The purpose of this paper is to analyze the Utility operating radius and service on city parks in Ardabil neighborhood, local, regional and urban level, to investigate the relationship between the distribution of these parks with water levels in the city of Ardabil, including Shorabil lake and Balyqlv river and reviews for distribution park. The data and information used by documentary. To analyze the data, the Thyssen polygons to measure the radius of the functional utility, network analysis to assess radius of the service or coverage of parks, and standard deviation ellipses analysis was used to examine the distribution of parks. The results indicate that the function of the radius of the park in the center of the city were favorable and neighboring areas with high water levels in the periphery of the city were unfavorable. In addition, the test also showed that the standard deviation ellipse for distribution parks in the city of Ardabil in the Northeast, Southwest and more in the direction of the river Balyqlv located. Also, investigating the per capita levels of parks in urban areas determined that, the area 2 municipality per capita is highest among municipality areas and the area 4 municipality has lowest per capita among municipalities.   Keywords

This article, with a focus on the change and transformation process of the approaches and trends affecting the new towns policy, scrutinizes the first and second generations of the new towns in reference to the South Korea as a case study. The first generation of new towns development in South Korea is associated with the rapid growth of urbanization, industrialization and subsequently economic increase of this country. Lack of housing and inadequate housing supply, formation and growth of the informal settlements especially in connection with Seoul, and the subsequent centralization in the Seoul metropolitan area are the main and significant urban challenges of South Korea in this period. The second generation of new towns has been planned first with the aim of housing supply as their main function in the capital region. These cities are the result of approach that follow the qualitative, gradual and planned development in the form of small scale but multiple projects compared to the past. Decentralization of Seoul and Seoul metropolitan area, integrated regional development, and ultimately the balance of South Korea’s national territory are the key purposes of this process, in terms of spatial planning.

The process of proposing solutions to solve the problems of the capital, after undergoing different stages has reached to the law of feasibility study of transmission of the political center of the country and reorganization and decentralization of Tehran. The aim of this study is to address Article one of this law, and offering reorganization and decentralization pattern. The research method is descriptive and analytical and it is an applied research. Data collection was conducted by documents, and survey research. The results suggest that we should discard the first part of this law and replace it with the reorganization and decentralization solutions. Also the results indicate that items including lack of strict enforcement of existing laws, point-wise look to Tehran and not considering the urban area as a whole, lack of attention to the problematic aspects of centralization (economic aspects), lack of simultaneous development of organization and decentralization policies have all weakened the organization and decentralization policies to some extent. In this regard, the list of strategies were derived from literature review extracted and were screened using the Delphi method. Finally, 30 key strategies in the template of reorganization and decentralization pattern of Tehran was approved by Delphi panel members.

One of the critical issues related to sustainable urban in twenty-first century, is the growth and development of the city in space and on this basis, the civil management was forced to think about urban development. Tehran metropolis with its growing, developing immersive and without physical, environmental instability surrounding the statue has arrived. One of the ways for decentralization and redistribution of the population and facilities thought in spatial planning is the, urban development and building new settlements around the metropolis which must meet the criteria of environmental, social, economic, physical, geographical distance, etc. be considered in studies not lead to environmental catastrophes. The method of this research is descriptive-analytical and its target is applied using the K-means and FCM's clustering methods to check this important. To evaluate the quality of the environment and determine optimal sites for the development the new cities in Tehran province in 3 pm base (man-made environment, social environment, economic environment and the natural environment) with a total of 22 indexes are used. The analysis and processing of indices for the paper two environments Matlab2013 and Arc GIS software was done. The results of clustering using FCM and overlay in the form of maps showing which areas are suitable for urban development in the East and South of Tehran. Also the plan was prepared by K-means that we can be used to provide strategies and integrated management areas.