Larix decidua chorology

Distribution map of European larch (<i>Larix decidua</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

欧洲落叶松（<i>Larix decidua</i>）分布区图谱

本分布区图谱通过整合多源异构数据编制而成，数据来源涵盖提供完整物种分布地图的国家级至区域级专题地图集专著、物种出现点地理数据库、学术文献与灰色文献。

本数据集以ESRI形状文件（ESRI shapefiles，*.shp、*.shx、*.dbf、*.prj）打包归档于ZIP压缩包中。图谱采用两类要素表征物种分布范围：其一为多边形要素（文件名后缀“plg”），用于界定物种的连续栖息区域；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。若在物种自然分布范围外存在人为伴生的出现记录，则将附带额外的点/多边形形状文件（文件名后缀“syn”）。

用于界定物种分布范围的多边形边界已针对陆地与海洋边界进行了概化处理，使用者可通过自定义GIS数据图层掩膜海洋区域，或裁切提取陆地分布范围子集。另有一类经海岸线裁切的多边形范围数据（文件名后缀“clip”），其海岸线数据源自Natural Earth数据集（Natural Earth dataset）“Admin 0 - Countries”1:50M版本4.1.0（https://www.naturalearthdata.com）。

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

更多补充信息及参考文献详见“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