卷 156, 编号 3 (2024)

Articles

Assessment of Lake Gusinoe Ecosystem Based on Macrophyte Analysis (Republic of Buryatia)

Bazarova B.

摘要

Lake Gusinoye is the largest lake in the Baikal natural territory after Lake. Baikal, around which the Gusnoozersky industrial complex is formed. In the macrophyte flora of the lake. 27 species from 21 families have been identified. The spatial structure of vegetation is determined by the morphometric characteristics of the lake's littoral zone. The northern and southern sectors of the lake are the most overgrown. Compared to previous years of research, an increase in the area of charophyte and moss thickets was revealed. The progressive overgrowing of the lake helps to maintain the processes of self-purification of the ecosystem, removes pollutants and nutrients from circulation and ensures the sustainable development of the ecosystem. The ability of the lake ecosystem to maintain the overall level of productivity due to restructuring of the structure is also evidenced by data on other communities of hydrobionts (zooplankton, zoobenthos and ichthyocenoses). The results of our studies of the chemical composition of macrophytes of Lake. Gusinoe showed, in comparison with the data of the 90s, the concentrations of chemical elements in macrophytes decreased. The recorded ecological state of the lake is determined by a complex of factors, both natural and natural (water level, temperature rise, littoral morphometry, chemical composition of water).

Известия Русского географического общества. 2024;156(3):181-193
pages 181-193 views

Study of the Geosystems of the Central Part of the Barguzinskii Range (Gisbaikalia)

Bilichenko I.

摘要

The research was carried out in the Baikal region, in its northeastern part – in the Barguzinsky ridge. This is a specially protected area of the Baikal region (Barguzinsky Reserve, which requires scientifically based environmental management planning with the study of landscape components individually and as a whole, as well as the creation of landscape maps that reflect the current state of these landscapes. The landscape structure of the ridge is dominated by alpine geosystems. In the key area, char and mountain taiga forests occupy equal areas. At the latter, vegetation was studied in detail as the most quickly responsive component to various changes. In total, about forty detailed geobotanical descriptions were made. The 1:50,000 scale landscape map was created as a result of field work, analysis of satellite images and topographic maps. At the topological level, the map displays the landscape structure of the facies rank.

Известия Русского географического общества. 2024;156(3):194-204
pages 194-204 views

Carbon Assimilation by Forests as an Ecosystem Service: Quantitative Assessment on the Example of the Trans-Baikal Territory and the Chikoy National Park

Brezgin V., Agafonov G.

摘要

The article presents the results of assessing the role of the forests of the Trans-Baikal Territory and the National Park “Chikoy” in the absorption of atmospheric carbon. The calculations were performed based on the data of the state forest registry on the species and age composition of forest stands for 2005-2021 using a technique that takes into account growth coefficients. The obtained quantitative estimates of the role of the region՚s forests in carbon sequestration confirm the need to expand the area of protected areas and ensure sustainable forest management in order to preserve this ecosystem function of the forests of Transbaikalia.

Известия Русского географического общества. 2024;156(3):205-212
pages 205-212 views

Discrete Analysis of Spatial and Temporal Variability of Geosystems of Baikal Siberia

Cherkashin A., Frolov A.

摘要

The discrete spatial and temporal variability of the geosystem characteristics at the regional level (geomes) on the territory of Baikal Siberia has been theoretically and statistically studied. The concepts and equations of a unified quantum theory aimed at a fractional description of processes and phenomena in terms of the functional state of geomes in the Hilbert space of the superposition of functions of the altitude distribution of geosystems were used. Frequency distributions by elevation gradations were determined based on the combination of an electronic geome map and a digital terrain model. Geomes differ in modal height values corresponding to their highest occurrence – optimal conditions of existence in the territory. Distributions are transformed into indicators of integrated hazard, which are statistically transformed into information functions of through quantum theory. The coefficients of variability of these functions in terms of location height are quantized, differ by geomes, which is confirmed by the results of theoretical analysis. A map of the quantum levels of spatial and temporal variability of the geomes of Baikal Siberia and a scheme of spatial and temporal transitions between quantum levels (geomes) are constructed. The methods of forecasting the dynamics and evolution of geosystems are substantiated and new procedures for calculating the quantum variability of the temporal and spatial position of geomes are proposed.

Известия Русского географического общества. 2024;156(3):205-212
pages 205-212 views