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Title: Organic Carbon Sorption and Decomposition in Selected Global Soils

Abstract

This data set reports the results of lab-scale experiments conducted to investigate the dynamics of organic carbon (C) decomposition from several soils from temperate, tropical, arctic, and sub-arctic environments. Results were used to test the newly developed soil microbe decomposition C model--Microbial-ENzyme-medicated Decomposition (MEND). We conducted a series of laboratory-scale experiments to better understand the microbial processing of organic C in response to diverse substrates and soil types, and to provide data to create an improved mechanistic model of cycling of organic C in soils. The interaction of diverse substrate types on a global suite of soils was determined in batch sorption experiments and the microbial decomposition of these compounds was determined by long-term incubation experiments. We used radiocarbon labeling approach in order to study the turnover of added substrate C through different C pools and to separately quantify the respiration of substrate C and native soil organic carbon.

Authors:
ORCiD logo ; ORCiD logo ; ; ;
Publication Date:
DOE Contract Number:  
AC5207NA27344
Research Org.:
ORNLTESSFA (Oak Ridge National Lab's Terrestrial Ecosystem Science Scientific Focus Area (ORNL TES SFA))
Sponsoring Org.:
Office of Science (SC), Biological and Environmental Research (BER). Earth and Environmental Systems Science Division
Subject:
54 ENVIRONMENTAL SCIENCES
Keywords:
soil carbon pools, respiration, mineralization, microbial biomass, fungal gene copies, incubations, 14C
Geolocation:
63.8, (-22.7
OSTI Identifier:
1389508
DOI:
https://doi.org/10.3334/CDIAC/ORNLSFA.002
Project Location:
Global soil sampling sites
DOE DataExplorer Dataset Location Google Map

Citation Formats

Jagadamma, S., Mayes, M. A., Steinweg, J. M., Wang, G., and Post, W. M. Organic Carbon Sorption and Decomposition in Selected Global Soils. United States: N. p., 2014. Web. doi:10.3334/CDIAC/ORNLSFA.002.
Jagadamma, S., Mayes, M. A., Steinweg, J. M., Wang, G., & Post, W. M. Organic Carbon Sorption and Decomposition in Selected Global Soils. United States. doi:https://doi.org/10.3334/CDIAC/ORNLSFA.002
Jagadamma, S., Mayes, M. A., Steinweg, J. M., Wang, G., and Post, W. M. 2014. "Organic Carbon Sorption and Decomposition in Selected Global Soils". United States. doi:https://doi.org/10.3334/CDIAC/ORNLSFA.002. https://www.osti.gov/servlets/purl/1389508. Pub date:Wed Jan 01 00:00:00 EST 2014
@article{osti_1389508,
title = {Organic Carbon Sorption and Decomposition in Selected Global Soils},
author = {Jagadamma, S. and Mayes, M. A. and Steinweg, J. M. and Wang, G. and Post, W. M.},
abstractNote = {This data set reports the results of lab-scale experiments conducted to investigate the dynamics of organic carbon (C) decomposition from several soils from temperate, tropical, arctic, and sub-arctic environments. Results were used to test the newly developed soil microbe decomposition C model--Microbial-ENzyme-medicated Decomposition (MEND). We conducted a series of laboratory-scale experiments to better understand the microbial processing of organic C in response to diverse substrates and soil types, and to provide data to create an improved mechanistic model of cycling of organic C in soils. The interaction of diverse substrate types on a global suite of soils was determined in batch sorption experiments and the microbial decomposition of these compounds was determined by long-term incubation experiments. We used radiocarbon labeling approach in order to study the turnover of added substrate C through different C pools and to separately quantify the respiration of substrate C and native soil organic carbon.},
doi = {10.3334/CDIAC/ORNLSFA.002},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {1}
}