Data For: The Influence of Post-Fire Recovery and Environmental Conditions on Boreal Vegetation

This data was gathered to explore patterns of vegetation recovery after fire in the boreal forests of the Northwest Territories, Canada. Vegetation and environmental data was collected from a chronosequence of sampling sites ranging from one to 275 years after fire covering both the Taiga Shield and Taiga Plains Ecoregions. The dataset is comprised of three data sheets: Jorgensen et al_SpeciesRelativeAbundance includes presence and absence data per plot for a selection of vascular plant and lichen species, as well as associated environmental variables and site information. Each species has a "presence" column and an "absence" column, adding to five, indicating the number of quadrats per plot where the species was found. Jorgensen et al_VegetationCommunityComposition includes abundance indices (from 1-5) per plot for all vascular and non-vascular species used in manuscript ordinations (excluded: species present in only one plot, species causing anomalies - see manuscript for more information). Jorgensen et al_SeedlingSaplingCounts includes counts of the number of seedlings and saplings <1.3m tall per sampling plot for black spruce (Picea mariana), paper birch (Betula papyrifera), and trembling aspen (Populus tremuloides).

本数据集旨在探究加拿大西北地区北方针叶林（boreal forests）火灾后的植被恢复模式。研究人员从覆盖泰加盾地（Taiga Shield）与泰加平原生态区（Taiga Plains Ecoregions）的时间序列（chronosequence）采样样地中收集植被与环境数据，这些样地的火灾后年限跨度为1至275年。本数据集包含三张数据表：1. Jorgensen et al_SpeciesRelativeAbundance：包含选定的维管植物（vascular plant）与地衣（lichen）物种在各样地的存在/缺失数据，以及相关环境变量与样地信息。每个物种设有“存在”列与“缺失”列，二者数值之和为5，用以表征该物种在单一样地中被发现的样方（quadrat）数量。2. Jorgensen et al_VegetationCommunityComposition：包含用于论文排序分析（ordinations）的所有维管植物与非维管植物（non-vascular species）在各样地的丰度指数（abundance indices，取值范围为1至5）；已剔除仅在单一样地中出现的物种以及引发异常值的物种，详细说明参见相关论文。3. Jorgensen et al_SeedlingSaplingCounts：包含针对黑云杉（Picea mariana）、纸桦（Betula papyrifera）以及颤杨（Populus tremuloides）在各采样样地中株高小于1.3m的幼苗与幼树的计数数据。