Annotation

Purpose: сto create geometric networks (GN) and carry out network analysis (NA) based on spatial data of irrigation systems (IS). 

Materials and methods. The initial data for GN were previously developed geoinformation database and layers in *.shp format obtained as a result of digitization. ArcGIS DeskTop software version 10.4.1 was used. NA was performed using the Network Analyst module. 

Results. Two file databases with geometric networks of spatial objects of the Azov IS (main canal and inter-farm distribution network) and the Ponuro-Kalinin IS (distribution and collector and drainage network) were created. NA was performed on their basis, that is, a set of network elements was determined in accordance with the specified conditions. The result was the creation of a sample for further processing and analysis of the obtained data sets. Options for conducting NA were considered using specific examples. One of the most common tasks of NA is to search for all network elements based on the flow direction. The combination of flags and barriers (NA functions) on the GS, as well as visualization of the results of the selection by the specified parameters, allow creating complex and composite selections based on the tasks specific to melioration. 

Conclusions. The use of NA can be effective for solving various problems in reclamation when assessing the quantitative characteristics of the IS objects and for establishing the relationships between structures, which in turn can become the basis for calculating the indicators of the significance of structures in order to determine the order of priority when planning the IS objects. But to create the correct GS, the initial data must correspond to a certain data structure, the main property of which is the connectivity of these objects. In this regard, previously created GIS layers may require significant adjustment.

For quoting

Ryzhakov A. N. The use of network analysis of geometric network data in the spatial database of irrigation systems (using the example of the Azov and Ponuro-Kalinin irrigation systems). Ways of Increasing the Efficiency of Irrigated Agriculture. 2025;96(2):64–82. (In Russ.).

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