Abstract
ABSTRACTA method based on workflow technology and Open Geospatial Consortium (OGC) specification is proposed to establish a universal workflow conceptual model in the network environment. In this paper, the soil fertility evaluation conceptual model was developed as an evaluation method of soil fertility by analyzing the GIS-based fertility evaluation method and extracting the dynamic variable to verify the feasibility model. This validation process involves determining the instantiation of the conceptual model. The proposed conceptual model achieved the following goals. All data acquisition and processing functions were packaged into an OGC-compliant service model; these service models were organized into a processing chain in a certain order on the workflow platform by Petri-Net; the fertility evaluation was realized on the workflow platform by calling the processing chain. Results showed that processing functions and data can be shared in the network environment, and the network workflow model can be realized by the workflow technology. The successful implementation of fertility evaluation proved the feasibility of the network-based universal workflow conceptual model. In addition, the flexibility of our modeling method is demonstrated by reconstructing the workflow model.
Highlights
Soil quality shows significant effects on the crop yields, and the soil quality evaluation method should be further developed with the new computer technology
To find a method to automate the evaluation of soil fertility without relying on local software, we constructed a universal workflow conceptual model of the fertility evaluation based on workflow technology and Open Geospatial Consortium (OGC) specification
A network fertility evaluation model can be feasibly constructed in the workflow by analyzing fertility evaluation processes
Summary
Soil quality shows significant effects on the crop yields, and the soil quality evaluation method should be further developed with the new computer technology. Fertility evaluation data processing is complex, and the fertility evaluation work must be conducted repeatedly because of the frequent data updates, which increases the workload These works are difficult to be popularized because the professional software and technician are needed. With the recent development of the web service concept, it is required that the data and functionality should be shared in a network environment. OGC Web Services (OWS) standards facilitate the delivery, analysis, and visualization of geospatial data in the network environment. The data and functionality of network applications have already been reported in a lot of previous studies These studies proposed some methods that do not depend on the local software, a relatively complete solution has not been realized yet. It is necessary to establish functional integration implementation framework through geographic information sharing service system, aiming at solving the specific and complex problems in the network environment. A fertility evaluation conceptual model was built based on the OGC standards and workflow
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