1. Главная
  2. Ресурсы
  3. Библиотечный поиск
Dynamics of deep soilcarbon – insightsfrom<sup>14</sup>C time seriesacross a climaticgradient Tessa Sophia van der VoortUtsav MannuFrank Hagedorn2019 год

Dynamics of deep soil carbon – insights from <sup>14</sup>C time series across a climatic gradient
статья из журнала

Полный текстСтраница публикацииПубликация в OpenAlex
Аннотация: Abstract. Quantitative constraints on soil organic matter (SOM) dynamics are essential for comprehensive understanding of the terrestrial carbon cycle. Deep soil carbon is of particular interest as it represents large stocks and its turnover times remain highly uncertain. In this study, SOM dynamics in both the top and deep soil across a climatic (average temperature ∼ 1–9 ∘C) gradient are determined using time-series (∼20 years) 14C data from bulk soil and water-extractable organic carbon (WEOC). Analytical measurements reveal enrichment of bomb-derived radiocarbon in the deep soil layers on the bulk level during the last 2 decades. The WEOC pool is strongly enriched in bomb-derived carbon, indicating that it is a dynamic pool. Turnover time estimates of both the bulk and WEOC pool show that the latter cycles up to a magnitude faster than the former. The presence of bomb-derived carbon in the deep soil, as well as the rapidly turning WEOC pool across the climatic gradient, implies that there likely is a dynamic component of carbon in the deep soil. Precipitation and bedrock type appear to exert a stronger influence on soil C turnover time and stocks as compared to temperature.
Год издания: 2019
Авторы: Tessa Sophia van der Voort, Utsav Mannu, Frank Hagedorn, Cameron McIntyre, Lorenz Walthert, Patrick Schleppi, Negar Haghipour, Timothy I. Eglinton
Издательство: Copernicus Publications
Источник: Biogeosciences
Ключевые слова: Geology and Paleoclimatology Research, Soil Carbon and Nitrogen Dynamics, Peatlands and Wetlands Ecology
Другие ссылки: Biogeosciences (PDF)
Biogeosciences (HTML)
DOAJ (DOAJ: Directory of Open Access Journals) (HTML)
Repository for Publications and Research Data (ETH Zurich) (PDF)
Repository for Publications and Research Data (ETH Zurich) (HTML)
Enlighten: Publications (The University of Glasgow) (HTML)
DORA WSL (Swiss Federal Institute for Forest, Snow and Landscape Research) (PDF)
DORA WSL (Swiss Federal Institute for Forest, Snow and Landscape Research) (HTML)
University of Groningen research database (University of Groningen / Centre for Information Technology) (HTML)
Data Archiving and Networked Services (DANS) (PDF)
Data Archiving and Networked Services (DANS) (HTML)
doi.org (HTML)