There is a close interrelation between vegetation and environmental factors in a natural ecosystem. The aim of this study is applicability of analytical hierarchy process for this relationship. To do so, logistic regression (that was done in it measurements of vegetation and environmental factors) was used as control method. At first, study area was divided into 33 homogeneous units on slope, aspect and elevation. Then, 26 designed questionnaires were filled for each site. Questionnaires were designed on the basis of three main criteria of soil, physiographic and climate and sub-criteria included soil, physiographic features and climatic characteristics. According to the presence of studied plant species in the criteria and sub-criteria classes, scoring was done for the environmental factor. Effective factors were prioritized and prepared in order to be used in Expert Choice for each plant species separately. Incompatibility coefficient of each questionnaire was also calculated.10 sampling plots were established and two soil samples were gathered from two depth of 0-15, 15-30 cm in each sampling site. 14 soil characteristics, 3 physiographic factors and 5 climate factors were measured. Most important factors affected on dominant species were determined with these environmental data, using logistic regression and were assessed using total accuracy of classification and correlation coefficient. The results of Logistic regression showed that from among the studied environmental factors, soil factors, physiographic and climatic factors in subsequent courses have a significant role in the distribution of species, respectively. Also AHP method is able to represent this connection well. If experts have sufficient knowledge about region, it is suggested to use method of less costly and time-consuming AHP than other more costly and time-consuming methods.