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Use of carbon-13 and carbon-14 to measure the effects of carbon dioxide and nitrogen fertilization on carbon dynamics in ponderosa pine
Author(s):Paul, Eldor A.; Ball, J. T.; Johnson, D. W.; Cheng, W.; Haile-Mariam, Shawel
Date Issued:2000-11
Format:born digital; articles
Soil C sequestration in predicted, future elevated CO2 environments will be important to atmospheric CO2 levels, soil tilth, and fertility. An elevated CO2 study with ponderosa pines (Pinus ponderosa Laws) grown in chambers ...
Fractionation and long-term laboratory incubation to measure soil organic matter dynamics
Author(s):Paul, Eldor A.; Wright, S.; Collins, H. P.; Haile-Mariam, S.
Date Issued:2008-03
Format:born digital; articles
Soil organic matter (SOM) in agricultural soils comprises a significant part of the global terrestrial C pool. It has often been characterized by utilizing a combination of chemical dispersion of the soil followed by ...
Carbon allocation, belowground transfers, and lipid turnover in a plant–microbial association
Author(s):Paul, Eldor A.; Schultz, David J.; Calderón, Francisco J.
Date Issued:2012-09
Format:born digital; articles
Radioactive tracers were used to study the C allocation to coarse and fine roots, aboveground plant tissues, mycorrhizal lipids, belowground respiration, and soil in a mycorrhizal association. Sorghum bicolor (L.) Moench ...
Chemical differences in soil organic matter fractions determined by diffuse-reflectance mid-infrared spectroscopy
Author(s):Collins, Harold P.; Reeves, James B.; Calderón, Francisco J.; Paul, Eldor A.
Date Issued:2011-03
Format:born digital; articles
We performed mid-infrared (MidIR) spectral interpretation of fractionated fresh and incubated soils to determine changes in soil organic matter (SOM) chemistry during incubation. Soils from four sites and three depths were ...
Terrestrial carbon pools: preliminary data from the Corn Belt and Great Plains regions
Author(s):Hickman, Michael V.; Turco, Ronald F.; Huggins, David R.; Halvorson, Ardell D.; Lyon, Drew J.; Frye, Wilbur W.; Blevins, Robert L.; Cole, C. Vernon; Paul, Eldor A.; Collins, Harold P.; Paustian, Keith H.; Frey, Serita D.; Monz, Christopher A.; Elliott, Edward T.; Burke, Ingrid C.
Date Issued:1994
Format:born digital; articles
Soil organic matter is recognized as an important component of soil quality (Granatstein & Bezdicek, 1992; Arshad & Coen, 1992). In mineral soils, many properties associated with soil quality, including nutrient mineralization, ...
Measuring and understanding carbon storage in afforested soils by physical fractionation
Author(s):Paustian, K.; Paul, Eldor A.; Gregorich, E. G.; Morris, S. J.; De Gryze, S.; Lenders, S.; Callewaert, P.; Six, J.
Date Issued:2002-11
Format:born digital; articles
Forested ecosystems have been identified as potential C sinks. However, the accuracy of measurement and understanding of the underlying mechanisms for soil organic C (SOC) storage in forested ecosystems needs to be improved. ...
Greenhouse gases in intensive agriculture: contributions of individual gases to the radiative forcing of the atmosphere
Author(s):Harwood, Richard R.; Paul, Eldor A.; Robertson, G. Philip
Date Issued:2000-09-15
Format:born digital; articles
Agriculture plays a major role in the global fluxes of the greenhouse gases carbon dioxide, nitrous oxide, and methane. From 1991 to 1999, we measured gas fluxes and other sources of global warming potential (GWP) in cropped ...