R.  A. Ulengov, 
    Antropogenesis of Natural Territorial Systems of Tatarstan Republik and their Bio-Ecological Peculiarities (On the Example of Birds),
    International Business Management,
    Volume 10,Issue 21,
    2016,
    Pages 5151-5154,
    ISSN 1993-5250,
    ibm.2016.5151.5154,
    (https://makhillpublications.co/view-article.php?doi=ibm.2016.5151.5154)
    Abstract: An assessment of ecological and economic state of municipal and natural areas of the Republic of Tatarstan. Based on the ratios of different dimensions geosystems their function, form and space habitats differ in their quality characteristic. Kama, assessed the state of geo-environmental geosystems regional level. It is proposed ornithological characteristic natural complexes allocated on the basis of the nature of the settlement of the bird population and in terms of the severity of human situation.
    Keywords: Geosystem;anthropogenic transformations;ecological and economic status;natural protection;avifauna;environmental systems