The concept of beauty has been always an important concern for philosophers and scientists. In recent decades, landscape aesthetics as an effective approach in recognition and understanding the environment, has played an important role in landscape literatures. Therefore, recognizing different orientations in designing landscape aesthetics and indices for preferences in aesthetics have been considered necessary for studying in this field. This paper has started by proposing this question: what is the ratio of indices of environmental aesthetics in urban landscape. To answer this question, it can be proposed that, through formulating the aesthetic indices, a model to understand the beauty of the environment based on its constituent components can be achieved. Methodology of this study is qualitative and the literature in the field of urban landscape aesthetics have been studied through library studies while aesthetic indices were achieved using logical reasoning and studying relevant resources. Furthermore, different approaches in urban landscape aesthetics have been studied and analyzed in this paper, in order to find a meaningful relation between indices and respective approaches. In order to suggest a conceptual model, four main keywords were identified that indicate on urban landscape aesthetic, including: sensation, understanding, conception and aesthetic judgment. Finally the suggested model suggests aesthetic of urban landscape include four stages: study of objective elements in urban landscape, study of organizational factors of elements that lead to excitation potential, study of intellectual property derived from environment and study of aesthetic response of human to the environment.
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