Ecological monitoring of Scots pine (Pinus sylvestris L.) growing in forest ecosystems at roadsides

2001

S. 212-219

3 Abb., 4 Tab., 12. Lit. Ang.

Unselbständiges Werk

200087171

The results of monitoring of Scots pine (Pinus sylvestris L.) conducted in 1998-2000 according to international forest monitoring methodology (UN/ECE 1994) are presented. The indicatorial parameters (crown defoliation, foliage discolouration, state of tree tops, amount of dry branches etc.) of 684 sample trees at the distances of 10-20, 50-100, 150-200, 250-300, 350-400 and 450-500 m from a highway were evaluated and discussed. The results have indicated that pines at the farthest distance (450-500 m) from the roadbed have the best health condition (mean defoliation 23.6 ء 2.2%) in comparison with trees growing close to the highway (43.3 ء 1.5%). Amount of dry branches depends on a distance from the highway as follows: at the permanent observation plots closest to the highway - 30.2 ء 1.2%, furthest - 12.8 ء 1.8%. State of pine tops is good - at all permanent observation plots more than 70% of the healthy tree trop were estimated.