Vegetation map of the study area in the Amur-Zeya interfluve

I. G. Borisova, T. N. Veklich

DOI: https://doi.org/10.31111/geobotmap/2022.3

Full article

Annotation

In 1965 T. I. Isachenko made a scheme of geobotanical zoning for the southern part of the Amur-Zeya interfluve. She identified five geobotanical districts and subdistricts within the boundaries of zones and subzones. This zoning stays relevant to the present day. V. V. Lipatova (1969а) created the large-scale geobotanical maps of key areas for the Amur and Central districts. No other work on vegetation mapping in the Amur-Zeya interfluve was done for this area. The research goal is to make a large-scale vegetation map of the study area showing the current state and diversity of the vegetation in the Prizeya geobotanical district (Isachenko, 1965).

The study area is located in the eastern part of the Amur-Zeya interfluve, subtaiga (broad-leaved-coniferous) subzone. This area demonstrates the most industrial and agricultural development of mentioned above territory (Fig. 1). Vegetation map at a scale of 1 : 25 000 is based on field data (236 geobotanical descriptions); interpretation of Sentinel-2 satellite images was made. The classification scheme of the natural vegetation cover according to the ecological-phytocoenotic (dominant) approach was created. Mapping units are represented by groups of associations. The titles of the legend are the subzonal plant communities. Vegetation types (forest, shrub, meadow) and groups of vegetation types (mires, aquatic and coastal, meadow-shrub) are presented in the subtitles. Forests are divided into classes of formations (light coniferous, coniferous-broad-leaved and coniferous-small-leaved, broad-leaved, broad-small-leaved, small-leaved) and disturbed communities of burned areas (sparse and young forests). Transformed vegetation has been identified in the disturbed territory. The main classification criterion is the type of anthropogenic impact. The map legend contains 45 names with color and hatching (Fig. 4).

Equity participation of plant communities of the study area was presented. Disturbed territories occupy large areas of 7946 hectares (27.8 %). The forested area covers 29.7 %, including small-leaved forests (7.2 %) and sparse and young forests 8.0 %). Pine forests and their derivatives pine-oak, oak-pine, birch-pine and pine-birch forests occupy 2.8 %, oak forests — 2.5 %, the broad-small-leaved forests — 3.7 %. A significant area is occupied by meadow vegetation — 22.4 %, mire vegetation accounts for 6.7 %, dwarf birch (yernik) and willows — 4.9 %, aquatic and coastal communities — 1.4 % (Table).

The vegetation map shows the main features of vegetation cover of the Prizeya geobotanical district and allows to give a correct botanical-geographic interpretation of the territory.

Key words: Amur Region, vegetation map, ecological-phytocoenotic classification, vegetation diversity

Section: Articles

How to cite

Borisova I. G., Veklich T. N. 2022. Vegetation map of the study area in the Amur-Zeya interfluve. Geobotanical mapping 2022: 3–22. https://doi.org/10.31111/geobotmap/2022.3

Received November 9 2022

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