Quercus cerris chorology

Distribution map of Turkey oak (<i>Quercus cerris</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

土耳其栎（*Quercus cerris*）分布范围图

本套地图通过整合多源异构数据制作而成，数据来源包括可提供完整物种分布地图的专题图集、国家级至区域级的植物志图集、物种出现点地理数据库，以及正式学术文献与灰色文献。
本套地图以压缩包存档的ESRI形状文件（*.shp、*.shx、*.dbf、*.prj）为载体。物种分布范围通过两类要素进行制图：其一为面要素（文件名后缀"plg"），用于表征物种连续占据的生境区域；其二为点要素（文件名后缀"pnt"），用于标识更为破碎孤立的种群。若有物种在自然分布区外的人为伴生出现记录，则会附带额外的点要素和/或面要素形状文件（后缀为"syn"）。
用于界定物种分布范围的面要素边界已针对陆地与海洋边界进行了概化处理，使用者可根据自身需求通过GIS图层对海洋区域进行掩膜，或裁剪提取陆地分布范围部分。此外还提供经海岸线裁剪的面要素范围版本（文件名后缀"clip"），该版本数据源自自然地球（Natural Earth）数据集"Admin 0 - Countries"1:50M 4.1.0版（https://www.naturalearthdata.com）。

引用格式如下：
Caudullo, G., Welk, E., San-Miguel-Ayanz, J., 2017. 欧洲主要木本植物物种区系分布地图. 《数据简报》（Data in Brief）12卷, 662-666页. DOI: doi.org/10.1016/j.dib.2017.05.007

更多相关信息与引用文献详见补充材料文档：
https://doi.org/10.6084/m9.figshare.5091901

本套区系分布地图为"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