Досліджено спонтанні дрібнолистяні угруповання перелогів, які є першою стадією відновлення широколистяних лісів. В складі угруповань березових, осикових та вільхових молодняків на перелогах (Івано-Франківська та Житомирська обл.) виділено та описано відповідно три нові асоціації (Cirsio arvensi-Betuletum pendulae, Phalacrolomo annui-Populetum tremulae, Dauco carotae-Alnetum glutinosae). Дані синтаксони віднесено до нового класу Dactylo glomerati-Populetea tremulae Vorobyov et I. Solomakha cl. nova in press. Також узагальнено синтаксономію цього класу на території України.Ключові слова: синтаксономія, клас Dactylo glomerati-Populetea tremulae, перелоги, заліснення, березові осикові та вільхові ліси, Україна.

The article reproduces the historical aspects of forest reclamation measures in the agricultural landscapes of Ukraine. As a result of the analysis, we have identified four stages of forest reclamation activitiesin modern Ukraine. The origin and initial stage of development of forest reclamation in Ukraine (the firsthalf of the XIX century — the first quarter of the XX century) are associated with the idea of correctingadverse climatic conditions with forest plantations and their positive impact on the environment, including agricultural growth cultures. This period was also marked by the substantiation of technologies forthe creation of protective plantations and the establishment of the first specialized state institutions onsteppe afforestation. The second stage (early 1930s – until 1952) was characterized by giving priority tofield-based afforestation on a national scale, which as carried out on a regular project basis. It was duringthis stage of development that the most productive period in the history of forest reclamation took place,which had no analogues in world practice in terms of the scale and novelty of scientific and technicalsolutions and their implementation. The third stage of development (1953–1975) began with a significantreduction in the volume of protective forest plantations and was generally characterized by instabilityin the development of forest reclamation. The last fourth (modern) stage of development (from 1976 tothe present) was marked by a general decrease in the volume of field afforestation. During this period, asignificant reduction in the scale of forest reclamation began, the planned volumes were not met, at thesame time there was a deterioration of the existing protective plantations and a decrease in their efficiency.It is known that forest reclamation in the system of agro-landscapes contributes to the improvement ofecological, agroforestry and environmental conditions and ensures the sustainable functioning of agricultural production. However, the forest reclamation infrastructure of protective forest plantations thathas developed in Ukraine is not effective enough. The area of protective forest plantations and forests for various purposes is not sufficient to ensure the stability of the agricultural landscape, and the fieldprotective forest cover of the country is only 1.3%, which is much lower than optimal. About 40% of fieldprotective forest strips have unsatisfactory condition and forest reclamation properties.Therefore, there is a need to develop a state program for the reproduction and rehabilitation of existing forest belts through the planting of trees and shrubs, as well as the creation of additional field forestbelts from the available range of fast-growing, climate-resistant species

ВступІн те рес до вив чен ня Сeratophyllum tanaiticum Sapegin ви зна ча єть ся на сам пе ред не дос тат ні ми ві до мостя ми про його аре ал і особ ли вості по ши рен ня на території України (наведений для Лівобережжя, півдня країни та Криму) (Dubyna et al., 1985;Chorna, 2006), у Східній та Центральній Європі, Західному Казахстані, на Кавказі (Tzvelev, 2001. Наразі в літературі трапляються дещо суперечливі висновки щодо його розповсюдження. Вид характеризують і як понтійськокаспійський, і як реліктовий причорноморський ендемік, і як кавказькосхідноєвропейський (Dubyna et al., 1985;Les, 1986; Tzvelev, 2001), а за найновішими даними він виявлений і в Угорщині (Csiky et al., 2010). Таким чином, пос тає пи тан ня про тип його ареа лу та су час ний ха рак тер по ши рен ня на те ри то рії Ук ра ї ни. Ок рім цьо го, з ог ля ду на рід кіс ність цього виду та не об хід ність його охо ро ни, до сить важ ли вим є до слі джен ня особ ли востей ре про дук ції, біо ло гії, фі то це но ло гії в умо вах кон крет них міс цез ростань. Schevchyk V.L., Solomakha I.V., Solomakha V.A. Ceratophyllum tanaiticum (Ceratophyllaceae) inlakesoftheSupіyRiverDelta (MiddleDniproarea).Ukr. Bot. J., 2017, 74(4): 355-359.Abstract. A rare relict species, Сeratophyllum tanaiticum, was found in three lakes during surveys of floodplain vegetation in the lower reaches of the Supіy River (Cherkasy Region, Ukraine). These lakes are located on the left bank of the Supіy River, near its confluence with the Dovhun River, which is actually one of the former riverbeds of the Dnipro River. The studied area is represented by floodplain complexes formed by segments of the old floodplain, terrace depressions nearby and upland terrace. There are many small (less than several ares in area) bayou lakes, filled with water during floods, which due to special character of underlying surface (fascia of finegrained sand and loam) dry out very slow during periods of low water levels in late summer and autumn. The localities of С. tanaiticum, where it plays a role of codominant and assectator in hydrophyte communities, represent habitats of little overgrown drying eutrophic reservoirs with organogenic benthic sediments. Plant communities featuring species identify relatively clean reservoirs. Ensuring sufficient water level in specific reservoirs -drying bayou floodplain lakelets -in the first half of vegetation season may be considered as the main conservation measures for С. tanaiticum.

