Mathematical model of visual quality of land appearance in identifying ecotourism goals of Haraz basin

The worries and concerns of today's human societies have caused serious damage to the human spirit, so man returns to the natural environment to escape from this space. Therefore, ecotourism is one of the growing industries in the world. There are many criteria and definitions for identifying the potential of the environment Which has sometimes caused it to be unmeasured. Since the beauty of the landscape is the main element that is faced in the natural environment in relation to tourism and recreation and not only benefits the viewer but also has an important contribution to the overall desirability of an area. Therefore, in order to understand the aesthetic values of the landscape, one must go beyond the process of identifying the physical and biological signs in the landscape.Therefore, in this study, using 19 tourism index points in Haraz basin, 19 criteria with different topics were evaluated. In this study, environments were first classified by clustering method. Then, effective criteria were extracted by principal components method. Finally, by modeling the linear regression, the criteria were imaged in a step-by-step manner with four criteria (vegetation, texture, unique effects and effect quality) and the visual image value was estimated with 80% accuracy.