Effects of permafrost thaw on nitrogen availability and plant-soil interactions in a boreal Alaskan lowland: VI - Soil Nitrogen Pools

This dataset examines shifts in soil N and extractable soil pore water chemistry along a lowland boreal permafrost thaw chronosequence. Data was collected in 2013 at the APEX Beta and forested study plots, located adjacent to the BNZ experimental forest. Measured parameters include: dissolved inorganic N, dissolved organic N, free amino acids, total dissolved N, C:N of soil material, soil bulk density, soil N concentration, soil C concentrations, volumetric soil moisture. Soil pore water samples were collected every three to four weeks from late June to late September, 2013 for a total of five sampling events, while soil cores were collected in late July 2013 for physical characterstics and soil C and N concentrations.

本数据集旨在探究低地北方寒带永久冻土融蚀时序序列上的土壤氮素与可提取土壤孔隙水化学特征的变化规律。数据集于2013年采集自毗邻BNZ实验林的APEX Beta样地与森林研究样地。本次测定的参数包括：溶解态无机氮（dissolved inorganic N）、溶解态有机氮（dissolved organic N）、游离氨基酸、总溶解态氮（total dissolved N）、土壤碳氮比、土壤容重、土壤氮浓度、土壤碳浓度及土壤体积含水量。土壤孔隙水样品于2013年6月下旬至9月下旬期间，以每3至4周一次的频率采集，共计完成5次采样；土壤柱芯样品则于2013年7月下旬采集，用于测定土壤物理特性及土壤碳、氮浓度。