Quercus frainetto chorology

Distribution map of Hungarian oak (<i>Quercus frainetto</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

本数据集为匈牙利栎（*Quercus frainetto*）的分布地图集。
此类地图通过整合多源异构数据制作而成，数据来源涵盖提供完整物种分布地图的区域专著图集（从国家级到区域级植物图集）、物种出现点地理数据库、学术文献与灰色文献。
此类地图采用ESRI形状文件（ESRI shapefile，包含*.shp、*.shx、*.dbf、*.prj格式文件）制作，所有文件打包存储于ZIP压缩包内。物种的分布范围通过两类要素进行可视化表达：面要素（文件名后缀为"plg"）用于界定物种的连续分布区域，点要素（文件名后缀为"pnt"）则用于标识更为破碎、孤立的局域种群。若在物种自然分布范围之外存在人为伴生（synanthropic）的出现记录，则将附带额外的点和/或面形状文件（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域边界进行了概化处理，使用者可根据自身需求，通过自选的地理信息系统（GIS）图层对海域区域进行掩膜操作，或裁剪提取陆地分布范围的相关部分。此外还提供另一版经海岸线裁剪的面要素范围文件（文件名后缀为"clip"），该文件基于Natural Earth数据集"Admin 0 - Countries"1:50M 4.1.0版本制作（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. Data in Brief, 12, 662-666. DOI: doi.org/10.1016/j.dib.2017.05.007
更多相关信息及参考文献详见补充材料文档：https://doi.org/10.6084/m9.figshare.5091901
本区系分布地图集为"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