V_heath_vascular_plant_abundance_observational
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Abundance of vascular plants measured using point intercept frequency. The datasets contains point frequency data (which can be converted to biomass estimates) of the following functional groups and species: * Betula nana * Broad leaved grasses * Calamagrostis phragmitoides * Deciduous dwarf shrubs * Deciduous vascular cryptogams * Deschampsia cespitosa * Empetrum nigrum * Equisetum sp * Evergreen dwarf shrubs * Evergreen non woody * Green willows * Grey willows * Hemiparasites * Nardus stricta * Narrow leaved grasses * Prostrate willows * Rumex acetosa * Salix herbacea * Sedges and rushes * Small forbs * Tall forbs * Vaccinium myrtillus The dataset includes three different types of files and all files (except the readme) are saved as ;-separated txt-files: * One data file per year (_YEAR.txt) * One coordinate file with coordinates of all sites included in the dataset (_coordinates.txt) * One auxiliary file with information about which sites are included in the dataset and when (_aux.txt) * One readme file with additional information about the variables included in the study design (_readme.pdf) The dataset has a two-year embargo, older versions of the dataset are publicly available for download.
本数据集采用点截法频率(point intercept frequency)测量维管植物的丰度。数据集包含以下功能群与物种的点频率数据(该数据可转换为生物量估算值): - 矮桦(Betula nana) - 宽叶禾草 - 芦苇状拂子茅(Calamagrostis phragmitoides) - 落叶矮灌木 - 落叶维管隐花植物 - 发草(Deschampsia cespitosa) - 黑果岩高兰(Empetrum nigrum) - 木贼属(Equisetum sp.) - 常绿矮灌木 - 常绿非木本植物 - 绿叶柳类 - 灰柳类 - 半寄生植物 - 硬草(Nardus stricta) - 窄叶禾草 - 匍匐柳类 - 酸模(Rumex acetosa) - 圆叶柳(Salix herbacea) - 莎草与灯心草 - 小型非禾本草本植物 - 大型非禾本草本植物 - 越橘(Vaccinium myrtillus) 本数据集包含三类文件,除说明文档(readme)外,所有文件均以分号分隔的文本文件(;-separated txt-files)格式存储: - 按年份命名的数据文件(_YEAR.txt) - 包含数据集所有样地坐标的坐标文件(_coordinates.txt) - 包含数据集样地及其调查时间信息的辅助文件(_aux.txt) - 包含研究设计中变量相关补充信息的说明文档(_readme.pdf) 本数据集设有两年保密期(embargo),旧版数据集可公开下载。



