География

In this article the method of creation a cartographic model of the geoecological situation of a territory is considered. The description of maps creation and their purpose is given. The necessity of relief using as the object of mapping in the creating a geoecological map is justified. 

The article considers climatic and soil factors, that limit adoption of plant-breeding within the north semidesert. Analysis of long-term observations data in Aleksandrov Guy weather station, thematic maps (soil and landscape maps), space images and field research materials were made for this work. As the result of performed work, authors made the list of agricultural crops that could be recommended for cultivation in semi-arid term of Saratov Zavolzhie. 

In article on the basis of field researches August, 2009. The problem of pollution by manganese of waters of the Bolshoy Irgiz river in the Saratov and Samara areas, and also on a water fence of Pugachev is considered. Results of chemical-analytical works about quality of river water in a channel, flood-plain lakes, ponds and water basins of Bolshoy Irgiza, and also on a city water fence and water supply systems are resulted.

Society development is closely related to collecting of geographicallydistributed information, where the main accumulation and storage role plays atlases, and electronic atlases. The article represents work periods succession of projecting and making of Saratov region educational- local history electronic atlas. Also some aspects of atlas making methodology are disclosed. 

This article is devoted to the analyses of the role of tree-shrubbery vegetation of natural and anthropogene origin in the structure and functioning of landscapes of semi-desert Saratov Priuzenye. In this work there are used the materials of field field researches of different years, topographic and subject charts, space photographs, elements of GIS-technologies. 

Article is about the possibilities and features of application of test technologies in teaching the World Economy Geography. The author believes that test technologies are an integral part of the control of mastering of knowledge in teaching the World Economy Geography, motivations of informative activity of students, and also serve a feedback establishment between the teacher and the student. On the basis of a private experience in article recommendations about drawing up of tests are made. 

The studies of the demographic structure of the population, the characteristics of migration, the intraregional differences in the demographic situation, consideration of socio-economic ranking of the region give the grounds to draw a conclusion about the inevitability of the further process of depopulation in the region, the deterioration of the «quality» of the population. 

The article represents general concept of the «risk» and concept of geoecological risk as a one of oil-fields’ risk exploitation manifestation within the regional features of Saratov region. Also the general chart of risk estimation with emphasis on cartographical risk-analysis of oilfields with application of GIS is disclosed in the article. 

In article the specialised geoinformation system created by the author «GIS-national park “Hvalynsky”» is considered. Conceptual bases of the GIS, the maintenance of separate modular blocks, thematic structure of databases are shown. 

In article results of the comparative analysis of topology valleys complexes within the modeling range located on east macro-slope of the Privolzhsky height are shown. Comparison of the urbanized and not urbanized territories has allowed to reveal landscape analogs city valleys. The received results give the grounds for interpolation of geodynamic parameters of an erosive network with a view of development of practical recommendations about ecological optimization city planning decisions.