TY - JOUR

T1 - Integrated modelling of crop production and nitrate leaching with the Daisy model

AU - Manevski, Kiril

AU - Børgesen, Christen Duus

AU - Li, Xiaoxin

AU - Andersen, Mathias Neumann

AU - Abrahamsen, Per

AU - Hu, Chunsheng

AU - Hansen, Søren

PY - 2016/4/26

Y1 - 2016/4/26

N2 - An integrated modelling strategy was designed and applied to the Soil-Vegetation-Atmosphere Transfer model Daisy for simulation of crop production and nitrate leaching under pedo-climatic and agronomic environment different than that of model original parameterisation. The points of significance and caution in the strategy are:i) Model preparation should include field data in detail due to the high complexity of the soil and the crop processes simulated with process-based model, and should reflect the study objectives. Inclusion of interactions between parameters in a sensitivity analysis results in better account for impacts on outputs of measured variables.ii) Model evaluation on several independent data sets increases robustness, at least on coarser time scales such as month or year. It produces a valuable platform for adaptation of the model to new crops or for the improvement of the existing parameters set. On daily time scale, validation for highly dynamic variables such as soil water transport remains challenging.iii) Model application is demonstrated with relevance for scientists and regional managers. The integrated modelling strategy is applicable for other process-based models similar to Daisy. It is envisaged that the strategy establishes model capability as a useful research/decision making, and it increases knowledge transferability, reproducibility and traceability.

AB - An integrated modelling strategy was designed and applied to the Soil-Vegetation-Atmosphere Transfer model Daisy for simulation of crop production and nitrate leaching under pedo-climatic and agronomic environment different than that of model original parameterisation. The points of significance and caution in the strategy are:i) Model preparation should include field data in detail due to the high complexity of the soil and the crop processes simulated with process-based model, and should reflect the study objectives. Inclusion of interactions between parameters in a sensitivity analysis results in better account for impacts on outputs of measured variables.ii) Model evaluation on several independent data sets increases robustness, at least on coarser time scales such as month or year. It produces a valuable platform for adaptation of the model to new crops or for the improvement of the existing parameters set. On daily time scale, validation for highly dynamic variables such as soil water transport remains challenging.iii) Model application is demonstrated with relevance for scientists and regional managers. The integrated modelling strategy is applicable for other process-based models similar to Daisy. It is envisaged that the strategy establishes model capability as a useful research/decision making, and it increases knowledge transferability, reproducibility and traceability.

KW - calibration

KW - sensitivity analysis

KW - validation

KW - re-validation

KW - model application

U2 - 10.1016/j.mex.2016.04.008

DO - 10.1016/j.mex.2016.04.008

M3 - Journal article

C2 - 27222825

VL - 3

SP - 350

EP - 363

JO - MethodsX

JF - MethodsX

SN - 2215-0161

ER -