LINGRA model a simple grass model for potential and water limited conditions

Submitted by joost.wolf on Wed, 01/25/2012 - 10:25
General
Name
LINGRA model
Program type
FST
Available since
Description

LINGRA is simple model to calculate grass growth and production under potential and water limited conditions. Simulated key processes are light utilization, leaf formation, leaf elongation, tillering and carbon partitioning to roots and shoots. Source and sink limited growth are simulated independently. Sink-limited growth is characterized by temperature-dependent leaf expansion and tiller development, whereas source-limited growth is determined by photosynthetic light-use efficiency of the canopy and th remobilization of stored carbohydrates in the stubble. At each integration step of 1 day, the available amount of carbon from the source is compared with the carbon required by the sink. The actula growth is determined by the minimum value of either sink or source.

 

 

Scale of application
field
Spatial resolution
ha
Key outputs

grass growth, grass production, water use by soil evaporation and transpiration, sink versus source limited growth

Time horizon
growth period or year
Time step of modeling
day
Required to run

FST translator which makes use of FORTRAN compiler

Required to develop

FST translator which makes use of FORTRAN compiler
 

Database I/O
n/a
Background information
User guide
Examples

LINGRA has been applied for modelling gras production for many experimental sites over Europe (see the attached User guide and articles) and for modelling grass production under climatic change (attached article by Daniel Rodriguez). 

Information on grassland experiments from PASK study and on testing of the LINGRA model can be found in an attached file (see under Download documents at Tutorial).

 

Applications & Use

See under Examples

Author(s)
Joost Wolf, Ad Schapendonk
Address
Droevendaalse steeg 1, Wageningen
Website

 Wageningen University
group Plant Production systems


http://www.pps.wur.nl/UK/