The cropping system models, in general. are process oriented, in which the various components of the system are modeled using empirical relationships developed between the state variables involved, as measured in short-term, small-plot field experiments. With the current level of understanding of the various processes in the soil-water-plant system, is it possible to develop mechanistic models at the whole system level for simulation and prediction of system behavior in response to external, internal stimuli like climate variability and change or else?
Empirical models can achieve the same or better accuracy as mechanistic models for predicting both suitability (i.e. species range) and productivity (i.e. species abundance). See following publication:
Article Comparing mechanistic and empirical model projections of cro...
Empirical models can achieve the same or better accuracy as mechanistic models for predicting both suitability (i.e. species range) and productivity (i.e. species abundance). See following publication:
Article Comparing mechanistic and empirical model projections of cro...
Sir, Even though we have understanding about soil-water-plant system , but to develop a model without considering the site specific requirements may lead to a wrong results. But in general to have an understanding ata broader level they may be used, if available.
I hope our knowledge about these systems (soil- water - Plant - environment - climate and its interactive processes may be inadequate to allow us to develop a mechanisitc model without considering the site specific calibration.
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