Abies numidica chorology

Distribution map of Algerian fir (Abies numidica)

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.
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").
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).

Please cite as:
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

Additional information and used references are on 'supplementary materials' document:
https://doi.org/10.6084/m9.figshare.5091901

Chorological maps are part of the "European Atlas of Forest Tree Species" project:
https://w3id.org/mtv/FISE-Comm/v01

阿尔及利亚冷杉（Abies numidica）分布图集

本图集通过整合多源异质性数据制作而成，数据来源涵盖提供完整物种分布图的专题图集、国家级至区域级植物志图集、物种出现点地理数据库，以及学术与灰色文献。

本图集采用归档于ZIP压缩包中的ESRI形状文件（*.shp、*.shx、*.dbf、*.prj）制作。物种分布范围通过两种要素类表达：一是以面要素（文件名后缀为"plg"）界定物种连续占据的区域；二是以点要素（文件名后缀为"pnt"）标识更为破碎且孤立的种群。若存在物种在自然分布区外的人为伴生出现记录，还将提供额外的点要素和/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域边界进行了概化处理，使用者可根据需求通过GIS图层屏蔽海域区域，或裁切并提取陆地分布范围部分。此外还提供了基于海岸线裁切的面要素范围版本（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）。

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分布区图集. 数据简报, 12: 662-666. 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

本分布区图集为"欧洲林木树种图集"项目的组成部分：https://w3id.org/mtv/FISE-Comm/v01