Ground cover ranks at Brooks Range treelines, Alaska (2019-2022)

Cover rankings of ground cover during 2019, 2020, 2021 and 2022 as sampled within n = 553 5-meter (m) radius plots (area = 78.5 square meters), each centered on a selected white spruce adult called "Focal Tree." The purpose of this dataset was to examine spatial variation in ground cover (less than 0.2-0.3 m tall) of the most important genera across the Brooks Range and in relation to local microclimates. It also provides a baseline for future ground cover rankings to determine changes in abundance. Taxa were ranked in order of cover from Rank1 with the most cover down to Rank5 with the lowest cover in most cases.

本数据集收录了2019、2020、2021及2022年的地表覆盖物（ground cover）排名数据，采样自553个半径5米（面积78.5平方米）的样地，每个样地均以选定的成年白云杉作为目标树（Focal Tree）作为中心。本数据集旨在探究布鲁克斯山脉（Brooks Range）内优势地表覆盖属（植株高度小于0.2~0.3米）的空间变异特征，及其与局地微气候的关联；同时可为后续开展地表覆盖物排名以评估其丰度变化提供基准基线。多数情况下，分类群（Taxa）按覆盖度从高到低排序：覆盖度最高者为Rank1，覆盖度最低者为Rank5。