Application of geoinformation mapping methods for urbanized territories using remote sensing data

Abstract

The article considers examples of mapping urban areas using remote sensing data (Landsat 4-5, 7, 8 and Sentinel 2) based on the QGIS open information system. On the basis of several projects carried out at the Institute of Earth Sciences of St. Petersburg State University, the main steps of remote sensing data processing and the use of GIS are shown, as well as significant differences in details, which vary depending on the purpose of the project and the study area. The authors performed data processing and analysis, as well as dynamic mapping of the city of Volgograd, a settlement with a linear urban planning with a large extent, studied the ecological state (in particular, analysis of thermal anomalies) and compiled a map of the city of Balakovo as a city-forming nuclear center of the Saratov region of the Russian Federation, analyzed the recreational areas of the cities of the Stavropol Territory, and also compiled the urbanized territories of one of the foreign states of the Asia-Pacific region. Attention is focused on the relevance and necessity of popularization in the management circles of algorithms and methods for using available software and open data to improve the efficiency of decisions made in various regions of the Russian Federation.