[AgMIP] paper in EMS for the evaluation of the current version of the STICS model

[agmip at lists.agmip.org]

Dear colleagues,

We are pleased to inform you about the publication of an evaluation of =

the current version of the STICS model (v8.2.2) in the Journal of =AB =

Environmental Modelling and Software =BB with the title "*Accuracy, =

robustness and behavior of the STICS soil--crop model for plant, water =

and nitrogen outputs: Evaluation over a wide range of agro-environmental =

conditions in France"*. It is the result of a fruitful collaboration of =

the STICS referent group and is based on a large dataset including a =

diversity of crops and environments."

You can freely download it until the 2nd of February 2015 here: =

http://authors.elsevier.com/a/1QB-q4sKhE0yKq

Abstract
/Soil--crop models are increasingly used as predictive tools to assess =

yield and environmental impacts of agriculture in a growing diversity of =

contexts. They are however seldom evaluated at a given time over a wide =

domain of use. We tested here the performances of the STICS model =

(v8.2.2) with its standard set of parameters over a dataset covering 15 =

crops and a wide range of agropedoclimatic conditions in France. Model =

results showed a good overall accuracy, with little bias. Relative RMSE =

was larger for soil nitrate (49%) than for plant biomass (35%) and =

nitrogen (33%) and smallest for soil water (10%). Trends induced by =

contrasted environmental conditions and management practices were well =

reproduced. Finally, limited dependency of model errors on crops or =

environments indicated a satisfactory robustness. Such performances make =

STICS a valuable tool for studying the effects of changes in =

agro-ecosystems over the domain explored./

Best regards !

  The Project Stics Team
http://www6.paca.inra.fr/stics_eng/

-- =

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INRA <http://www.inra.fr>
*Dominique Ripoche-Wachter*
*Ing=E9nieur d'=E9tudes*
domi at avignon.inra.fr <mailto:#>
*US1116 Agroclim, INRA Centre de recherche PACA*
T=E9l. : +33 (0)4 32 72 23 84

228, route de l'a=E9rodrome
CS 40 509
Domaine St Paul, Site Agroparc
84914 Avignon cedex 9
France
wwww.paca.inra.fr <http://www.inra.fr>

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