Vegetation map of Norsky nature reserve (Amur Region)

2020 ◽  
pp. 24-38
Author(s):  
I. G. Borisova

The Norsky State Nature Reserve is located in Selemdzhinsky district of the Amurskaya oblast. Its area is 211 168 ha. Currently the flora of the Norsky Nature Reserve is studied in details. A species list has been published and an analysis of the flora has been made (Starchenko, Chuvasheva, 1993; Veklich, 2009). The vegetation cover is poorly studied; so far no geobotanical map of the Reserve has been compiled. Only the overview map (scale 1 : 2 500 000) of the vegetation of the Amur basin (1969) gives an idea of the vegetation as a whole. The climatic characteristics of the territory and the complex relief determine the diversity of plant habitats and their communities. The climate of the Norsky Reserve is continental with monsoon features and even ultracontinental (after A. I. Kaigorodov (1955). The modern relief of the Reserve includes wide floodplains of Nora and Selemdzha rivers, accumulative delta-terraces plain, Norskaya accumulative denudation plain (Geomorphologiya..., 1973) and hills. According to the latest botanical and geographical zoning of the Amurskaya oblast, the Norsky Reserve belongs to the Mamynskiy and Ulmsko-Aldikonskiy districts of the Turan-Mamyn province of the Manchurian subdistrict of the East Asian area (Borisova,Starchenko, 2018). The province belongs to southern taiga with some elements of nemoral forests (Quercus mongolica, Tilia amurensis and etc.) along the valleys of Selemdzha River and its major tributaries. The southern taiga includes different larch forests (often disturbed), derived birch-larch forests with Pinus sylvestris, Picea ajanensis and Abies nephrolepis. The presence of nemoral species in forest cenoses increases in the direction from north to south. A province peculiarity is the wide distribution of larch peatmoss forests, swamps and wet meadows. The scientific-reference typological map of vegetation on a medium scale (1 : 300 000) was compiled for the Norsky Nature Reserve for the first time. It shows spatial patterns of vegetation distribution in connection with the natural features of the territory (Fig. 5). The vegetation map legend is based on an ecologic and phytocoenotic classification. A zonal distribution of plant communities is presented in the legend. Plant communities are divided into some categories: dark-coniferous, light-coniferous and derived forests, which are represented as formations. The main cartographic units are groups of associations and their various combinations. The legend shows the vegetation of floodplains, rocks, and disturbed areas. Vegetation divisions are represented on the vegetation map by seventeen colors and one extra scale sign. All symbols have their own serial number, which is marked in the map legend. The largest areas on the territory of the Reserve are occupied by larch forests — 42 % (Fig. 6). The forested territory as a whole occupies 36.5 %, of which the largest areas are rhododendron larch (9.7 %) and floodplain (9.5 %) forests. Ledum larch and moss-shrub forests occupy 5.7 %. Larch mixed-grass-shrub forests cover some small areas (2.0 %). Sub-taiga larch forests with nemoral grasses and often with oak and black birch trees occupy 0.6 %. Pine and larch-pine forests extend 1.3 % of the Reserve’s area. Fir-spruce forests on watersheds have limited distribution — about 1 %. They are a chain of ecologic-dynamic series on floodplain occupying 2.7 % of the Reserve’s area. To conclude, the vegetation cover of the Norsky Nature Reserve reflects the zonal and provincial features of the territory.

2018 ◽  
pp. 120-136 ◽  
Author(s):  
E. A. Volkova ◽  
V. N. Khramtsov

Rather large forests, typical of the southern taiga subzone are preserved within the boundaries of St. Petersburg. They include a wide variety of plant communities with some rare species. This article is devoted to the area located in the southern part of the city and designed as a nature reserve. A large-scale map of actual vegetation of the projected reserve was composed; it shows the diversity of plant communities and their distribution. The map legend consists of 75 main units; and the usage of supplementary symbols helps to map 122 units. Areal analysis of all types of plant communities is carried out on the basis of the vegetation map. Typical and the most valuable vegetation objects were identified.


