VEGETATION MONITORING IN SOUTH-VARANGER, NORWAY - SPECIES COMPOSITION OF GROUND VEGETATION AND ITS RELATION TO ENVIRONMENTAL VARIABLES AND POLLUTION IMPACT

摘要

The area along the Norwegian-Russian border is threatened by air pollution from emission soruces on the Kola Peninsula. A permanent network of 78 ssytematically chosen monitoring sites ahs been established in eastern Finnmark, Norway. Species abundance data from the ground vegetation have been recorded from 1320 systrematically chosen permanent plots inside 66 of these sites, using frequency in suboplots and visual estimates of percentage cover. Environmental variables were obtained for the whole site. Multivariate data analysis has been used to decribe the variation in the species composition and to study its relation to environmental variables and pollution impact.