Assesing the adequecy of urbang green spaces in proposed planning decisions using GIS

In the literature, the adequacy of the urban green spaces have been discussed for a long time. Most of the time, the adequacy of the urban green spaces are tested using per person green areas. Discussing the adequacy of urban green spaces with more parameter is possible, but the adequacy of urban green spaces in proposed planning decisions are evaluated in terms of distribution in this study. The distances from the users are often neglected and accessibility measures are usually based on Euclidean distances. In this study, the distribution of the urban green spaces is measured by using the nearest neighbor distance methods within the framework of point pattern analysis. This measurement is presented in two ways, and two results will be compared. One of the methods is Nearest Neighbor Distance Method which the distance of two points is measured by Euclidean distance and the other method is Network Nearest Neighbor Distance Method which is integrated the real world. This method will be calculated by SANET, the GIS-based tool for spatial analysis along networks. The study is conducted using development plans for Seferihisar, which is a district of Izmir. A total of 11 neighborhoods are present in the Development Plans of Seferihisar and the plan decisions are assessed at the neighborhood level. In this research, the results from the two nearest neighborhood analyses show that, the distribution of proposed urban green spaces are not uniform or dispersed, which would be the ideal distribution over the cityscape. This finding is valid for both the nearest neighborhood analysis based on Euclidean distances and the nearest neighborhood analysis based on network distances. Consequently, that can be accepted as a failure in planning decisions. In this case, it is revealed that the urban green spaces are planned independently from each other.