Frangula alnus chorology

Distribution map of alder buckthorn (<i>Frangula alnu</i>s)<br><br>These maps were produced by combining numerous and heterogeneous data collected from atlas monographs providing complete species distribution maps, from national to regional atlases, occurrence geodatabases and scientific literature.<br>The maps were created using ESRI shapefiles (*.shp, *.shx, *.dbf, *.prj files) archived in the ZIP file. Species range is mapped with polygon features (name suffix “plg”), which define continuous areas of occupancy of the species, and with point features (name suffix “pnt”), which identify more fragmented and isolated populations. If synanthropic occurrences are reported outside the species natural range, additional point and/or polygon shapefiles are also present (suffix “syn”).<br>All polygon borders delimiting the range are generalized across the mainland and sea boundaries, and not clipped to a specific coastline. This offers the possibility to mask sea areas, or to clip and extract the terrestrial range parts using GIS data layers of the users’ choice. <br><br>Please cite as:<br>Caudullo, G., Welk, E., San-Miguel-Ayanz, J., 2017. Chorological maps for the main European woody species. Data in Brief 12, 662-666. DOI: doi.org/10.1016/j.dib.2017.05.007 <br><br>Additional information and used references are on 'supplementary materials' document:<br>https://doi.org/10.6084/m9.figshare.5091901<br><br>Chorological maps are part of the "European Atlas of Forest Tree Species" project:<br>https://w3id.org/mtv/FISE-Comm/v01

欧洲鼠李（*Frangula alnus*）的分布图谱

本图谱整合了多源异构数据，涵盖覆盖完整物种分布地图的国家级至区域级图集专著、物种发生点地理数据库及科学文献。
本图谱采用ESRI 形状文件（ESRI shapefiles，包含*.shp、*.shx、*.dbf、*.prj格式文件）打包为ZIP压缩包存储。物种分布范围通过面要素（文件名后缀"plg"）表征，用于界定物种的连续栖息区域；同时辅以点要素（文件名后缀"pnt"），用以标识更为破碎、孤立的种群。若有报道显示物种在自然分布区外存在人为伴生的发生记录，则会附带额外的点或面形状文件（后缀"syn"）。

所有界定分布范围的面边界已针对大陆与海域边界进行概化处理，未裁剪至特定海岸线。该设计支持用户根据自身需求，通过地理信息系统（GIS）数据图层掩膜海洋区域，或裁剪提取陆地分布范围部分。

请按以下格式引用：
Caudullo, G., Welk, E., San-Miguel-Ayanz, J., 2017. 欧洲主要木本植物种的分布区图谱. 《数据简报（Data in Brief）》12, 662-666. DOI: doi.org/10.1016/j.dib.2017.05.007

补充信息与参考文献详见"补充材料"文档：
https://doi.org/10.6084/m9.figshare.5091901

本分布区图谱隶属于"欧洲森林树种图集"项目：
https://w3id.org/mtv/FISE-Comm/v01