Invasive neophytes along national roads

Streets and Highways are important corridors for the spread of invasive plant species. On behalf of the **Federal Roads Office, FEDRO**, WSL surveyed the national road network in 2021 and recorded the distribution of three invasive neophytes using **AI-based species recognition** in a total of **3.8 million georeferenced images**. The mapped species are the **tree of heaven *(Ailanthus altissima)***, **common ragweed *(Ambrosia artemisiifolia)*** and **narrow-leaved ragweed *(Senecio inaequidens)***.
The data here is part of the **FEDRO documentation** and shows the mapping results as images and interactive maps. The interactive maps are - technically speaking - **self-contained HTML files** that can be displayed with standard web browsers. To reduce the file size, the downloads are provided in zip format.
**License**: This is not an independent data publication by WSL. The data was published together with the written document Trocmé et al. 2023, **© FEDRO 2023** (see related publication: © ASTRA 2023, Abdruck - ausser für kommerzielle Nutzung - unter Angabe der Quelle gestattet).