| Separating soil CO(2) efflux into C-pool-specific decay rates via inverse analysis of soil incubation data. | |
| | |
MedLine Citation:
|
PMID: 23337967 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
Soil organic matter (SOM) is heterogeneous in structure and has been considered to consist of various pools with different intrinsic turnover rates. Although those pools have been conceptually expressed in models and analyzed according to soil physical and chemical properties, separation of SOM into component pools is still challenging. In this study, we conducted inverse analyses with data from a long-term (385 days) incubation experiment with two types of soil (from plant interspace and from underneath plants) to deconvolute soil carbon (C) efflux into different source pools. We analyzed the two datasets with one-, two- and three-pool models and used probability density functions as a criterion to judge the best model to fit the datasets. Our results indicated that soil C release trajectories over the 385 days of the incubation study were best modeled with a two-pool C model. For both soil types, released C within the first 10 days of the incubation study originated from the labile pool. Decomposition of C in the recalcitrant pool was modeled to contribute to the total CO(2) efflux by 9-11 % at the beginning of the incubation. At the end of the experiment, 75-85 % of the initial soil organic carbon (SOC) was modeled to be released over the incubation period. Our modeling analysis also indicated that the labile C-pool in the soil underneath plants was larger than that in soil from interspace. This deconvolution analysis was based on information contained in incubation data to separate carbon pools and can facilitate integration of results from incubation experiments into ecosystem models with improved parameterization. |
| | |
Authors:
|
Christina Schädel; Yiqi Luo; R David Evans; Shenfeng Fei; Sean M Schaeffer |
Related Documents
:
|
20077617 - The "plant drosophila": e.b. babcock, the genus "crepis," and the evolution of a geneti... 17383037 - Cisgenesis strongly improves introgression breeding and induced translocation breeding ... 23452317 - Phenoscope: an automated large-scale phenotyping platform offering high spatial homogen... 19857987 - Plant developmental responses to the environment: eco-devo insights. 23098877 - Phytochemical and therapeutic potential of cucumber. 17137677 - Quantifying the physical and chemical mass transfer processes for the fate and transpor... |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2013-1-22 |
Journal Detail:
|
Title: Oecologia Volume: - ISSN: 1432-1939 ISO Abbreviation: Oecologia Publication Date: 2013 Jan |
Date Detail:
|
Created Date: 2013-1-22 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0150372 Medline TA: Oecologia Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
Department of Biology, University of Florida, Gainesville, FL, 32611, USA, cschaedel@ufl.edu. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Biological evaluation of 3-[(18)F]fluoro-?-methyl-D-tyrosine (D-[(18)F]FAMT) as a novel amino acid t...
Next Document: Plant species dominance shifts across erosion edge-meadow transects in the Swiss Alps.