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| Titel |
Development and deployment of a water-crop-nutrient simulation model embedded in a web application |
| VerfasserIn |
Giuliano Langella, Angelo Basile, Antonio Coppola, Piero Manna, Nadia Orefice, Fabio Terribile |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250132798
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| Publikation (Nr.) |
 EGU/EGU2016-13338.pdf |
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| Zusammenfassung |
| It is long time by now that scientific research on environmental and agricultural issues spent
large effort in the development and application of models for prediction and simulation in
spatial and temporal domains. This is fulfilled by studying and observing natural
processes (e.g. rainfall, water and chemicals transport in soils, crop growth) whose
spatiotemporal behavior can be reproduced for instance to predict irrigation and fertilizer
requirements and yield quantities/qualities. In this work a mechanistic model to
simulate water flow and solute transport in the soil-plant-atmosphere continuum is
presented. This desktop computer program was written according to the specific
requirement of developing web applications. The model is capable to solve the following
issues all together: (a) water balance and (b) solute transport; (c) crop modelling; (d)
GIS-interoperability; (e) embedability in web-based geospatial Decision Support
Systems (DSS); (f) adaptability at different scales of application; and (g) ease of code
modification. We maintained the desktop characteristic in order to further develop (e.g.
integrate novel features) and run the key program modules for testing and validation
purporses, but we also developed a middleware component to allow the model
run the simulations directly over the web, without software to be installed. The
GIS capabilities allows the web application to make simulations in a user-defined
region of interest (delimited over a geographical map) without the need to specify
the proper combination of model parameters. It is possible since the geospatial
database collects information on pedology, climate, crop parameters and soil hydraulic
characteristics. Pedological attributes include the spatial distribution of key soil data such
as soil profile horizons and texture. Further, hydrological parameters are selected
according to the knowledge about the spatial distribution of soils. The availability and
definition in the geospatial domain of these attributes allow the simulation outputs at a
different spatial scale. Two different applications were implemented using the same
framework but with different configurations of the software pieces making the physically
based modelling chain: an irrigation tool simulating water requirements and their
dates and a fertilization tool for optimizing in particular mineral nitrogen adds. |
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