Classification of woody-shrub vegetation of the forest-steppe complex of Privolzhskaya Upland

2009 ◽  
pp. 27-53
Author(s):  
A. Yu. Kudryavtsev

Diversity of plant communities in the nature reserve “Privolzhskaya Forest-Steppe”, Ostrovtsovsky area, is analyzed on the basis of the large-scale vegetation mapping data from 2000. The plant community classi­fication based on the Russian ecologic-phytocoenotic approach is carried out. 12 plant formations and 21 associations are distinguished according to dominant species and a combination of ecologic-phytocoenotic groups of species. A list of vegetation classification units as well as the characteristics of theshrub and woody communities are given in this paper.

2018 ◽  
pp. 19-39
Author(s):  
M. A. Makarova

Geobotanical survey of floodplain natural complexes near gypsum outcrops in the Pinega river valley was done in 2015. Large-scale geobotanical map of the key polygon (scale 1 : 30 000) was composed. Typological units of vegetation were selected on the basis of the composition of dominant species and groups of indicator species. Homogeneous and heterogeneous territorial units of vegetation (serial series, combinations, environmental series) were used. 53 mapped unit types (25 homogeneous types and 28 heterogeneous types) were recognized. The floodplain vegetation consists of 17 homogeneous types of plant communities, 3 series, 14 combinations and 6 ecological series. The sites of old floodplain forests, such as willow forests with Urtica sondenii rare in the Arkhangelsk region and oxbow wet meadows with Scolochloa festucacea were identified.


Ecologies ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 203-213
Author(s):  
Ram C. Sharma

Vegetation mapping and monitoring is important as the composition and distribution of vegetation has been greatly influenced by land use change and the interaction of land use change and climate change. The purpose of vegetation mapping is to discover the extent and distribution of plant communities within a geographical area of interest. The paper introduces the Genus-Physiognomy-Ecosystem (GPE) system for the organization of plant communities from the perspective of satellite remote sensing. It was conceived for broadscale operational vegetation mapping by organizing plant communities according to shared genus and physiognomy/ecosystem inferences, and it offers an intermediate level between the physiognomy/ecosystem and dominant species for the organization of plant communities. A machine learning and cross-validation approach was employed by utilizing multi-temporal Landsat 8 satellite images on a regional scale for the classification of plant communities at three hierarchical levels: (i) physiognomy, (ii) GPE, and (iii) dominant species. The classification at the dominant species level showed many misclassifications and undermined its application for broadscale operational mapping, whereas the GPE system was able to lessen the complexities associated with the dominant species level classification while still being capable of distinguishing a wider variety of plant communities. The GPE system therefore provides an easy-to-understand approach for the operational mapping of plant communities, particularly on a broad scale.


2001 ◽  
pp. 71-86 ◽  
Author(s):  
V. N. Ukhachova ◽  
E. I. Lomova

The diversity and dynamics of vegetation communities of the ash-oak «Vorskla River Forest» which represents the zonal forest type of the Middle-Russian forest-steppe is analyzed on the basis of the large-scale vegetation mapping data of 1958, 1964, 1984, and 1996. The plant cover mesophylization trend, connected with the proper changes of the climate in the study region, can be traced through the period of observation.


2019 ◽  
pp. 135-142
Author(s):  
K. V. Ivanova ◽  
A. M. Lapina ◽  
V. V. Neshataev

The 2nd international scientific conference «Fundamental problems of vegetation classification» took place at the Nikitskiy Botanical Garden (Yalta, Republic of Crimea, Russia) on 15–20 September 2019. There were 56 participants from 33 cities and 43 research organizations in Russia. The conference was mostly focused on reviewing the success in classification of the vegetation done by Russian scientists in the past three years. The reports covered various topics such as classification, description of new syntaxonomical units, geobotanical mapping for different territories and types of vegetation, studies of space-time dynamics of plant communities. The final discussion on the last day covered problems yet to be solved: establishment of the Russian Prodromus and the National archive of vegetation, complications of higher education in the profile of geobotany, and the issue of the data leakage to foreign scientific journals. In conclusion, it was announced that the 3rd conference in Nikitskiy Botanical Garden will be held in 2022.


