1. General Model Information

Name: Soil Landscape Model for Soil Organic Carbon of Bell, Bates and Gugal

Acronym: SLM


Main medium: terrestrial
Main subject: biogeochemistry
Organization level: landscape
Type of model: ordinary differential equations
Main application:
Keywords: carbon storage, ecosystem, carbon dynamics, GIS, landscape

Contact:

Jay Bell

Department of Soil Science University of Minnesota
1991 Upper Buford Circle St. Paul, MN 55108
Phone: 612 625-6703
Fax: 612 625-2208
email: jay.bell@soils.umn.edu

Author(s):

Abstract:

The Soil Landscape Model for Soil Organic Carbon of Bell, Bates and Gugal is a model currently under development as part of the USGCRP. The purpose of the model will be to predict carbon storage at the ecosystem level based on soil, vegetation and topographic parameters. It is expected that this model will aid researchers in predicting carbon dynamics under varying scenarios of climate change.

The model uses GIS thematic data layers stored in a digital database using 10 x 10m grid cells. Carbon storage will be estimated for each grid cell in order to predict spatial patterns of carbon storage at the landscape level. Input data will be soil type, vegetation cover and topographic parameters such as slope, steepness, slope curvature and landscape position. The model output will consist of cell by cell estimates of carbon storage. Cells can be aggregated to display carbon storage at the landscape level. The model will use the GISMO modeling module of ERDAS (ERDAS Inc., Atlanta). The model is currently being calibrated using several data sources. It is expected that a final functional model will be available at the end of 1993.

Author of the abstract:

CIESIN


II. Technical Information

II.1 Executables:

Operating System(s): UNIX-based workstation using x-windows

II.2 Source-code:

Programming Language(s): The model will run using the KHORDS image processing program.The model will run using the KHORDS image processing program.

II.3 Manuals:



II.4 Data:



III. Mathematical Information


III.1 Mathematics


III.2 Quantities


III.2.1 Input

Basic data inputs include digital maps of vegetative cover, and topographic parameters such as slope steepness, slope curvature, and landscape position. Model Input Data Source: Model input data can be derived from soil surveys, vegetative inventories, and digital elevation models (DEMs).

III.2.2 Output

Model output data will consist of cell by cell estimates of total organic carbon storage. Cells can be aggregated to display C-storage at the landscape level. Temporal Scale: The model describes/ predicts point-in-time estimates of C storage.

IV. References




V. Further information in the World-Wide-Web

  • Soil Landscape Model for soil organic carbon at the CIESIN database

    VI. Additional remarks

    This model could be used to examine large-scale nutrient cycling anddifferences in nutrient cycling across ecological gradients.
    Author: CIESIN
    Last review of this document by:
    Status of the document:
    last modified by
    Tobias Gabele Wed Aug 21 21:44:49 CEST 2002

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