HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Molina, J. A. E. Articles by Larson, W. E. Search for Related Content PubMed Articles by Molina, J. A. E. Articles by Larson, W. E. Agricola Articles by Molina, J. A. E. Articles by Larson, W. E.

NCSOIL, A Model of Nitrogen and Carbon Transformations in Soil: Description, Calibration, and Behavior¹

ABSTRACT

NCSOIL is a submodel of a larger program NTRM (nitrogen-tillage-residue management). NCSOIL computes short-term dynamics of carbon and nitrogen organics, ammonium, and nitrate which result from the processes of residue decomposition, mineralization, immobilization, nitrification, and denitrification. Both total and isotopic nitrogen are considered. NCSOIL is built on the concept of catenary sequence of heterogenous substrates. The active soil organic phase is divided in two pools which are dynamic, defined by their kinetic rate constants and their position in the model structure. Residues are defined in terms of their chemical or morphological nature. A double feedback loop in the carbon flow adjusts the rate of residue decomposition and the efficiency factor to the availability of inorganic nitrogen. NCSOIL was calibrated with, and its behavior contrasted against published and unpublished data from an experiment reported by Chichester et al. in Soil Science (see p. 455, vol. 120): "Relative Mineralization Rates of Indigenous and Recently Incorporated 15-N labeled Nitrogen." Experimental results of the Chichester et al. experiment were discussed in view of computer-simulated flow rates and substrate concentrations.

¹ Contribution from the Dep. of Soil Science, Univ. of Minnesota, St. Paul, MN 55108, and the Soil and Water Management Research Unit, NCR, ARS, USDA. Minnesota Agric. Exp. Stn. Paper no. 12,042.

² Professor of Soil Microbiology, Univ. of Minnesota; Research Chemist, USDA-ARS, and Professor, Univ. of Minnesota; Soil Scientist, USDA-ARS, and Associate Professor, Univ. of Minnesota; Soil Scientist, USDA-ARS, Temple, TX; and Professor and Head, Dep. of Soil Science, Univ. of Minnesota, respectively.

Received for publication December 16, 1981. Accepted for publication September 4, 1982.

This article has been cited by other articles:

				S. Abiven, S. Menasseri, D. A. Angers, and P. Leterme A Model to Predict Soil Aggregate Stability Dynamics following Organic Residue Incorporation under Field Conditions Soil Sci. Soc. Am. J., January 11, 2008; 72(1): 119 - 125. [Abstract] [Full Text] [PDF]

				J. D. Jabro, A. D. Jabro, and R. H. Fox Accuracy and Performance of Three Water Quality Models for Simulating Nitrate Nitrogen Losses under Corn. J. Environ. Qual., July 1, 2006; 35(4): 1227 - 1236. [Abstract] [Full Text] [PDF]

				J. Beraud, P. Fine, U. Yermiyahu, M. Keinan, R. Rosenberg, A. Hadas, and A. Bar-Tal Modeling Carbon and Nitrogen Transformations for Adjustment of Compost Application with Nitrogen Uptake by Wheat J. Environ. Qual., March 1, 2005; 34(2): 664 - 675. [Abstract] [Full Text] [PDF]

				C. J. Kucharik and K. R. Brye Integrated BIosphere Simulator (IBIS) Yield and Nitrate Loss Predictions for Wisconsin Maize Receiving Varied Amounts of Nitrogen Fertilizer J. Environ. Qual., January 1, 2003; 32(1): 247 - 268. [Abstract] [Full Text] [PDF]

				F. Walley, T. Yates, J.-W. van Groenigen, and C. van Kessel Relationships Between Soil Nitrogen Availability Indices, Yield, and Nitrogen Accumulation of Wheat Soil Sci. Soc. Am. J., September 1, 2002; 66(5): 1549 - 1561. [Abstract] [Full Text] [PDF]

				B. C. Liang, X. L. Wang, and B. L. Ma Maize root-induced change in soil organic carbon pools Soil Sci. Soc. Am. J., May 1, 2002; 66(3): 845 - 847. [Abstract] [Full Text] [PDF]

				J.M. Powell and Z. Wu Nitrogen-15 Labeling of Dairy Feces and Urine for Nutrient Cycling Studies Agron. J., September 1, 1999; 91(5): 814 - 818. [Abstract] [Full Text]