1. General Model Information

Name: REgional Nitrate LEaching Model

Acronym: RENLEM2


Main medium: terrestrial
Main subject: biogeochemistry
Organization level: ecosystem
Type of model: compartment model
Main application:
Keywords: nitrate leaching, mineralisation, volatilization,nitrification, denitrification

Contact:

Ir. M.J.D. Hack-ten Broeke
DLO Winand Staring Centre (SC-DLO), Dept. Systematic Land Information,
P.O.Box 125,
6700 AC Wageningen,
THE NETHERLANDS.
Phone: +31.317.474257
Fax : +31.317.424812
email: hack@sc.agro.nl

Author(s):

Abstract:

RENLEM is a deterministic steady-state nitrate leaching model, which includes relatively simple concepts for processes like mineralisation, volatilization, nitrification and denitrification. The model considers two periods of calculation: summer (growing season) and winter (leaching period). For these two seasons the nitrate concentration of the water leaching to the ground water is calculated. The model is developed for calculating the long-term regional effects of various nitrate management scenarios for an average hydrological year.
(Source: CAMASE Register of Agro-ecosystems Models)

II. Technical Information II.1 Executables:
Operation System(s):
II.2 Source-code:
Programming language(s):
II.3 Manuals:
II.4 Data:


II. Technical Information

II.1 Executables:

Operating System(s):

II.2 Source-code:

Programming Language(s):

II.3 Manuals:



II.4 Data:



III. Mathematical Information


III.1 Mathematics


III.2 Quantities

Soil data (pH, bulk density, organic matter content), fertilizer and animal manure

III.2.1 Input

Soil data (pH, bulk density, organic matter content), fertilizer and animal manureapplication data, manure type (cattle slurry, pig slurry, poultry slurry or poultry manure), grazingmanagement, crop data (uptake, rooting depth, etc.), N-deposition and average hydrological data(moisture content, precipitation surplus). Balance terms for the N-balance per season and per soil layer (inputs and outputs)

III.2.2 Output

Balance terms for the N-balance per season and per soil layer (inputs and outputs)

and average concentrations in the soil water.

Time interval of simulation: Half year (summer-winter).


IV. References

Kragt, J.F. & W. de Vries, 1988. Onderzoek naar de effecten van mestbeperking op denitraatuitspoeling in waterwingebieden in Overijssel. 2. Gevoeligheidsanalyse en toetsing van hetmodel RENLEM. Wageningen. Stichting voor Bodemkartering. Rapport 2073.
Kragt, J.F., W. de Vries & A. Breeuwsma, 1990. Modelling nitrate leaching on a regional scale. In:
Merckx, R., H. Vereecken & K. Vlassak (eds.), 1990. Fertilization and the environment. LeuvenUniversity Press. 340-347
Kragt, J.F., W. de Vries & R. Visschers, 1990. Onderzoek naar de effecten van mestbeperking opde nitraatuitspoeling in grondwaterbeschermingsgebieden in Overijssel. 3. Toepassing vanRENLEM op zeven kwetsbaar geachte grondwaterbeschermingsgebieden. Wageningen, StaringCentrum. Rapport 38.
Kragt, J.F. & M.J.D. Hack-ten Broeke, 1991. Brief description of RENLEM. In: CEC, 1991.Nitrate in Soils, Soil and Groundwater Research Report II, EUR 13501 EN. 253-255
Kragt, J.F. & M.J.D. Hack-ten Broeke, 1991. Performance of the model RENLEM. In: CEC,1991. Nitrate in Soils, Soil and Groundwater Research Report II, EUR 13501 EN. 281-287

V. Further information in the World-Wide-Web


VI. Additional remarks


Last review of this document by: T. Gabele: 08. 07. 1997 -
Status of the document:
last modified by Joachim Benz Wed Mar 7 08:17:07 CET 2007

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