Forest typological and phytososological biodiversity of forest vegetation of Slobozhansky National Park is shown. The park covers 5244 hectares and includes the main parts of the run off valleys of the left-bank Merla River tributary, which belongs to the Vorskla River basin in the Kharkiv region. The main forest-forming species of the Slobozhansky National Nature Park are Pinus sylvestris L. (2779.3 hectares, 59.84%), Quercus robur L. (1451.8 hectares, 31.26%). Minor areas are occupied by Betula pendula Roth (138.3 hectares, 2.98%), Alnus glutinosa (L.) P. Gaertn. (122.5 hectares, 2.64%), Populus tremula L. (45.0 hectares, 0.97%) and other species. Areas covered with forest vegetation are represented by 16 edatopes: all trophotope and almost all hygrotopes, except very dry. Among the trophotopes subors (2015.2 hectares, 43.39%), oak wood (1504.4 hectares, 32.39%) and sugruds (1042.2 hectares, 22.44%) predominate, and the part of pine forest is insignificant (82.5 hectares, 1.78%). Among hygrotopes, the majority are with fresh conditions (4060.6 hectares, 87.43%), much smaller areas are dry (268.4 hectares, 5.78%), damp (184.3 hectares, 3.97%), moist (124.4 hectares, 2.68%) and wet (6.6 hectares, 0.14%) conditions. There are 17 types of forests in the Slobozhansky National Park areas covered with forest vegetation. Fresh oak-pine forest (1780.6 hectares, 38.35%), fresh maple-linden forest (1453.6 hectares, 31.30%), fresh linden-oak-pine sugrud (756.8 hectares, 16.30%) are dominated. Pinus sylvestris plantations grow in 10 forest types. The most common types of pine forests are fresh oak-pine and fresh linden-oak-pine sugrud. Quercus robur growth in 7 forest types, the most common of which is fresh maple-linden oak wood. The distribution of forest typological differences on the territory of the park of vascular plants rare species populations, which have different sozological status is analyzed. Annex I to Resolution 6 of the Berne Convention includes the following species: Dracocephalum ruyschiana L., Jurinea cyanoides (L.) Rchb., Iris pineticola Klokov. A number of species have the appropriate conservation status in Ukraine (Diphasiastrum complanatum (L.) Holub, Lycopodium annotinum L., Dracocephalum ruyschiana, Pulsatilla pratensis (L.) Mill. Sl, Allium ursinum L., Iris furcata M. Bieb., Iris pineticola, Fritillaria meleagris L., F. ruthenica Wikstr., Tulipa quercetorum Klokov & Zoz, Epipactis helleborine (L.) Crantz, Listera ovata (L.) R. Br., Neottia nidus-avis (L.) Rich., Platanthera bifolia (L.) Rich., Stipa borysthenica Klokov ex Prokudin) and 22 species at the regional range.

<p>As a result of sociological analysis found that in the vegetation cover of forests and shrubs in the Northern Black Sea found 88 view of rare and endangered plants. For 37 species, there are phytocoenotic table, the data on the other - are induced for that literary materials herbarium. They have a different distribution in the classes of the vegetation on the study territory: <em>Pulsatillo</em><em>-</em><em>Pinetea</em> <em>sylvestris</em> (13 species), <em>Dactilydo glomeratae</em><em>-</em><em>Populetea</em><em> </em><em>tremulae</em> (13), <em>Festuco</em><em>-</em><em>Brometea</em> (9), <em>Rhamno</em><em>-</em><em>Prunetea </em>(8), <em>Nerio</em><em>-</em><em>Tamaricetea</em> (7), <em>Salicetea</em><em> </em><em>purpureae</em> (5), <em>Robinietea</em><em> </em>(3), <em>Alnetea glutinosae</em> (3)<em>,</em> <em>Franguletea</em> (3). Some rare and endangered communities of the territory need to be included in the «Green Book of Ukraine».</p> <p><em>Key words</em><em>: </em><em>vegetation, syntaxonomy</em><em>,</em><em> forests, shrubs, sozological characteristic, </em><em>Northen Black Sea region.</em></p>