Botanica Lithuanica, Volume 10, Number 4

2004 m.

Trakai Historical National Parks, in 2001–2003. They were divided into four groups by ecoaesthetical quality and into three groups by the character of vegetation structures. The ecoaesthetical features of sceneries and their vegetation were determined. The correlation analysis of sceneries and ecoaesthetical quality of their components was carried out.

Keywords: scenery, structures of vegetation, ecoaesthetical quality, Vilnius city.

Plant communities belonging to seminatural vegetation distributed in traditional rural habitats are described. Field investigation of vegetation was carried out by transect method in Šaukliai and Kulaliai geological reservations, boulder accumulations, earlier used as pastures. The classification of relevés was carried out according to the criteria of J. Braun-Blanquet. For identification of degressive stage of pastures K. Kopecky and S. Hejny method of deductive classification was applied. As a result of the classification the ass. Calluno-Nardetum strictae (with two variants and one facies) and derivative community Urtica dioica-[Molinio-Arrhenatheretea/Nardo-Callunetea] were distinguished. Acid soils, lack of nitrogen in soil, maritime climate of the locality define distribution of the association. Derivative community arose in place of degraded Calluno-Nardetum strictae because of pasture degression. Juniperus communis is not strongly competitive in the investigated heaths. In open boulder accumulations Deschamsia cespitosa is the most important component of phytocoenoses.

Keywords: habitats, boulder accumulations, heaths, Juniperus communis formations, Lithuania.

The article analyses the development of vegetation investigations in Lithuania in the period when Lithuania was an independent country and during World War II, i.e., in 1922–1943 and in the Soviet time, i.e., during 1944–1985. Referring on archival documents and scientific publications, the main peculiarities of the development of vegetation investigations are discussed. The influence of historical conditions and the ideas of Western and Eastern phytosociological scientific schools on the research in Lithuania is reviewed.

Keywords: Lithuania, vegetation, phytosociology, Swiss-French school, Swedish school, Soviet school, science, history.