1. General Model Information

Name: D3R

Acronym: D3R

Main medium: terrestrial
Main subject: biogeochemistry, hydrology
Organization level: ecosystem
Type of model: compartment model
Main application:
Keywords: decomposition, surface, soil, organic matter


Clyde L. Douglas Jr.

address: --Box 370, USDA-ARS, Pendleton, OR 97801, USA
phone: +1 541 278 3292
fax: +1 541 278 3795



The model simulates the decomposition of soil organic matter.

II. Technical Information

II. Technical Information

II.1 Executables:

Operating System(s): DOS 3

II.2 Source-code:

Programming Language(s):

II.3 Manuals:

II.4 Data:

III. Mathematical Information

III.1 Mathematics

III.2 Quantities

III.2.1 Input

View Input data requirements of D3R in comparison to other Soil Organic Matter models:
These seven tables can be downloaded in Postscript Format

III.2.2 Output

View output data of D3R in comparison to other SOM - Models:

IV. References

Douglas, C.L. (Jr) & Rickman, R.W. (1992) Estimating crop residuedecompostion from air temperature, initial nitrogen content and residueplacement. Soil Sci. Soc. Am. J. 56: 272-278.

Rickman, R.. Wilkins, D., Douglas, C. & Alderman, R. (1992) Residuemanagement for erosion control. In: Columbia Basin AgriculturalResearch Ore. Agr. Expt. Stat. Spec. Rpt. 894: 14-17.

Douglas, C.L. (Jr.) & Wyoscki, D.J. (1994) Decomposition of CanolaResidue. In: Columbia Basin Agricultural Res. Annual Report. Spec.Rpt. 933. Agr. Expt. Stn. Or. St. Univ. and USDA-ARS: 56-57.

Douglas, C.L. (Jr.), Rickman, R.W. & Waldman, S.E. (1995) "D3R" Aresidue management aid. In: Columbia Basin Agricultural ResearchAnnual Report. Spec. Rpt. 946. Agr. Expt. Stn. Or. St. Univ. andUSDA-ARS: 96-98.

V. Further information in the World-Wide-Web

GCTE SOMNET Soil Organic Matter Network Database

VI. Additional remarks

Last review of this document by: T. Gabele: Tue Oct 7 1997
Status of the document:
last modified by
Tobias Gabele Wed Aug 21 21:44:41 CEST 2002

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