1995 ◽  
pp. 58-66
Author(s):  
N. M. Kalibernova

The fragment of the legend of the map concerning the vegetation of flood- plains and river-valleys in the subzones of northern and southern deserts is presented in the article. The map is compiled in Department of Vegetspon Geography and Cartography of Komarov Botanical Institute by a large team of botanists-geographers of the former USSR. The nature environments determining the development of vegetation of river-valleys in arid climate are conditioned by the intrazonal factors (alluvial and flood processes) at the background of natural zonal factors. Contrasts of environments and corresponding plant communities manifest themselves first of all. Mineralization of ground waters, salinity of soils, including the alluvial ones, are of essential importance. The practice of vegetation mapping of unstable habitats, to which floodplain landscapes belong, has shown that units of phytocoenological classification is of little use for this purpose. The heterogeneity of vegetation, consisting of short-term unstable serial communities generates a need for typification of space combinations of such phytocoenoses. For this purpose it is convenient to use generalized ecological-dinamic series, including plant communities of all levels within the limits of definite segment of valley. These series are the mapping units on the map. The vegetation of the first terrace is also nessecary to include in a single series with flood-plain vegetation because it has supplementary influence of ground waters. The higher divisions of the legend are based on zonal characters: vegetation of valleys in northern, middle and southern deserts. 13 numbers are used to show the vegetation cover of flood-plains and valleys. Additional 7 numbers are used for the out-of-valley meadow vegetation. The content is enriched by using of the letters by the numbers showing the geographic variants of series and ciphers for combination of series and out-of-series communities. The text legend is supplemented by the matrix (table), showing the subordination of subtitles, zonal position and geographic distribution of divisions. The types of series in the matrix are listed with indication of the main dominant species that gives the additional information on the legend divisions. The author's conclusion is that valley vegetation reveals clearly the zonal features, correlating with zonal (desert) vegetation.


Koedoe ◽  
1996 ◽  
Vol 39 (1) ◽  
Author(s):  
L.R. Brown ◽  
G.J. Bredenkamp ◽  
N. Van Rooyen

After classifications and descriptions of the southern and western sections of the Borakalalo Nature Reserve were published, a study on the phytosociology of the northern part was initiated. The study is aimed at providing an ecological basis for establishing an efficient wildlife management programme for the reserve. From a TWINSPAN classification, refined by Braun-Blanquet procedures, 15 plant communities, which can be grouped into six major plant communities, were identified. Descriptions of the various plant communities, include diagnostic species, prominent species and less conspicuous species of the tree, shrub, forb and grass strata. A hierarchical classification, description of the plant communities and a vegetation map are presented.


2019 ◽  
pp. 57-67
Author(s):  
T. A. Sokolova

During an ecological expertise the vegetation of Tuzla Spit and Tuzla Island, located in the middle part of the Kerch Strait (Fig. 1), was studied. This area is unique in terms of biological diversity and a presence of rare species (Ermolaeva et al., 2018). The study is based on 150 geobotanical relevés. Field data, topographic maps, and high-resolution satellite images were used in the vegetation mapping. The total area of the study is 383 hectares. There are the following hierarchical levels in the legend to the vegetation map: types of vegetation and classes of associations. A mapping unit is an association described according to the Braun-Blanquet system (Braun-Blanquet, 1964). The highest divisions of the legend are the types of vegetation: aquatic, coastal-aquatic, halophytic, psammophytic, steppe; they are given according to the ecological-phytocoenotic classification. Within the types of vegetation, classes of associations are given according to the ecological-floristic classification. 26 main numbers of the legend display the vegetation cover on the map. Geobotanical map reflects the state of vegetation in 2015 (Fig. 2). The vegetation of the island is heterogeneous. Plant communities as narrow stripes replace each other depending on the degree of moisture, salinity and orography. The sea currents have a great influence on the vegetation. In the southern part of the Taman Bay, suspension flows are directed from the South to the North and round the island, which leads to the “washing-up” of the southeastern part of the island represented by shallow waters and estuaries. It is occupied mainly by halophytic vegetation, the main dominants of plant communities are Juncus maritimus, Phragmites australis, Puccinellia distans, Bassia hirsuta, Salicornia pe­rennans, S. prostrata, Suaeda salsa, Elaeagnus angustifolia, Elytrigia elongata, Tripolium vulgare. The northwestern part of the strait is occupied by the area of jet streams of suspensions coming from the North to the South from the Sea of Azov. This caused the accumulation of sand-shell material in the northern and northwestern parts of the island forming raised areas co­vered by psammophytic and steppe communities. The main dominant species here are Crambe maritima var. pontica, Cakile euxina, Eryngium maritimum, Lactuca tatarica, Salsola tragus, Leymus sabulosus, Artemisia arenaria, Gypsophila perfoliata. As a result of the transport crossing construction, the vegetation cover was heavily transformed. The vegetation map of Tuzla Spit and Island for 2019 shows the changes that have occurred — the drainage of the territory and the reduction of the vegetated area (Fig. 3). Distribution of weed species, in particular Ambrosia artemisiifolia, is noted. The remained vegetation in the southern part of the Tuzla Spit and the southern part of the Tuzla Island has a great nature conservation value; there are unique plant communities and rare plant species listed in the Red books of different ranks (Red..., 2007, 2008, 2015): Cakile euxina, Crambe maritime, Glaucium flavum, Euphorbia paralias, E. peplis, Eryngium mari­timum, Astrodaucus littoralis, Asparagus maritimus, Centaurea arenaria, Argusia sibirica, Astragalus varius, Verbascum pinnatifidum, Leymus racemosus subsp. sabulosus, Secale sylvestre. There is an obvious need to organize a specially protected natural area in these areas.


