Evaluation Of Urban Green Space Development Using Geospatial Techniques: A Case Of Adama Town

Abstract

Urban green space is one of the essential components of the urban environment. It has various environmental, social, and economic benefits to city dweller urbanization posed significant challenges to green space development of Adama town. In Ethiopia it is hard to meet the standards of green infrastructure correspondingly Adama lacks standardized greenery of the street tree and city parks thus, This study aims to evaluate the urban green infrastructure development .specifically the objective of this study is to: evaluate existing urban green infrastructure with the master plan, generate factors for suitability site selection for urban green infrastructure (UGI), drive suitability map for urban green infrastructure, evaluate existing UGI with the proposed suitability map. This study evaluation of the implementation of CMP 2004 for UGI was performed by taking into account the locational aspect of the UGI. The result indicates 181.32 ha (23.86 %) areasof the proposed UGI of CMP 2004 were changed into a settlement, cropland and bare land due to the increment of population, for firewood and grazing purposes.The study was used sentinel2A, master plan, DEM and point data to evaluate UGI in the study area. The methodology adopted in this research includes the generation of road, stream, slope, land use land cover, soil, population maps using GIS techniques. The pairwise comparisons method was used to estimate the weight for factors by creating a ratio matrix. A suitability map of the study area was generated using a spatial analysis tool which is used to select the potential site for the UGI of the study area. Moreover, based on GIS-based multi criteria analysis results of the analysis were the highly suitable area 105.39 ha (0.83 %),suitable area 2151.2 ha (16.94%), moderately suitable area 7748.28 ha (61.02 %), and less suitable area 2672.37 ha (21.05%) and the unsuitable area was 20.57 ha (0.16%). To conclude, GIS technologies can play a crucial role in urban research which strongly helps the site selection process to establish urban green spaces. Besides, it has outstanding spatial problem-solving capabilities and performs a more systematic suitability analysis, which has been used to help spatial decision-making, and AHP is a versatile and practical tool for selecting urban green areas in the study area.