Ecology, Environment and Conservation Paper

Vol.12, Issue 4, 2006; Page No.(605-608)

DETERMINING RATE OF LITTER DECOMPOSITION AND DYNAMIC OF CARBON, NITROGEN AND THOSPHORUS OF FAGUS ORIENTALIS IN ASALEM AND VAZ REGIONS UNDER LABORATORY CONDITIONS

Vahid Hosseini and Piroz Azizi

Abstract

In order to determine the rate of litter decomposition of Fagus orientalis at two beech stands, litters from Vaz and Asalem with different parent material were collected in autumn. Litters of each region, put in four vases for 357 days in laboratory conditions. Sampling was taken within 21 days. Then nitrogen, carbon and phosphorus were measured in each interval. On the first day, the amount of N was 0.73 % and 0.81 % and amount of phosphorus was 817.5 mg/kg and 420 mg/kg in litter of Vaz and Asalem respectively. The amount of C was 43.4 % in Vaz and 41.6 % in Asalem. Rate of carbon variation showed no significant difference in two regions. Rate of nitrogen and phosphorus variation showed significant difference in two regions. C/N of litter reduced from 59.95 to 32.8 and from 47.7 to 28.7, C/P of litter reduced from 531 to 355 and from 989 to 479 in Vaz and Asalem respectively.

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