Skip to main content


eCommons@Cornell

eCommons@Cornell >
College of Agriculture and Life Sciences >
Crop and Soil Sciences >
Bio-char >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1813/3502
Title: Exploring Atypical Stabilization Pathways Using Pool-Based Modeling
Authors: Sohi, Saran
Yates, Helen
Lehmann, Johannes
Liang, Biqing
Gaunt, John
Keywords: Modeling
Pools
Soil organic matter
Issue Date: 2006
Abstract: Simulation models that explicitly account for the impact and interaction of soil and environmental variables can assist in predicting the accumulation of C and its rate of turnover. Relevant, verifiable (i.e. measurable) pools of Soil Organic Matter (SOM) provide the most robust basis for elucidating the underlying mechanisms. We have developed a model based around three measurable pools of SOM which can be measured using a density-based fractionation procedure, and verified by extensive chemical characterization. The model has been optimized against measurements of C and N and isotope-tracers in several soils amended with isotope-labeled organic matter. According to recent estimates black C is a much larger component of Soil Organic Carbon (SOC) in typical agricultural soils than previously assumed. Since black C may also be the most stable form of organic C in the soil, the amount of black C in the soil must impact both on the bulk rate of soil C mineralization (turnover) and the extent to which a particular management intervention can alter SOC. Until now our simulations have not accounted explicitly for the effect of black C on the dynamics of each pool. We are now examining how black C is characterized by physical location within the soil matrix, and in order to account for the influence of black C using this model affects C mineralization, and the distribution of charcoal between each of the measured fractions.
URI: http://hdl.handle.net/1813/3502
Appears in Collections:Bio-char

Files in This Item:

File Description SizeFormat
WCSS Sohi et al TP & bio-char poster.emf821.24 kBWMF ImageView/Open

Refworks Export

Items in eCommons are protected by copyright, with all rights reserved, unless otherwise indicated.

 

© 2014 Cornell University Library Contact Us