Analysis of the effect of land use on the stability of urban neighborhoods (Case Study: zone 1 District 14 in Tehran)

The process of urbanization is a global phenomenon around the world, wherever that person is resident, is taking place. The world's urban population increased 15-fold from 200 million in 1900 to about 2.9 billion in 2000 and increase to about 5 billion by 2030 experience is estimated.In developing countries, urbanization with natural population growth, rural-urban migration, rural and urban lifestyle convergence of political and economic processes associated with globalization. While urbanization is a major challenge in the development of sustainable social, economic and environmental, there has been appeals to the study of urban systems in the past few years. Urbanization upgrade rapid socio-economic development, But at the same time leads to many problems Such as strong population density, heavy traffic, lack of housing, lack of resources, loss of biodiversity, the islands of heat, noise and water pollution and air. Today urban sustainable development with different aspects has been a major challenge. However, from the perspective of the concept of sustainability more generally to reduce the consumption of resources and prevent pollution and ecological aspects are emphasized, but other aspects of sustainability, such as quality of life and well-being of human life today is perhaps more important. Urbanization growth rate of significant changes in land use method. This growth will not only damage the development of the area around, but also its outside the city from symmetrical shape. To be sustainable urban land use must meet current needs and future citizens together. The city managers, to the demands of today's citizens, land use change, without compromising the needs of future generations, take note. Most cities in developing countries lack the resources to effectively manage their land, while some governments have tried to balance socio-economic development and environmental issues, but the evidence shows that such efforts have not been effective. Sustainable development and land use planning concepts are valuable, but the real challenge comes when we want to put them in practice. Ideally have a comprehensive framework to guide decisions daily, personal, business or political decisions are incorporated in one place, but these targets given the complexity, ambiguity and thinking at the same time based on different scales display and are difficult to implement. So considering the information presented, providing a sustainable development model that accurately show the effects of changes in land use in urban sustainability required to appear. The purpose of this article using DCA (analysis and decision) in urban land use planning, using four indicators, land use change (LUC), LUM and HHI indices mixed land use and land use diversity index LUF is. Here benefiting from abilities geographic information system (GIS) explains to spatial analysis specified criteria within the study area 1 in 14 municipal districts of Tehran. This study combines descriptive and analytical methods and comparative tried to influence urban land use changes in sustainable urban development will be analyzed. With the aim of using this model, after explaining the circumstances and causes of the problem statement and objective performance indicators in this study has been determined. Three indicators of performance changes in land use, land-use mix and diversity of land use performance indicators considered in this study. Finally, the status quo is presented in placement decisions. In this study, analysis of land use maps of the area under study in order to investigate changes in land use in the study area, a data comparison and land use maps in 1375 and 1385. The percentage change any of the user's specified range . For the purpose of this study is to assess the impact of land use changes in urban sustainability, the incorporation of land use in the area using LUM and HHI index has been measured. Because each of these criteria in a way users can measure mixing is not necessarily the two criteria used. Incorporation index of land use degree to which land use activities have been separated from each other is measured. DCA model indicators measured in the neighborhood District 1 District 14 of Tehran. The purpose of this model is the expression of speech and objective conditions and performance indicators have been determined in this study. Performance indices: changes in land use, land-use mix and diversity of land use performance indicators considered in this study. Finally, the decisions of the status quo alternative has been proposed. Finally, based on the DEA model using the results of changes in land use and land use mix index and benchmark multiplicity of alternative land uses or plans to replace the status quo to achieve the ideal situation is presented. The results after three indices measure change, mixing and diversity of land use has shown that the northern areas of the study of land use change on the stability and mixing and many more users than the other areas have been stable area. Many urban elements are effective in urban sustainability, according to the concept of urban sustainability Pasion 5 Indexs may be considered, including natural stability, economic stability, political stability, social stability, and stability is physical. What has been considered in this study, the concept of urban sustainability is the next body. In addition, it can be concluded that the use of DCA model aimed at sustainable land use planning due to its ability to model was proper In the analysis of macro issues and problems combined with different sizes. In this context, urban design assist with must consider the land use sustainability criteria to the ideals expressed in the neighborhood at the community level to achieve aspirations of the central neighborhoods of urban sustainability objectives. In general, it can be concluded that the user changes their neighborhoods to urban sustainability and the incorporation of user and multiple user types and more, in terms of urban sustainability are more suitable conditions.