The effects of north and south slop on the productivity of leaves and accumulation of carbon in leaves in fagetum Associations in the Gorazbon district within Kheyroudkenar forest (north of Iran)

Dried leaves were collected from north, south facing in regions with similar ecological conditions in pure Fagetum Associations in the Gorazbon district located Kheyroud kenar forest. Leaf litters were sampled by linear transects in March 2006. 30 square with 1m² areas were sampled in each facing. The leaves ٰin each samples were weighted. The samples were dried by an Oven in 95ºC for 24 hours at laboratory and they were weighted. Ash of samples was provided in375ºC for 48 hours by a kiln. Organic matters and accumulation carbon of samples were calculated. One-way ANOVA was applied for analyzing the difference of dried leaves, ash quantities, Carbon accumulation and organic matters percentages between aspects in litters. Tukeyُs Honestly Significant Difference (HSD) test was used for multiple comparisons. The results showed there were not significant differences between wet and dry weights of leaves related to aspects. Carbon and organic matters percentages and ash weights were significantly differed in aspect positions.