商业用途。

__相关出版物__: [doi: 10.3188/szf.2016.0136](http://dx.doi.org/10.3188/szf.2016.0136)