ABoVE: Characterization of Carbon Dynamics in Burned Forest Plots, NWT, Canada, 2014

This record is for the dataset “ABoVE: Characterization of Carbon Dynamics in Burned Forest Plots, NWT, Canada, 2014” at https://doi.org/10.3334/ORNLDAAC/1664. This dataset provides field data from boreal forests in the Northwest Territories (NWT), Canada, that were burned by wildfires in 2014. During fieldwork in 2015, 211 burned plots were established. From these plots, thirty-two forest plots were selected that were dominated by black spruce and were representative of the full moisture gradient across the landscape, ranging from xeric to sub-hygric. Plot observations included slope, aspect, and moisture. At each plot, one intact organic soil profile associated with a specific burn depth was selected and analyzed for carbon content and radiocarbon (14C) values at specific profile depth increments to assess legacy carbon presence and combustion. Vegetation observations included tree density. Stand age at the time of the fire was determined from tree-ring counts. Estimates of pre-fire below and aboveground carbon pools were derived. The percent of total NWT wildfire burned area comprising of \"young\" stands (less than 60 years old at time of fire) was estimated. This data can be downloaded at https://doi.org/10.3334/ORNLDAAC/1664.

本数据集对应DOI为https://doi.org/10.3334/ORNLDAAC/1664的《ABoVE：加拿大西北地区2014年火烧森林样地碳动态特征》数据集。本数据集包含加拿大西北地区（Northwest Territories，简称NWT）2014年受野火侵袭的北方针叶林野外实测数据。2015年野外调查期间共设立211个火烧样地，从中筛选出32个以黑云杉（black spruce）为优势种的样地，这些样地可代表研究区从旱生（xeric）到亚湿生（sub-hygric）的完整景观土壤水分梯度。样地调查指标涵盖坡度、坡向与土壤含水率。在每个样地内，选取一个与特定火烧深度匹配的完整有机土壤剖面，按预设的剖面深度分层采样，分析其碳含量与放射性碳（radiocarbon，¹⁴C）值，以评估遗留碳的赋存状态与燃烧程度。植被调查指标包括林木密度，通过树木年轮计数确定火灾发生时的林分年龄，并推导得到火灾前地下与地上碳库的估算值。本研究同时估算了加拿大西北地区野火总过火面积中，"幼龄林分"（火灾发生时树龄不足60年）所占的比例。该数据集可通过上述DOI链接下载获取。