2015 ◽  
pp. 94-119 ◽  
Author(s):  
I. A. Lavrinenko

A typological scheme of territorial units of vegetation (TUV) developed on the basis of the large-scale map of theKolguev Island is presented. Four basic rank typological units (division, class, group and type) define TUV positions in the hierarchical system of vegetation cover. The concepts of diagnostic syntaxon and combination of diagnostic syntaxa that occur exclusively or primarily within these typological units are introduced. Prodromus of the Kolguev Island vegetation consists of 42 syntaxa (association / subassociation / type of community). 38 types of TUV from 22 groups (8 homogeneous and 14 heterogeneous – serial and ecological ranks, complexes and combinations), assigned to 15 classes and 3 divisions are allocated on the vegetation map in 1 : 50 000 scale. The categories of different rank can be used as dynamic elements of the map legend. This approach gives us a possibility to combine the syntaxonomic diversity of plant communities and typology of TUV.


Koedoe ◽  
2005 ◽  
Vol 48 (2) ◽  
Author(s):  
L.R. Brown ◽  
H. Marais ◽  
S.P. Henzi ◽  
L. Barrett

The Blyde Canyon Nature Reserve (BCNR) was identified as an important conservation area due to of its extraordinary diversity of plant species. Plant communities represent ecosystems and form the basis of any management plan for natural areas. If these ecosystems and their different potentials are unknown, they cannot be managed successfully. Baboons exploit diverse habitats including human environments where they often cause damage to crops and forest plantations. Baboons are regarded as particularly problematic residents of protected areas as conventional fences do not readily enclose them, their eclectic diets allow them to benefit from a range of agricultural endeavours, and they are behaviourally opportunistic. Thus as a first step to implementing a conservation policy to manage chacma baboons in the BCNR, it was necessary to have some understanding of their exploitation of natural habitats adjacent to areas where they do cause problems. Although a broad vegetation map of the BCNR exists, no detailed vegetation studies have been conducted on the largest part of the reserve. It was therefore decided to ndertake a detailed vegetation study of the home range of a single baboon troop within the Bourke’s Luck section of the BCNR. From a TWINSPAN classification, refined by Braun-Blanquet procedures, 13 plant communities, which can be grouped into seven major groups, were identified. A classification and description of these communities, as well as a vegetation map are presented. Data collected as part of this study also revealed that the baboons show preference to certain communities whilst avoiding others. These have important consequences in terms of the management strategies followed on the reserve.


Koedoe ◽  
1995 ◽  
Vol 38 (2) ◽  
Author(s):  
L.R. Brown ◽  
G.J. Bredenkamp ◽  
N. Van Rooyen

As part of a vegetation survey programme for conservation areas in South Africa, the plant communities of the western section of the Borakalalo Nature Reserve were investigated. From a TWINSPAN classification, refined by Braun-Blanquet procedures, 19 plant communities, which can be grouped into eleven major groups, were identified. A classification and description of these communities, some of which have a karoo affinity, are presented. The diagnostic species, as well as the prominent and less conspicu- ous species of the tree, shrub, herb and grass strata are outlined. A vegetation map is included.


