Changes in forest litter characteristics under the influence of aerotechnogenic loads

by

V.G. Scherbina

Branch of Institute of Natural and Technical Systems, RF, Sochi, Kurortny Av., 99/1

E–mail: v.g.scherbina@bk.ru

 

DOI: 10.33075/2220-5861-2025-4-71-82

UDC 574.474:504.73.05/.06                                      

EDN: https://elibrary.ru/rsruan

Abstract:

The impact of vehicle pollution in suburban forest ecosystems on forest litter parameters in the Sochi Black Sea resort area was studied. Observations were conducted on four permanent sample plots (25 × 200 m) in beech-hornbeam forb-blackberry forests, at distances from roads ranging from 0 to 30 m, with varying levels of aerothechnogenic pollution. Forest litter characteristics were assessed over a two-year period in the near-stem zone (up to 0.6 m) of all weakened middle-aged trees. These parameters included leaf litter volume, forest litter volume, precipitation, litter temperature and moisture, and the activity of water-soluble colins. It was established that the influence of the highway as a source of anthropogenic interference is accompanied by a slowdown in the decomposition rate of contaminated litter and an increase in the litter-litter coefficient to 6.9%, as well as an increase in the level of inhibitory properties of the forest litter by 24.2-37.3%. A correlation dependence of colin activity on the seasonal temperature of the litter (0.448) and a negative one on the amount of precipitation (-0.615) and litter moisture (-0.876) was determined. It was revealed that an average negative, but statistically significant correlation (-0.679) was observed between the aerotechnogenic load on forest communities and the concentration of phytogenic substances, decreasing with the load increasing (-0.346).

Keywords: forest litter, atmospheric air quality, precipitation, litter temperature, litter moisture content, allelopathic activity

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