Mapping of Anthropogenic and Spontaneous (Natural) Transformation of the Geosystems of the Tunkinskaya Depression
https://doi.org/10.31857/S2587556620010045
Abstract
The article focuses on the specifics of medium-scale landscape mapping using traditional methods. For mapping studies of modern tendencies of geosystem’s functioning was chosen the part of the Tunkinskaya depression and the mountains surrounding it (Southwestern Cisbaikalia). A landscape map was created in the scale of 1 : 100000. It reflects the differentiation of the territory into categories of landscape structures according to the types of zonal-altitude-belt conditions of the natural environment. The conditions differ in morphological and phytocenotic properties, as well as in anthropogenic transformation. The main factors of landscape discreteness are the geomorphological features of the surface structure of mountain-valley territories. The dynamics of the geosystem’s functioning reflects the complexes with natural vegetation and their derivatives biocenoses formed in the process of agricultural and pyrogenic transformation. The variable states include complexes formed in river valleys as a result of the manifestation of debris flows activity. The result is an image of the current state of geosystems. This is the scientific basis for predicting the development of geosystems, taking measures to optimize environmental management and addressing the risk of hazardous natural processes.
About the Author
Zh. V. Atutova
Sotchava Institute of Geography, Siberian Branch, Russian Academy of Science
Russian Federation
Irkutsk
Russian Federation
Irkutsk
References
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- The main factor in the anthropogenic transformation of the geosystems of the bottom of the Tunkinskaya depression is an agricultural activity, whereas of the slopes these are the periodically occurring forest fires.
- The main drivers of the geosystems’ natural dynamics in the mountain framing of the depression are modern exogenous processes; in our case, that is mudflow activity.
- Initially, there were 14 groups of facies in the landscape structure of the key site. However, most of them are not presented due to anthropogenic impact but transformed.
- Representing natural states of the groups of facies in the legend allows indicating the equilibrium state the anthropogenically transformed complexes would tend to after the stop of economic activities.
Review
For citations:
Atutova Zh.V. Mapping of Anthropogenic and Spontaneous (Natural) Transformation of the Geosystems of the Tunkinskaya Depression. Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya. 2020;(1):138-146. (In Russ.) https://doi.org/10.31857/S2587556620010045
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