Accession Number : ADP007320

Title :   Effects of Point Source Atmospheric Pollution on Boreal Forest Vegetation of Northwestern Siberia,

Corporate Author : NATIONAL PARK SERVICE ANCHORAGE AK ALASKA REGION

Personal Author(s) : Vlasova, T. M. ; Kovalev, B. I. ; Filipchuk, A. N.

Report Date : MAR 1992

Pagination or Media Count : 6

Abstract : Atmospheric pollution from the Noril'sk Mining-Metallurgical Complex, in the form of heavy metals and sulfur components, has resulted in damage to plant communities in the area. Vegetation on over 550,000 ha has been detrimentally affected by the pollution fallout, primarily sulfur dioxide. Forests (mainly Larix sibirica) and most lichens have been killed within a 300,000-ha zone around Noril'sk and extending about 50 km to the south and southeast. Less severe damage to lichens and vascular plants extends 170 km to the south and 80 km to the east of the pollution source consistent with prevailing winds during the period of plant growth. Terricolous lichens are particularly vulnerable to the pollution products and among vascular plants Larix gmelinii, Picea obovata, Ledum palustre, Calamagrostis sp., and Salix lanata show least resistance.

Descriptors :   *AIR POLLUTION, *VEGETATION, ATMOSPHERICS, COMMUNITIES, DAMAGE, DIOXIDES, FALLOUT, HEAVY METALS, LICHENS, METALS, PLANT GROWTH, POLLUTION, REGIONS, RESISTANCE, SULFUR, USSR, SYMPOSIA, SIBERIA, TOXICITY, ENVIRONMENTAL IMPACT.

Subject Categories : Air Pollution and Control
      Geography
      Forestry

Distribution Statement : APPROVED FOR PUBLIC RELEASE