PHYTOCOENOLOGICAL AND PRODUCTION EVALUATION OF THE ORIGINAL AND SECONDARY PINE FORESTS OF ZAHORSKA-NIZHNA LOWLAND

The contribution is dealing with floristic-phytocoenological and produ ction-ecological changes of the herb and moss layers of original pine- oak forests and secondary pine forests of Zahorska nizina lowland. Ana lysed in detail are original pine-oak forests (Pino-Quercetum hylocomi etosum and P-Q festucetosum) and secondary pine forests planted on the ir places (Pleurozio schreberi-Pinetum variant typical and variant wit h Carex supina, Calamagrostis epigejos and Calluna vulgaris) and also black locust monocultures (Chelidonio-Robinietum) widened also after p ine-oak forests.