SPATIAL PATTERNS OF VEGETATION DISTRIBUTION OF FOREST CATENAE AT DIFFERENT LEVELS OF THE PRISURSKY RESERVE
- 作者: Karakulova N.G.1
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隶属关系:
- Arzamas Humanitarian and Pedagogical Institute named after A.P. Gaidar is a branch of the National Research Nizhny Novgorod State University named after N.I. Lobachevsky
- 期: 编号 2 (2025)
- 页面: 1-9
- 栏目: Articles
- URL: https://bakhtiniada.ru/2500-0578/article/view/307456
- DOI: https://doi.org/10.21685/2500-0578-2025-2-5
- ID: 307456
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The vegetation of the Prisursky Nature Reserve has been insufficiently studied. The reserve's location at the border of nemoral and taiga community types, along with significant topographical heterogeneity, creates various combinations of these communities. The aim of this study is to identify the relationship between the patterns of forest vegetation distribution and the landscape structure. The research was conducted in the Alatyrsky section of the Prisursky State Nature Reserve (Chuvashia). A geobotanical profile measuring 5.5 km was established in the basin of the River Lyulya, extending from the watershed to the floodplain. Within this profile, the additional 9 shorter profiles were built. A total of 314 geobotanical descriptions were used for analysis, conducted according to the Braun-Blanquet methodology on plots of 100, 25 and 2.5 m². To characterise the phytocenoses, the ratio of the main ecological-cenotic groups of species was analysed. The ecological space of the ecotopes was assessed using the scoring ecological scales developed by D.N. Tsiganov. Plant community types for phytocenosis characterisation were identified according to the principles of dominant classification. Forest catenae of two levels were described: the first-order catena (in the basin of the River Lyulya) and second-order catenae (its tributaries). Six types of ecotopes were identified in the first-order catena, with background and additional communities described for each. A comparative analysis of the species composition and the ratio of ecological-cenotic groups of the plant cover in the two levels of catenae was conducted. The internal heterogeneity of plant communities, related to topographical irregularities, is an inherent characteristic that should be considered when describing the plant cover of areas with complex landscape structures. Moving from the upper to the lower parts of the first-order catena, there is an increasing participation of boreal species with a decreasing role of nemoral species; in the floodplain ecotope, the proportion of nemoral species rises again. The distribution of plant cover in catenae of different scales occurs in a similar manner.
作者简介
N. Karakulova
Arzamas Humanitarian and Pedagogical Institute named after A.P. Gaidar is a branch of the National ResearchNizhny Novgorod State University named after N.I. Lobachevsky
编辑信件的主要联系方式.
Email: vertolotik@yandex.ru
Arzamas, Nizhny Novgorod Region, Russia
参考
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