بررسي جوامع گياهي راشستانهاي منطقه خشكاب (سياهكل - ديلمان )

Recognition of plant association in fagetum of Khoshkab zone(Siyakal-Deylaman)

The aim of this research was the recognition of plant association and its relation with soil in Khoshkab zone. This study has done based on Braun-Blanquette method. In this method, first Phyllitieto-Fagetum minimal area of releves was identified, then 180 releves were sampled in this zone by cover / abundance table of Braun-Blanquette. With analysis prepared tables (raw, differential and final), two associations: phyllieto-Fagetum, MercurialMercurialieto-Fagetum and three sub-associations: Cephalantheretosum - Fagetum, Epirnedietosum-Fagetum, Vicetoxietosum-Fagetum were recognized. Soil profiles were digged to appropriate with plant groups and dominant type of soil was identified acid brown, With using scientific references, chemical and physical experiments of soil, ecological groups were investigated and behavior of these groups was evaluated to temperature, moisture, pH, light and nitrogen. Results showed that association of Phyllitieto-Fagetum express destruction stages of forest and evolution of soil toward hydromorphic brown soil, but association of Mercurialito-Fagetum indicates suitable condition in soil of zone.