It is shown that red fescue form (Festuca rubra var. genuina Gr. et Godr.) is the long root-curtin cereal and a perfect «builder» of turf couver. This type contains more mezophytes than another types, though there are forms from gigrophytes to mezokserofit. In Ukraine it’s the common type of meadow herbage which can be find in forest, foreststeppe zone, in Carpathians. In the steppe zone it is mostly adventitious. Original never described before property of Festuca rubra var. genuina Gr. et Godr. is the optional ortotrophnyh ( vertical growth). This phenomenon contributes to the formation of vertical orientation turf (registered in shading conditions and increased air humidity). Support and the basis for this are the Tree trunks and rocks are herewith its support. Festuca rubra is one of the most applicable plants for making of high quality lawns and antierosion sod cover in the steppe zone including the industrial pollution conditions, in the zone of spraying by sea spray as well as for growing of “roll turf”.  Ecological-biological properties of Festuca rubra give the big possibilities for improvement of its range, the most closely adapted to the specific conditions of habitat in the steppe zone and introduction of high-performance seed here.

Показано можливість використання методу кореляційних плеяд для визначення життєвості популяції багаторічних злаків поліцентричної біоморфи. Збільшення за роками інтегрального показника плеяди свідчило про прогресуючий розвиток популяції Poa angustifolia L. та збігалося з інвазійним періодом її життєдіяльності. Значення цього критерію, що дорівнює 0,5 і більше, відповідало «нормальному» стану популяції. Його зменшення свідчило про початок деструктивних процесів.

On the example of the concepts of «lawn», «phytocoenosis», «ecology» outlines the general laws of the gradual transformation of foreign-language professional word in the scientific term. It is proposed the following definition of the latter concepts. Ecology is a science about relationships of an organism or community of organisms with environmental factors (natural and anthropogenic). The process of formation of a new term, its approval as a full and irreplaceable in the professional language as well as the accuracy and appropriateness of the use will be more clear and expressive, if they come from an analysis of the concept of niche terminology. These words («terminological niche») is called a set of practical and scientific factors that provide or may provide a normal appearance and communicative functioning of the term. Under «normal functioning» of the term we mean the state of its constant use in any style and genre of contemporary normative language understood by the reader according to the signified concept. The proposed understanding of the terminological niche allows in readable position to see the rule that each term pass through the following stages of its development. 1. Free terminological niche stage. At this time, there is no any name of the material or intellectual object (object, phenomenon, point of view, and so on) after the formation of it in reality or in the mind of the author. Between the cause (the appearance of the object) and the effect (the formation of its name), there is a time gap that exists within minutes, but can last for years. 2. Stage of filling the free terminological niche (formation of the term). This time is characterized, among other things, by the existence of professional words mostly as synonymous new object names with their «desire» to leave (as a result of competitive relations of different professional words) to the level of a full indispensable term within the normative language and the specific term system. At the beginning of this stage of professional words (the term precursors) can be used in the narrow circle of specialists or be banned. This is the primary latent (hidden) state of the term. 3. The stage completely filled a niche – during the maturity of the term, its stay at the height of the functional capacity, the situation is universal acceptance of relevant specific of the term designated of its concept. 4. Step regressive niche is time of regression, degradation of the term, which is manifested, among other things, to homonymy, secondary synonymy, reducing in the frequency of use of the term in written and oral texts. 5. Stage of dead niche. The situation is of exhaustion factors that ensure the normal funtioning of the term and the lack of its use in texts. The ability to save the historical meaning of the term indicates the presence of a secondary latent niche. The adjustments in the above-proposed scheme can make cases of return the names of the past and rename concepts. It is shown that the terms are characterized by emotional and expressive component at all stages of their existence. The intensity of expression varies from a minimum periodic manifestations to the maximum expressiveness, which can significantly distort the content of the concept, as is often the case with the term «ecology».

