THE SYNTAXONOMY OF FLOODPLAIN FORESTS OF THE SNOV RIVER BASIN

Abstract

Purpose of the work. To establish syntacosnomic units of groups of floodplain forests of the Snov river basin.

Methodology. The article contains the systematized and generalized results of the study of the syntaxonomic composition of the groups of floodplain forests of the Snov River basin as a basis for field research in 2019-2024, as a result of which 61 geobotanical descriptions. The classification of forest vegetation was carried out according to the principles of the Braun – Blanquet floristic classification of vegetation.

Scientific novelty. The modern syntaxonomic structure of alder and willow-poplar floodplain forests of the Snov River basin has been established.

Conclusions. The distribution of forest vegetation within the study area is determined mainly by edaphic and hydrological factors, which determine the formation of the floodplain forest grouping of the study area. The forest vegetation of the floodplain forests of the Snov River basin is represented by 2 classes, 2 orders, 2 unions and 10 associations, respectively, namely: the class Salicetea purpureae Moor 1958, which is represented by the order Salicetalia purpureae Moor 1958, the union Salicion albae Soó 1951, which includes four associations Salicetum albae Issler 1926, Poo nemoralis-Salicetum albae Shevchyk et Solomakha 1996, Salici-Populetum (Tx. 1931) Meijer-Drees 1936, Populetum nigro-albae Slavnić 1952 and the class Alnetea glutinosae Br.-Bl. et. Tx. ex Westhoff et al. 1946, which is represented by the order Alnetalia glutinosae Tx. 1937, the union Alnion glutinosae Malcuit 1929 and includes six associations Ribo nigri-Alnetum Solińska-Górnicka (1975) 1987, Carici acutiformis-Alnetum Scamoni 1935, Carici elongatae-Alnetum Schwickerath 1933, Angelico sylvestri-Alnetum Borhidi 1966, Urtico dioicae-Alnetum glutinosae (Scamoni 1935) Fukarek 1961, Carici elatae-Alnetum glutinosae Franz 1990. The studied floodplain forest vegetation belongs to forest biotopes D1.6. The associations Salicetum albae, Salici-Populetum, Populetum nigro-albae of the Salicetea purpureae class have synsozological status and are protected under the European Council Directive 92/43/EEC. The groups of the Alnetea glutinosae class do not have a protected status, but the Carici elongatae-Alnetum associations require protection. The rare component of the floristic core of the associations is represented by three species, among them Equisetum hyemale L., Pteridium aquilinum (L.) Kuhn, Hottonia palustris L., which have a regionally rare status in the Chernihiv region.