Application of the algorithm for calculating the boundaries of built-up areas from satellite images to calculating the areas of flooded land and the environmental potential of the territories of settlements

Abstract

Abstract The processes of flooding of the territory of settlements cause significant economic damage to the national economy. Up-to-date space information provides research on flooding over large areas. Analysis of the dynamics of flooding in the Khabarovsk Region for 2016-2019 using remote sensing methods and statistical data analysis showed that the optimal software product for processing multi-time satellite images is the MapInfo Professional GIS application. It is established that the dynamics of the areas of flooded land in settlements has similar trends, significantly differing in quantitative indicators. The most favorable year was 2017, when the least amount of land was affected by flooding. In 2019, the amount of flooded land was the maximum. 2016 and 2018 occupy an intermediate position. The proportion of flooded land was the highest in large and medium-sized cities, the lowest in rural settlements, and the small towns occupied an intermediate position due to the landscape and geographical features of the research objects. The relative decline in the value of the territory environmental potential (EFP) was also the highest in large and medium-sized cities, and the lowest in rural areas. According to the years, the increase in the temporary decline in EFP due to flooding and withdrawal from economic use of land is as follows: 2017-2016-2018-2019, which is due to the dynamics of the hydrological and climatic characteristics of these years.