Ground layer above-ground biomass of 20 sites of Yakutia from 2018 - Raw data of fresh weight and dry weight for each sub-ground vegetation type sampling plot

Field investigations were performed selecting locations to include the variety of present boreal forest stands between 113-130 °E, eastwards of the city Yaktusk until westernmost sites close to Lake Khamra. To provide a full assessment of the current state of aboveground biomass the ground vegetation layer was additionally sampled. Fifteen-meter radius sample plots (sites) were demarcated in the most homogeneous locations. Heterogeneity was accommodated by roughly assorting vegetation into one to two vegetation types per sampling plot. Within each area of roughly estimated vegetation types we selected one 0.5 x 0.5 m subplot for representative ground-layer above-ground biomass (ABG) harvesting (major taxa and other). For moss and lichen AGB harvesting inside 0.5 x 0.5 m subplots representative 0.1 x 0.1 m subplots were chosen. All ground-layer vegetation AGB assessments were calculated for the fifteen-meter radius plot in g/m² for each sample plot. The present trees and tree-shape growing shrub species were included only up to heights of <40 cm.
This dataset contains the raw data of fresh weight and dry weight for each sub-ground vegetation type sampling plot.

本研究开展野外调查，选取113°E至130°E范围内、雅库茨克（Yaktusk）市以东至最西端毗邻哈姆拉湖（Lake Khamra）的样点区域，覆盖该区域内多样的寒温带针叶林林分。为全面评估地上生物量的当前状态，研究团队额外对地表植被层开展采样。研究在植被最为均一的区域划定半径为15米的样地（采样点）；为适配样地内的植被异质性，每个采样样地大致划分为1至2种植被类型。在每个大致划定的植被类型区域内，选取1个0.5米×0.5米的小样方，用于采集具有代表性的地表层地上生物量（aboveground biomass, ABG）样本（涵盖优势类群及其他类群）。针对苔藓和地衣的ABG采集，则在0.5米×0.5米小样方内选取代表性的0.1米×0.1米微型小样方开展采样。所有地表植被ABG评估结果均以克每平方米（g/m²）为单位，换算至对应15米半径样地的整体水平。本次调查纳入的乔木及树状生长灌木物种，仅统计株高低于40厘米的个体。
本数据集包含各地表植被类型采样小样方的鲜重与干重原始数据。