Shlapak Pavel Aleksandrovich RussiaSaratovSaratov State University, geographical faculty, department of geomorphology and geoecology, 410000, Saratov, ul. University, 59, building 4post-graduate studenthenryxiv@list.ru Author's articles Geoecological Assessment of Quality of a Surface Water of a River Basin Chardym in the Saratov Region Optimizing Land use Structure to Increase the Sustainability of Agricultural Landscapes (on the Example of the Soviet District) Studying Linear Erosion by Means of Creating a Refined Digital Elevation Model Based on SRTM (The Khvalynsk District of the Saratov Region as an Example) The Selection of the Optimal Detection Method for Agricultural Crops by Satellite Images of High Resolution (the Saratov Volga Region as an Example) The Development of an Algorithm for Constructing the Flood Zones Using Geoinformation Technologies (on the Example of the Medveditsa River Section Near Petrovsk)