Artificial forests can influence both plant biodiversity and soil properties. This study mainly aims to determine and compare the status of plant biodiversity of ground floor and some physic-chemical properties of soil under influencing of plantation with conifer and broad leaved species. Three sites (Conifer, broad leaved and non planted site as control) were selected in Sanandaj (Dushan region). These sites were Physiographicaly and climatically similar. Systematic Random Sampling was used as a method for data gathering. In each site 20 circular sample plots with 400m2 area were selected as main samples (60 plots totally). 4 microplots (1.5*1.5m) were selected in each plot in order to determine the kind and frequency of herbal species. 3 soil samples were selected in center of each plot in depth of 0 to 3ocm in order to studying of physic-chemical properties of soil under influencing of planted species. The data was analyzed applying SPSS and Excel software, using complete randomized design. The results showed while the plant biodiversity and frequency on ground floor under influence of plantation with broad leaved species was maximum, the evenness index was minimum. There was significant deference (α=5%) between all sites regarding porosity however there was no deference from point of view other physical parameters. More over there were significantly (α=5%) differences between most chemical parameters of soil of three sites.
