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Дата изменения: Thu Nov 10 23:18:59 2005
Дата индексирования: Tue Oct 2 00:00:52 2012
Кодировка:
CRITICAL LOADS OF ACID DEPOSITION FOR FORESTS

CRITICAL LOADS OF ACID DEPOSITION FOR FOREST ECOSYSTEMS IN THE KOLA PENINSULA

G. Koptsik (1) and S. Koptsik (2)

(1) Faculty of Soil Science, Moscow State University, Moscow 119899, Russia;
(2) Faculty of Physics, Moscow State University, Moscow 119899, Russia

Water, Air and Soil Pollution, 1995, 85: 2553-2558.

Annotation:

We assessed critical loads of acid deposition and their exceedance for soils in the Kola Peninsula using a simple balance method and mapped them within 1.0° · 0.5° longitude/latitude grid cells. Critical loads of acidity vary from 200 to 800 molc/ha/y with the type of soil, parent rock, vegetation and climatic conditions. The critical deposition values are dominated by S contribution. Present sulphur depositions are higher than critical values in the large part of the Kola Peninsula (about 40% of total area). The greatest excess (800-1200 molc/ha/y) occur in north-western and western parts, especially in surroundings of nickel smelter in Nickel. Terrestrial ecosystems in the north-western Kola Peninsula are particularly susceptible to acid deposition damage due to relatively high soil sensitivity and heavy sulphur deposition.

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