this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...

in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...

The current study used habitat suitability index to evaluate habitat suitability of Servak forested area located near Yasouj for the Persian squirrel. Habitat variables including elevation, slope, aspect, density of vegetation cover, height of tree, tree diameter, canopy area of tree, distance to roads, distance to villages, and distance to rivers were used in this evaluation. Results showed th...

Tamarix sp. Shrub species are extended in steppe and salt marsh areas. These species have adapted to the most hard climatic conditions. Therefore, it is distributed in the driest regions of Iran. The native plants are rarely used for landscape in Iran. So, identifying native plants that has the potential to be ornamental, in addition to the attractiveness of landscape can prevent soil erosion. ...

Natural regeneration is one of the key aspects of forest sustainability and a tool to decide on restoration programs in forest areas. The purpose of this study was to investigate the quantity of natural regeneration of Acer campestre L. as one of the most important tree species in Arasbaran forests and its relationship with elevation changes and structural characteristics in the natural stands....