Evaluating Land use Mixed-ness on Street Level through Spatial Analyses and Gini Method

The increasing use of motor vehicles is one of the consequences of urbanization, which in addition to problems such as traffic and air pollution, will reduce the physical activity of residents and affect the general health of society. As a result, one of the most effective ways to tackle this problem in recent decades has been to increase people's accessibility to a variety of land uses by reducing travel distance or properly mixing land uses. Therefore, this challenge has led various researchers around the world to seek new ways of urban management to solve this problem. One of the most significant approaches to increase accessibility is proper mixed land use in urban areas. This study aims to calculate equality in the distribution of urban uses along the street network of Valiasr neighborhood, located in District 6 of Tehran Municipality by using GIS as a spatial analyst tool and Gini index as an indicator for the level of justice in distribution. Based on the number of land uses among longitudinal deciles of each street, this analysis has determined the level of equality in the distribution of land uses by the Gini index, for each passage and the whole neighborhood. The findings show that the Valiasr neighborhood with a Gini index of 0.3 owns a relatively good equality in the distribution of land uses. In addition, a comparison of the results with the findings of other studies reveals that the Gini index of each neighborhood can be a good indicator to measure the landaus mixed-ness, walkability, and accessibility to urban and transportation infrastructure in a region. Besides, it can be used along with other factors in regional or urban planning due to the justice-oriented essence of Gini index.