Академическое издательство «Гео»

Keywords: vegetation, surface water, snow cover.



GEOGRAPHY AND NATURAL RESOURCES, 2016, № 6, p. 93-98

Current state of the Listvyanka settlement environment according to the studies of vegetation, surface water and snow cover

I.B. VOROBYEVA1,2, N.V. VLASOVA1, O.V. GAGARINOVA1, S.A. MAKAROV1, A.P. SOFRONOV1, and M.S. YANCHUK1

1 V. B. Sochava Institute of Geography SB RAS, 664033, Irkutsk, Ulan-Batorskaya str., 1, Russia, vlasova@irigs.irk.ru, whydro@irigs.irk.ru, makarov@irigs.irk.ru, alesofronov@yandex.ru
2 Irkutsk Scientific Center SB RAS, 664033, Irkutsk, Lermontova str., 134, Russia, irene@irigs.irk.ru

The results of research carried out in 2016 in winter and summer seasons, considering the current conditions of Listvyanka settlement and its surroundings, are represented. It has been established that geomorphological processes (landslides, earth flows, creep, erosion, debris flows of rare repeatability, and abrasion) are developing within the study area. The processes of peat formation and permafrost heaving are observed on the bottoms of creek valleys. The study of the vegetation showed that there is no irreversible degradation of forests in the settlement’s surroundings, and given that the area is not affected by wildfire the regrowth of indigenous larch and conifer and pine forests will be possible. In the settlement and on roadsides, we found cultural garden plants incorporated into the local wild plant communities. The identified general patterns of present-day vegetation distribution evidence the domination of secondary communities in the forest vegetation. Results of the snow cover analysis showed minor changes in the acid-alkaline conditions. It was found that the snow cover in the village and in the lake basin contains NH4+, Cl, and PO43 ions. The highest levels of particulates are observed in topmost parts of the valley. Hydrological studies and data of chemical water analysis showed the excess of ammonia nitrogen content (on 2-fold average versus the permissible limits adopted for Lake Baikal) in the water of the Krestovka River and Banny creek, where content of suspended solids exceeding the allowable values was also marked. Higher levels of particulates in surface waters are associated with seasonal high water stand (after rainfalls), with disturbed surfaces of watersheds, and due to transformations in watercourses channels.

Keywords: vegetation, surface water, snow cover.

DOI: 10.21782/GiPR0206-1619-2016-6(93-98)

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