Mapping the Climatogenic Dynamics Landscapes of the North-Western Caspian Region Based on Remote Sensing Data

Abstract

The article shows the possibilities of using Earth remote sensing data for mapping landscape dynamics. The use of remote sensing data in the study of landscapes is one of the methods of landscape research associated with the development of a landscape map. This method allows you to determine the state and changes in the landscape and its components. The purpose of this study is to map the landscape dynamics of the North-Western Caspian region for 1986–2015 based on Earth remote sensing data. The authors in the work relied on a systematic cartographic approach, GIS technologies and methods for digital processing of space images, as well as statistical and comparative analyses. The original images were processed using the ENVI software package. The result of the study was the development of an algorithm for compiling thematic maps based on remote sensing data; thematic maps were compiled that reflect the climatogenic dynamics of the semi-desert landscapes of the North-Western Caspian Sea. It was revealed that in the control periods of time the area occupied by various types of vegetation changed due to changes in the conditions of heat and moisture supply of the territory. Based on the spectral/vegetation indices NDVI and SAVI, within the test area, the areas occupied by various plant natural territorial complexes in the period from 1986 to 2015 were analyzed. During the period under study, an increase in the area of sands, sparse and sparse shrub vegetation, dense and powerful vegetation was noted due to a decrease in the area of «open» soil.

Acknowledgements: The work was carried out within the framework of the state task of GGNTU. Academician M.D. Millionshchikov. FZNU-2021-0002 "Assessment of the variability of agro-climatic conditions in the North Caucasus in connection with global climate change."