Decomposability of soil organic matter over time

The Soil Incubation Database (SIDb, version 1.0) and guidance for incubation procedures

verfasst von

Christina Schädel, Jeffrey Beem-Miller, Mina Azizi Rad, Susan E. Crow, Caitlin E. Hicks Pries, Jessica Ernakovich, Alison M. Hoyt, Alain Plante, Shane Stoner, Claire C. Treat, Carlos A. Sierra

Abstract

The magnitude of carbon (C) loss to the atmosphere via microbial decomposition is a function of the amount of C stored in soils, the quality of the organic matter, and physical, chemical, and biological factors that comprise the environment for decomposition. The decomposability of C is commonly assessed by laboratory soil incubation studies that measure greenhouse gases mineralized from soils under controlled conditions. Here, we introduce the Soil Incubation Database (SIDb) version 1.0, a compilation of time series data from incubations, structured into a new, publicly available, open-access database of C flux (carbon dioxide, <span classCombining double low line"inline-formula">CO2</span>, or methane, <span classCombining double low line"inline-formula">CH4</span>). In addition, the SIDb project also provides a platform for the development of tools for reading and analysis of incubation data as well as documentation for future use and development. In addition to introducing SIDb, we provide reporting guidance for database entry and the required variables that incubation studies need at minimum to be included in SIDb. A key application of this synthesis effort is to better characterize soil C processes in Earth system models, which will in turn reduce our uncertainty in predicting the response of soil C decomposition to a changing climate. We demonstrate a framework to fit curves to a number of incubation studies from diverse ecosystems, depths, and organic matter content using a built-in model development module that integrates SIDb with the existing SoilR package to estimate soil C pools from time series data. The database will help bridge the gap between point location measurements, which are commonly used in incubation studies, and global remote-sensed data or data products derived from models aimed at assessing global-scale rates of decomposition and C turnover. The SIDb version 1.0 is archived and publicly available at <a hrefCombining double low line"https://doi.org/10.5281/zenodo.3871263">https://doi.org/10.5281/zenodo.3871263</a> (Sierra et al., 2020), and the database is managed under a version-controlled system and centrally stored in GitHub (<span classCombining double low line"uri">https://github.com/SoilBGC-Datashare/sidb</span>, last access: 26 June 2020)..

Organisationseinheit(en)

Institut für Bodenkunde

Externe Organisation(en)

Northern Arizona University
Max-Planck-Institut für Biogeochemie
University of Hawaiʻi at Mānoa
Dartmouth College
University of New Hampshire
Lawrence Berkeley National Laboratory
University of Pennsylvania
Alfred-Wegener-Institut (AWI) Helmholtz-Zentrum für Polar- und Meeresforschung

Typ

Artikel

Journal

Earth system science data

Band

12

Seiten

1511-1524

Anzahl der Seiten

14

ISSN

1866-3508

Publikationsdatum

07.07.2020

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Allgemeine Erdkunde und Planetologie

Ziele für nachhaltige Entwicklung

SDG 13 – Klimaschutzmaßnahmen

Elektronische Version(en)

https://doi.org/10.5194/essd-12-1511-2020 (Zugang: Offen)