It is shown that red fescue form (Festuca rubra var. genuina Gr. et Godr.) is the long root-curtin cereal and a perfect «builder» of turf couver. This type contains more mezophytes than another types, though there are forms from gigrophytes to mezokserofit. In Ukraine it’s the common type of meadow herbage which can be find in forest, foreststeppe zone, in Carpathians. In the steppe zone it is mostly adventitious. Original never described before property of Festuca rubra var. genuina Gr. et Godr. is the optional ortotrophnyh ( vertical growth). This phenomenon contributes to the formation of vertical orientation turf (registered in shading conditions and increased air humidity). Support and the basis for this are the Tree trunks and rocks are herewith its support. Festuca rubra is one of the most applicable plants for making of high quality lawns and antierosion sod cover in the steppe zone including the industrial pollution conditions, in the zone of spraying by sea spray as well as for growing of “roll turf”.  Ecological-biological properties of Festuca rubra give the big possibilities for improvement of its range, the most closely adapted to the specific conditions of habitat in the steppe zone and introduction of high-performance seed here.

The value of lawns shows up completer in all, when they occupy 40 – 90 % of the areas of green plantations. However in industrial cities their part is less, they have the mainly unsatisfactory state, contain the ruderal species. Therefore an ecological ground of creation of proof lawn phytocenosis in cities with high technogenic pressure, and also development of research and practice measures of their arrangement in the conditions of certain anthropogenic landscape taking into account the ecologic and biologic features of turf-forming species and terms of the urbanized environment is the scientific issue. The aim of our research is: on the basis of ecologo-phytocenotic researches to set the phytocenotic features of lawns and coverage of lawn type of the urbanized ecosystems on the example of Nikopol for development of ecological bases of creation of proof cenosis in municipal habits and decision of questions of optimization of environment. The trial areas under study were located among grasses of grass type and ornamental lawns in the city of Nikopol. The administrative and residential areas of the city were covered. In total, thirty test sites of size 1m2 (metrics) were described, divided into 120 areas of size 0,0625 m2. Characteristics were studied on each test area: illumination, species composition, percentage of projective coverage of each species found, percentage of free plant area. In the 30 trial sites covered by our research, 44 species of plants belonging to 15 families were identified. Species saturation of investigated test areas (1m2) varied from 10 to 17 species. Among the families, the primacy of the species composition was occupied by Asteraceae and Poaceae.Taking into account the instructions of V.V. Tarasov, the spectrum of the first percentages of the occurrence of families reproduces the composition of the regional flora with the dominance of cereals and herbs. The analysis of herbaceous vegetation was carried out taking into account the prevalence (in the event of a species) and the quantitative role in the formation of grass (projective coverage). This made it possible to find out the potentialities of species in a certain growth area, that is, competing ability.The triumphal triumph in the whole spectrum of the species we found among the grasses are Trifolium repens L. (occurrence of 93%), Polygonum aviculare L. (90 %), Taraxacum officinale Webb. ex Wigg. (83 %), Ambrosia artemisiifolia L. (80 %), Achillea submillefolium Klok. et Krytska (70 %), Convolvulus arvensis L. (70 %) etc. These are representatives of weed vegetation, for the most part – ruderal species, and even those that are quarantine and undesirable for urban lawn phytocoenoses.Of the Poaceae family, Poa angustifolia L. (87%), Elytrigia repens (L.) Nevsky (77%), Lolium perenne L. (70%) have high incidence. The indicated plants are representatives of both steppe flora, and ray and even forest, which speaks of a wide range of ecological conditions of location among studied lawn phytocoenoses. Typical species that are able to form the most decorative grass cover (according to the classification of O. Laptev) are represented by the species Poa angustifolia, Lolium perenne, Poa pratensis L., Festuca valesiaca Gaud. Their prevalence in the herb is quite variable: from the presence on most of the test areas - Poa angustifolia, to those who met quite rarely  – Festuca valesiaca.Most of the investigated test areas form a thin-grasshopper and pyrite-grass-mixed grass group, which corresponds to the specific structure of meadow lawns and conventional urban grasslands. The ecological and phytocenotic composition of the investigated vegetation groups of the lawn type reflects the system formed by certain representatives that make up the botanical and ecological basis for the creation of stable long-lived grass coverings in the urban agglomeration of the steppe zone, is an objective benchmark for targeting the corresponding phytocoenic processes in the desired direction.Correlations analysis of projective coatings was performed to find out the relationship between Ambrosia artemisiifolia and other representatives of the lawn flora. The calculation is based on data from the area of ​​0.25m2 (120 sites). The obtained materials allowed to reveal a mutual correlation of quantitative indicators with a high degree of statistical probability. Thus, a probable negative correlation between the parameters of the projective cover of the plants of the family Fabaceae and Ambrosia artemisiifolia was found.