Effect of trees canopy and topography on some chemical properties of forest soil (Case Study: The forest of Ilam province, Dalab)
Subject Areas : forestmahnaz karamian 1 , vahid hosseini 2
1 - دانش آموخته کارشناسی ارشد دانشگاه کردستان دانشکده منابع طبیعی سنندج ایران
2 - استادیار گروه جنگلداری دانشگاه کردستان دانشکده منابع طبیعی سنندج ایران
Keywords: Soil properties, Ilam, Site factors, Zagros forest, Tang-e-Dalab,
Abstract :
The sustainability of forest ecosystems a dependent on soil quality in duration time, conesquantly knowledge of forest soil situation and effects of land use on soil properties is very important for forest management. Degradation of zagros forest is caused that restoration those be very important. The purpose of this study was determination of relationship between altitude, slope and canopy on soil chemical properties. The study was carried out in Tang-e-Dalab in Ilam province on northern slope. Three transects were sampled in oak stand (Quercus brantii). In each transect, samples had 50 meters interval. Soil samples were collected from soil surface (0- 02 cm). Then Samples separately were located inside and outside of canopy in each transect. Overall were collected 60 samples. In each sample, altitude from sea level and slope percent were recorded. The results showed exchangeable K and Mg, EC decreased by increasing altitude in both inside and outside of canopy but pH has direct relationship with altitude. Moreover increasing of slope percent exchangeable K and Mg, EC , pH decreased in both inside and outside of while there was inverse relationship between exchangeableCa and altitude and slope inside canopy, but outside canopy it had direct relationship.
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