The vegetation surveys and determination of stand structure in the forests of Bartın-Yenihan Region

This study was carried out the determination for site conditions, silvicultural properties and ground vegetation structure in oriental beech (Fagus orientalis Lipsky.) forests in the Yenihan Forest Range District. The mean annual precipitation, mean annual temperatue and soil type were determined for site conditions in the sample plots. Total 8 sample plots were selected in the different stand type for determination of stand structure and ground vegetation type. Structure and ground vegetation type. The crown areas, height breast diameter heights, age, wet and dry branch height were measured of all trees in the sample plots. The stand profile was drawn of each sample plots and amount of trees, state of layer, total height breast area, top height, diameter andage were determined for occured relationship about tress in the sample plots. The plant samples were collected for vegetation surveys in the research area. Later, species and taxonomy were determined of plant samples and frequency and degreee of cover were determined plants of the ground vegetation level in the sample plots by Braun-Blanquet method and high degree was observed cover of ground vegetation of the oriental beech stands in the Yenihan forest district. The enviromental factors are affected on plant species various. The stand canopy and enviromental factors are compared; the ratio of plant species various in the normal degree of canopy (%100) is higher than degraded forest stand canopy (%50). The region vegetation database was occuried in the research area by TURBOVEG package vegetation programme.