Journal article
Permanganate Oxidizable Carbon Reflects a Processed Soil Fraction that is Sensitive to Management
Soil Science Society of America journal, Vol.76(2), pp.494-504
03/2012
Abstract
Permanganate oxidizable C (POXC; i.e., active C) is a relatively new method that can quantify labile soil C rapidly and inexpensively. Despite limited reports of positive correlations with particulate organic C (POC), microbial biomass C (MBC), and other soil C fractions, little is known about what soil fractions POXC most closely reflects. We measured POXC across a wide range of soil types, ecosystems, and geographic areas (12 studies, 53 total sites, n = 1379) to: (i) determine the relationship between POXC and POC, MBC and soil organic C (SOC) fractions, and (ii) determine the relative sensitivity of POXC as a labile soil C metric across a range of environmental and management conditions. Permanganate oxidizable C was significantly related to POC, MBC, and SOC, and these relationships were strongest when data were analyzed by individual studies. Permanganate oxidizable C was more closely related to smaller-sized (53-250 mu m) than larger POC fractions (250-2000 mu m), and more closely related to heavier (> 1.7 g cm(-3)) than lighter POC fractions, indicating that it reflects a relatively processed pool of labile soil C. Compared with POC, MBC, or SOC, POXC demonstrated greater sensitivity to changes in management or environmental variation in 42% of the significant experimental factors examined across the 12 studies. Our analysis demonstrates the usefulness of POXC in quickly and inexpensively assessing changes in the labile soil C pool.
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Details
- Title
- Permanganate Oxidizable Carbon Reflects a Processed Soil Fraction that is Sensitive to Management
- Creators
- Steven W. Culman - Michigan State UniversitySieglinde S. Snapp - Michigan State UniversityMark A. Freeman - Michigan State UniversityMeagan E. Schipanski - Pennsylvania State UniversityJosh Beniston - The Ohio State UniversityRattan Lal - The Ohio State UniversityLaurie E. Drinkwater - Cornell UniversityAlan J. Franzluebbers - Agricultural Research ServiceJerry D. Glover - United States Agency for International DevelopmentA. Stuart Grandy - University of New HampshireJuhwan Lee - University of California, DavisJohan Six - University of California, DavisJude E. Maul - Agricultural Research ServiceSteven B. Mirksy - Agricultural Research ServiceJohn T. Spargo - Agricultural Research ServiceMichelle M. Wander - Illinois Department of Natural Resources
- Publication Details
- Soil Science Society of America journal, Vol.76(2), pp.494-504
- Publisher
- Wiley
- Number of pages
- 11
- Grant note
- NSF at Kellogg Biological Station Ceres Trust Organic Research Initiative 1027253 / Direct For Biological Sciences; Division Of Environmental Biology; National Science Foundation (NSF); NSF - Directorate for Biological Sciences (BIO)
- Identifiers
- 99901397976201842
- Language
- English
- Resource Type
- Journal article