title: Integrated modelling of crop production and nitrate leaching with the Daisy model.
abstract: 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: •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.•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. •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.
authors.affiliation: Department of Agroecology, Aarhus University, Blichers Allé 20, 8830 Tjele, Denmark; Institute of Genetics and Developmental Biology, Chinese Academy of Science, Huaizhong Lu 286, 050021 Shijiazhuang, China; Sino-Danish Center for Education and Research, Zhongguancun College, 271 N 4th Ring Road, Haidian, 100080 Beijing, China.
authors.forename: Kiril
authors.initials: K
authors.lastname: Manevski
authors.affiliation: Department of Agroecology, Aarhus University, Blichers Allé 20, 8830 Tjele, Denmark; Sino-Danish Center for Education and Research, Zhongguancun College, 271 N 4th Ring Road, Haidian, 100080 Beijing, China.
authors.forename: Christen D
authors.initials: CD
authors.lastname: Børgesen
authors.affiliation: Institute of Genetics and Developmental Biology, Chinese Academy of Science, Huaizhong Lu 286, 050021 Shijiazhuang, China.
authors.forename: Xiaoxin
authors.initials: X
authors.lastname: Li
authors.affiliation: Department of Agroecology, Aarhus University, Blichers Allé 20, 8830 Tjele, Denmark; Sino-Danish Center for Education and Research, Zhongguancun College, 271 N 4th Ring Road, Haidian, 100080 Beijing, China.
authors.forename: Mathias N
authors.initials: MN
authors.lastname: Andersen
authors.affiliation: Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg, 1871 Copenhagen, Denmark.
authors.forename: Per
authors.initials: P
authors.lastname: Abrahamsen
authors.affiliation: Institute of Genetics and Developmental Biology, Chinese Academy of Science, Huaizhong Lu 286, 050021 Shijiazhuang, China.
authors.forename: Chunsheng
authors.initials: C
authors.lastname: Hu
authors.affiliation: Sino-Danish Center for Education and Research, Zhongguancun College, 271 N 4th Ring Road, Haidian, 100080 Beijing, China; Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg, 1871 Copenhagen, Denmark.
authors.forename: Søren
authors.initials: S
authors.lastname: Hansen
keywords: Calibration; Integrated modelling of crop production and nitrate leaching at field scale; Model application; Re-validation; Sensitivity analysis; Validation