1. General Model Information

Name: A computer assisted learning module to model the Nitrogen Cycle in Grazed Grassland

Acronym: N_CYCLE


Main medium: terrestrial
Main subject: biogeochemistry
Organization level: ecosystem
Type of model: not specified
Main application:
Keywords: nitrogen cycle, nitrogen flow, grassland ,cattle, learning module

Contact:

David Lockyer
Institute for Grassland and Environmental Research, North Wyke, Devon

David Scholefield
Institute for Grassland and Environmental Research, North Wyke, Devon

Bryan Dawson
Centre for Computer-based Learning in Land Use and Environmental Sciences (CLUES), University of Aberdeen
Phone:
Fax :
email:

Author(s):

Abstract:

Introduction N CYCLE is a computer-assisted learning (CAL) module. It is a model of the nitrogen cycle which calculates the amounts of nitrogen in the major transformations of the nitrogen cycle in grazed grassland. It presents the results as a dynamic display, with which the user can interact. The calculations relate to a full grazing season. Although designed for grassland grazed by beef cattle the program allows the user to select a dairy system or a 'cutting only' system with no grazing animals. The program is intended for use by agricultural students, scientists and advisors. Sub-models in this simulation have been derived partly from extensive studies conducted at IGER over several years and partly from other published information. The program represents in a novel way the effects of many of the relationships that govern the flow of nitrogen in a farming system. The DOS version of N Cycle is already well-established as a teaching tool. The new Windows version incorporates recent developments in the core model itself as well as simplifying the student's interactions with the model.

USING THE MODEL

There are four main components to the model:

Author of the abstract:

Centre for Computer-based Learning in Land Use and Environmental Sciences (CLUES)


II. Technical Information

II.1 Executables:

Operating System(s): IBM compatible PC (minimum 386SX) running Windows 3.1.

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

III.2.2 Output


IV. References



V. Further information in the World-Wide-Web



VI. Additional remarks


Last review of this document by: R. Patzak : 17. September 1997 -
Status of the document:
last modified by Tobias Gabele Wed Aug 21 21:44:46 CEST 2002

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