Bothalia ◽  
2019 ◽  
Vol 49 (1) ◽  
Author(s):  
Helga Van der Merwe ◽  
M. Timm Hoffman

Background: Akkerendam Nature Reserve is the second oldest proclaimed municipal nature reserve in the Northern Cape, yet to date no vegetation map has been produced. The possible expansion of the reserve is under consideration.Objectives: To produce a vegetation map, classification and description of the vegetation of the reserve and proposed expansion area, and assess how the vegetation has changed over the past century.Method: Braun Blanquet methodology was used to produce a vegetation map. To quantify vegetation change, (1) relevés (a plot of phytosociological data) composed from Acocks’ species lists, recorded in 1954 and 1956, were compared with the phytosociological table, and (2) recent repeat photographs (2016) were compared to four images taken by Pole Evans (ca. 1920).Results: Three plant communities were identified within the reserve and expansion area; however, four subcommunities are only found in the proposed expansion area. Relevés compiled from Acocks’ species lists were absorbed into the phytosociological table indicating that no significant vegetation change has taken place in the last approximately 60 years. This study found 222 species in common with Acocks’ species lists; however, he did not list the alien invasive species Prosopis glandulosa. Comparison of repeat photographs with images taken nearly a century earlier suggests that, except for the impact of recent fires, the composition remained relatively similar.Conclusion: The phytosociological approach adopted has provided a map of the vegetation units of the study area, while the historical comparisons indicate that the vegetation of Akkerendam Nature Reserve has not undergone significant change over the last 100 years.


2007 ◽  
pp. 61-88 ◽  
Author(s):  
N. I. Makunina ◽  
T. V. Maltseva ◽  
L. P. Parshutina

The paper deals with the two main types of forest-steppe landscape of Tuva (the South-Central Siberia), i. e. the moderately warm forest-steppe of Eastern Tuva (the hemiboreal-forest-steppe altitudinal belt) and the moderately cold medium-height mountain forest-step­pe of Western Tuva. The first type of the forest-steppe forms a disconti­nued belt at an altitude of 800 to 1200 m above sea level. Its vegetation cover is typical of South-Siberian mountain forest-steppe. Plain areas are covered with meadow steppes of the ass. Pulsatillo patentis—Carice­tum pediformis nov. subass. stipetosum which give way to steppes of the ass. Pulsatillo turczaninovii—Carice­tum pediformis nov. on steep southern slopes. Stony sites are occupied by steppes of the ass. Colurio-Carice­tum nov. subass. artemisietosum. All the steppe associa­tions belong to the order Helictotrichetalia schelliani of the Central-Asian steppe class Cleistogenetea squarro­sae. Larch forests of the ass. Anemono-Laricetum Ermakov 1995 subass. phleumetosum nov. and A.-L. subass. calamagrostietosum nov. (the class Rhytidio-Laricetea), surrounded by steppe meadows of the ass. Adenophoro-Caricetum nov., dominate the northern slopes. The second type, the moderately cold forest-steppe, is characteristic of the western regions of Tuva, more arid and continental, which lay in the rain shadow of the mountain systems Altai and Sayan. The conditions required for forest vegetation appear at an altitude of 1400 m above sea level and the forest-steppe landscapes are located within the altitudinal ranges of 1400 to 1700 m a. s. l., so the forest-steppe of Western Tuva is colder than that of Eastern Tuva. Its vegetation cover represents a combination of the transformed vegetation of the steppe and the typical forest-steppe belts in the southern and the northern slopes, respectively. The southern slopes are dominated by bunchgrass (ass. Colurio-Caricetum nov.) and stony (ass. Euphorbio-Elytrigietum nov., Androsaco-Elytrigietum nov.) step­pes; the latter association is exclusively typical of the type of forest-steppe discussed. Vegetation of the northern slopes is mainly composed of larch forests of Anemono-Laricetum subass. phleumetosum nov. and A.‑L. subass. rhododendretosum nov. The herba­ceous plant communities observed on the northern slopes are meadow steppes and steppe meadows of the associations Adenophoro-Caricetum, Pulsatillo-Carice­tum subass. potentilletosum, Aconogono-Caricetum nov. The latter two units are also restricted to the moderately cold forest-steppe, as well as Anemono-Laricetum rhododendretosum. The total syntaxonomic diversity of mountain forest-steppes of Tuva principally comprises 8 asso­ciations and 9 subassociations. All of them are des­cribed anew respectively.


2021 ◽  
Vol 895 (1) ◽  
pp. 012022
Author(s):  
E S Lonkina ◽  
T A Rubtsova ◽  
V A Gorelov

Abstract The article presents the information about the current state of the larch forests of the “Bastak”. State Nature Reserve The area, ecological and cenotic conditions of growth are determined, the classification of the studied plant communities is presented, a brief description of the forest structure is given. The current state of the larch forests of the “Bastak” State Nature Reserve can be assessed as fairly stable. Currently, larch forests occupy within 25 % of the forested area. The most widespread area is occupied by lowland larch forests (94 %). Mountain larch forests are derived plant communities formed after forest cutting in fir-spruce forests.


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