Koedoe ◽  
2018 ◽  
Vol 60 (1) ◽  
Author(s):  
Nqobile S. Zungu ◽  
Theo H.C. Mostert ◽  
Rachel E. Mostert

Vegetation research is an important tool for the simplified and effective identification, management and conservation of the very complex ecosystems underlying them. Plant community descriptions offer scientists a summary and surrogate of all the biotic and abiotic factors shaping and driving ecosystems. The aim of this study was to identify, describe and map the plant communities within the uMlalazi Nature Reserve. A total of 149 vegetation plots were sampled using the Braun-Blanquet technique. Thirteen plant communities were identified using a combination of numeric classification (modified Two-way-Indicator Species Analysis) and ordination (non-metric multidimensional scaling). These communities were described in terms of their structure, floristic composition and distribution. An indirect gradient analysis of the ordination results was conducted to investigate the relationship between plant communities and their potentially important underlying environmental drivers. Based on the results, the floristic conservation importance of each plant community was discussed to provide some means to evaluate the relative contribution of the reserve to regional ecosystem conservation targets.Conservation implications: The uMlalazi Nature Reserve represents numerous ecosystems that are disappearing from a rapidly transforming landscape outside of formally protected areas in Zululand. The descriptions of the plant communities of these relatively pristine ecosystems provide conservation authorities with inventories and benchmarks with which the ecological health of similar ecosystems in the region can be measured.


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.


Koedoe ◽  
2005 ◽  
Vol 48 (1) ◽  
Author(s):  
G. Cleaver ◽  
L.R. Brown ◽  
G.J. Bredenkamp

Long-term conservation ecosystems require a broader understanding of the ecological processes involved. Because ecosystems react differently to different management practices, it is important that a description and classification of the vegetation of an area are completed. A vegetation survey of the valley areas of the Kammanassie Nature Reserve was undertaken as part of a larger research project to assess the environmental impacts of large-scale groundwater abstraction from Table Mountain Group aquifers on ecosystems in the reserve. From a TWFNSPAN classification, refined by Braun-Blanquet procedures, 21 plant communities, which can be grouped into 13 major groups, were identified. A classification and description of these communities, as well as a vegetation map of the different areas are presented. Associated gradients in habitat w ere identified by using an ordination algorithm (DECORANA). The diagnostic species as well as the prominent and less conspicuous species of the tree, shrub, forb and grass strata are outlined. The study also resulted in a total number of 481 species being identified and the discovery of a new Erica species. These vegetation surveys and descriptions provide baseline information for management purposes and that allows monitoring as well as similar surveys to be conducted in future.


Koedoe ◽  
2018 ◽  
Vol 60 (1) ◽  
Author(s):  
Nqobile S. Zungu ◽  
Theo H.C. Mostert ◽  
Rachel E. Mostert

Vegetation research is an important tool for the simplified and effective identification, management and conservation of the very complex ecosystems underlying them. Plant community descriptions offer scientists a summary and surrogate of all the biotic and abiotic factors shaping and driving ecosystems. The aim of this study was to identify, describe and map the plant communities within the uMlalazi Nature Reserve. A total of 149 vegetation plots were sampled using the Braun-Blanquet technique. Thirteen plant communities were identified using a combination of numeric classification (modified Two-way-Indicator Species Analysis) and ordination (non-metric multidimensional scaling). These communities were described in terms of their structure, floristic composition and distribution. An indirect gradient analysis of the ordination results was conducted to investigate the relationship between plant communities and their potentially important underlying environmental drivers. Based on the results, the floristic conservation importance of each plant community was discussed to provide some means to evaluate the relative contribution of the reserve to regional ecosystem conservation targets.Conservation implications: The uMlalazi Nature Reserve represents numerous ecosystems that are disappearing from a rapidly transforming landscape outside of formally protected areas in Zululand. The descriptions of the plant communities of these relatively pristine ecosystems provide conservation authorities with inventories and benchmarks with which the ecological health of similar ecosystems in the region can be measured.


