SUMMARY
This research examines the influence of soil on spruce from the biometrical and auxologicalpoint of view, highlighting the correlation between soil and vegetation. The researches have as subjectthe stands being at the same altitude, climatic and vegetation conditions, but which were developed ondifferent soils. Objectives of the research were pursued to establish a relationship between the type ofsoil and biometrical and auxological characteristics of the forest vegetation. The research wasdeveloped in Cindrel Mountains, Rasinari Forest District and Oncesti District. On experimental areasthe forest vegetation was full inventoried and determinations of physical and chemical properties ofthe soil were made. Biometrical and auxological calculations on trees have targeted the followingcharacteristics: diameter, height, growth rate and some quality indicators. The soil has been study fromthe main characteristics point of view, as ecological determinants: pH, degree of saturation in bases,skeletal content, and physiologically useful volume. It has been also made observations on theindicator flora and forest site reliability. The results, collected from the experimental area andstatistically processed were presented in tabular form and the biometric and auxologic indicators wererepresented in graphics for a better expressiveness. The results analyses conduct to conclusionsregarding suitability of soils for forestry vegetation. At the same time, the soil type influences directlythe characteristics of forest vegetation, leading to significant difference of biometric and auxologicindicators.