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

Submitted by joost.wolf on
    LINGRA model
    Program type
    Available since

    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
    Spatial resolution
    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
    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
    Background information
    User guide

    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

    Joost Wolf, Ad Schapendonk
    WUR, Plant Production Systems, P.O. Box 430, 6700 AK Wageningen, The Netherlands

     Wageningen University
    group Plant Production systems