The Effect of Conservation Intensity on the Plant Species Biodiversity in the Protected Area of Oshtrankooh in Lorestan

The effect of conservation intensity on the plant species biodiversity in the protected area of Oshtrankooh in Lorestan in the Zakros mountain ranges was investigated. To this aim, the biodiversity indices between the core and peripheral zones were compared in this study. In order to study the plant biodiversity, 16 plots in an area of 20Í20m2 were selected in order to count the woody species, and 3 sample plots as the microplots in an area of 1Í2m2 and the sum of 48 microplots were randomly selected for studying the herbal species from each of the sample macroplots. The number and list of plant species in the macroplots and the number and list of herbal species in the microplots were recorded. The sample plots were collected from the altitudes betweem 1600- 1800 above the sea level and in the range slopes between 30 to 65 degrees in the spring of 1386 (2009). Due to the data normality, the non-paired t-test was used to compare the two zones. The data showed that the biodiversity indices, based on tree and plant species, are greater in the peripheral zone than in the core zone from the mean evenness indices, and based on the herbal species, the mean indices of the dominant species are greater in the core zone than in the peripheral zone, and the mean indices of diversity and the richness of the herbal species are greater in the peripheral zone than in the core zone. Based on the total species observed (tree, plant and herbal), the means of biodiversity, evenness and richness indices are greater in the peripheral zone than in the core zone.