1. General Model Information

Name: Land Evaluation II-land use system analysis

Acronym: LAND_EVAL


Main medium: terrestrial
Main subject: biogeochemistry
Organization level: ecosystem
Type of model: not specified
Main application:
Keywords: crop, soil, farm, biophysical production potential, water-limited production potential, fertilizer requirements

Contact:

Dr.ir. P.M. Driessen
Wageningen Agricultural University
Dept. Soil Science and Geology
P.O.Box 37
NL-6700 AA Wageningen
THE NETHERLANDS
Phone: +31.8370.83575
Fax : +31.8370.82419
email: paul.driessen@bodlan.beng.wau.nl

Author(s):

Abstract:

Well diffused land-use systems with annual food and/or fibre crops are described. Dynamic simulation of biophysical production potential, water-limited production potential and fertilizer (input) requirements for target production on the basis of commonly available data on land (i.e. soil and weather), crops(s) and management/technology. General model and derived version for systems with saline water and/or soils.

Author of the abstract:
CAMASE Register of Agro-ecosystems Models

Model Parentage: SUCROS, BACROS and WOFOST.


II. Technical Information

II.1 Executables:

Operating System(s): DOS Quick BASIC compiler, coprocessor Executables are available from the author upon request (without charge)

II.2 Source-code:

Programming Language(s): Quick BASIC 4.0 Source -code is available from the author upon request (without charge)

II.3 Manuals:



II.4 Data:



III. Mathematical Information


III.1 Mathematics

Rate variables: Transpiration rate, evaporation rate, percolation, capillary rise, growth rate's of

III.2 Quantities

Rate variables: Transpiration rate, evaporation rate, percolation, capillary rise, growth rate's ofleaf, stem, root, storage organ.

Number of rate variables: > 75.

State variables: Leaf, stem, root, storage organ masses, moisture potential, water table depth.

Number of state variables: > 75.

Soil data, weather data, crop data, management data.

III.2.1 Input

Soil data, weather data, crop data, management data. Plant organ masses per interval, water depth, salinity, soil moisture content.

III.2.2 Output

Plant organ masses per interval, water depth, salinity, soil moisture content.

Time interval of simulation: 1 day.

Basic spatial unit: 1 ha.



IV. References

P.M. Driessen & N.T. Konijn, 1992.
Land Use Systems Analysis.
Dept. Soil Science & Geology, W.A.U.

V. Further information in the World-Wide-Web


VI. Additional remarks


Last review of this document by: T. Gabele: 17. 07. 1997 -
Status of the document:
last modified by Joachim Benz Wed May 10 12:46:13 CEST 2006

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