Carpinus betulus chorology

Distribution map of common hornbeam (<i>Carpinus betulus</i>)<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 geo-databases, scientific and grey 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>Polygon borders delimiting species ranges are generalized across the mainland and sea boundaries. 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. An additional version of polygon ranges are clipped with a coastline (name suffix "clip"), which have been derived from Natural Earth dataset "Admin 0 - Countries" 1:50M version 4.1.0 (https://www.naturalearthdata.com). <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

欧洲鹅耳枥（*Carpinus betulus*）分布地图

本数据集的分布地图通过整合多源异构数据制作而成，数据来源涵盖覆盖从国家级到区域级完整物种分布图的专题地图专著、物种出现点地理数据库、学术文献及灰色文献。

地图以ESRI形状文件（ESRI shapefiles）格式制作，并打包为ZIP归档文件。物种分布范围通过两类要素绘制：一是多边形要素（文件名后缀为“plg”），用于表征物种连续分布的栖息区域；二是点要素（文件名后缀为“pnt”），用于标识更为破碎孤立的种群。若存在物种自然分布区外的人为伴生出现记录，则会提供额外的点或多边形形状文件（后缀为“syn”）。

用于界定物种分布范围的多边形边界已针对大陆与海洋边界进行了概化处理，使用者可根据需求通过GIS图层掩膜海洋区域，或裁剪提取陆地分布范围。此外还提供经海岸线裁剪的多边形范围版本（文件名后缀为“clip”），该版本的数据源自Natural Earth数据集“Admin 0 - Countries”1:50M 4.1.0版（https://www.naturalearthdata.com）。

请按以下格式引用：
Caudullo, G., Welk, E., San-Miguel-Ayanz, J., 2017. 欧洲主要木本植物物种地理分布地图. 《数据简报》(Data in Brief) 12卷, 第662-666页. DOI: doi.org/10.1016/j.dib.2017.05.007

更多信息及参考文献详见补充材料文档：
https://doi.org/10.6084/m9.figshare.5091901

本地理分布地图集为“欧洲林木树种图集”（European Atlas of Forest Tree Species）项目的组成部分：
https://w3id.org/mtv/FISE-Comm/v01