Publication Date:
2024-05-07
Description:
Arctic warming increases the degradation of permafrost soils but little is known about floodplain soils and other permafrost soils in the permafrost region. This dataset present soil properties from twelve analyzed cores located in the northeastern Siberian Lena River Delta within the continuous permafrost zone in northern Yakutia, Russia that were sampled in 2018. The cores represent intact yedoma, yedoma thaw slumps, and floodplain profiles. The soil coring and sampling was carried out in August 2018 for a total of 30 soil cores, 35 soil profiles, and 341 sediment samples. First, vegetation and other characteristics of the plots were described. Then, the active layer soils were excavated, described, and sampled with a fixed volume cylinder (250 cm³). Then the permafrost layers were sampled with a modified, snow, ice, and permafrost (SIPRE) auger to a depth of 1 m (core diameter of 7.62 cm) and visually described in their characteristics. Each core was divided into subsamples with 5-10 cm length according to its facies horizons, transported frozen to Alfred Wegener Institute in Potsdam, and stored at -20 °C until analysis. A subset of these sediment samples (n=105 from 12 cores) were later analyzed in the laboratory for physical and chemical properties. Selected samples were further analyzed for radiocarbon, grain size analysis, and potential CH4 and CO2 production using aerobic and anaerobic soil incubations for 356-days at 20 °C.
Keywords:
19; 24; 25; Arctic Tundra; AWI Arctic Land Expedition; Carbon dioxide, production, CO2-C per mass carbon; Carbon dioxide, production, CO2-C per mass soil; Carbon dioxide, production rate, CO2-C per mass carbon; Carbon dioxide, production rate, CO2-C per mass soil; Carbon in Permafrost / Kohlenstoff im Permafrost; CARBOPERM; Core; Depth, description; DEPTH, soil; Event label; Flood plain; FluxWIN; Formation, turnover and release of carbon in Siberian permafrost landscapes; Gas chromatograph (7890A, Agilent Technologies, USA) with flame ionization detection (FID); Grain Size; Identification; incubation; KoPF; KUR18-P19-GRA; Kurungnakh; Laboratory experiment; Lena 2018; Methane, production, CH4-C per mass carbon; Methane, production, CH4-C per mass soil; Methane, production rate, CH4-C per mass carbon; Methane, production rate, CH4-C per mass soil; Methane emissions; permafrost carbon storage; permafrost soil; radiocarbon; Replicate; RU-Land_2018_Lena; SAM18-P24-NEI; SAM18-P25-ABC; Samoylov Islands; Sample ID; Site; SOILS; Soil sample; The role of non-growing season processes in the methane and nitrous oxide budgets in pristine northern ecosystems; Time, incubation; Treatment; Type of study; Yedoma
Type:
Dataset
Format:
text/tab-separated-values, 12844 data points
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