This article is devoted to study the characteristics of ecological-cenotic structure and directions of vegetation cover transformations in riparian and coastal zones of forest swamps within the forest-steppe zone (north-western part of Kharkiv Oblast, Ukraine). The survey has been conducted in 2013–2018 in the territory of the Slobozhansky National Natural Park. Plant communities were surveyed both in phanerophyte and grass biotopes types, having different genesis and degree of disturbance (from terrestrial to aquatic, from native to artificially created forest plantations). A number of regionally rare plant species were identified in their composition (Dryopteris carthusiana (Vill.) H.P.Fuchs, Majanthemum bifolium (L.) F.W.Schmidt, Calluna vulgaris (L.) Hull, Equisetum sylvaticum L., Potentilla erecta (L.) Raeusch., Rubus saxatilis L., Eriophorum angustifolium Honck., E. vaginatum L., Drosera rotundifolia L., Nymphaea candida C.Presl, Utricularia vulgaris L.) and U. minor L. – a species listed in the Red Book of Ukraine. Route and stationary techniques of field surveys were used for clarification the general features of horizontal vegetation structural organization, as well as for studying the effect of environmental factors on state and stability of plant communities. Usage of mobile GIS applications in geodata collection and their further processing in ArcMap project allowed us to develop a large-scale geobotanical map (1:1500) as an area of permanent botanical survey (1.9 ha). According to the results of phytoindication, indicators of 7 environmental edaphotop regimes in 25 plant communities studied (objects of mapping and further monitoring) have been identified. Based on the geobotanical map, integration of data on the intensity of vegetation transformation have been conducted. It was found that plant communities ІV (the highest) and III degrees of transformation cover an area more than 0.6 hectares (one third of the total plot area). These communities were occurred mainly in phanerophyte-type biotopes (aspen, willow, birch, and, partly, pine), which have been affected by pyrogenic and biogenic factors. The GIS-project created as a result of the study serves as a geo-information base that can be further improved and used to solve other applied problems.


Ekosistemy ◽  
2021 ◽  
pp. 5-11
Author(s):  
L. A. Novikova ◽  
E. V. Mikhailova ◽  
V. M. Vasjukov ◽  
T. V. Gorbushina

Halophytic vegetation is very rare in the forest-steppe zone. It was studied in the tract Serdobsky solonetsin the vicinity of Serdobsk (Serdobsky district, Penza region). The studies were conducted in the years 2009–2018, using the technique of geobotanical profiling. 80 trial areas were laid (35 in 2009 and 45 in 2008). Ecological and phytocenotic classification of plant communities is performed on the dominant principle. Comparison of two descriptions of vegetation with an interval of 10 years allows us to trace the transformation of halophytic vegetation after intensive anthropogenic impact (grazing and partial plowing) in different environmental conditions. The flora of Serdobsky solonets consists of 179 species of vascular plants, of which 13 species are included in the Red book of the Penza region (2013). The share of halophytic vegetation on the territory of Serdobsky solonetshas changed over 10 years: from 97.0 % to 63.8 %. Moreover, halophyte meadows occupied 67.0 % and halophyte steppes 30.0 % of the area in 2009. Now (2018) halophytic steppes make up 30.8 %, and halophytic meadows 33.0 %.The main stages of demutation of halophytic steppe and meadow vegetation were identified in various environmental conditions (meadows and steppes). The same stages of demutation were identified earlier for the South-Eastern Solonets (Neverskinsky district of the Penza region). However, a special stage of annual saline grasslands has been identified.This place requires protection due to the high level of floral and phytocenotic diversity. We offer to organize here a natural monument called “Serdobsky solonets”.


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