The development of the intensive monitoring system of the main forest ecosystems through monitoring of flora composition

摘要

The main peculiarties of flora composition in three years (2000-2002), in ten forest ecosystem types have been emphasised, using a research method developed in Europa (Dobremez et al., 1997) as follows: - in nine forest ecosystem typees the total flora richness have been higher in 2001 than in 2000 and 2002; - in very productive Beech with Asperula ? Asarum ? Stellaria forest type from Baia Mare, affected less in 2001 and 2002 than in 2000 by SO2 pollution, the total flora richness have been higher in 2001 and 2002 than in 2000; - the characteristic species indicated differently degrees of accidification, pauperization, and natural dryng process of soils in forest ecosystem types. Keywords: species richness, beech stands, SO2 pollution, forest ecosystem typees, degrees of accidification of soils.