Abstract
Optimal locations for public facilities such as public parks are significant issues in the urban planning of Larkana city. Therefore, specifically, Larkana city of Pakistan is selected as the study area where the land suitability model was applied to determine suitable land for public parks. This study was carried out within the framework of an Analytic Hierarchy Process (AHP) as a multi-criteria evaluation approach by integrating it with the Geographic Information System (GIS). Decision support system software called Expert choice 11.5 was used to calculate the weights based on three alternative scenarios. Computed composite weights were inserted into the spatial analysis function of GIS and produced three scenarios of suitability maps, i.e.: (a) land availability, (b) land value and (c) population density. Hence, based on the analysis and findings made in this research, finding suitable locations using the land suitability model for future park development is highly helpful. Results can be useful in the planning of public facilities and future land use planning in Larkana city.
Highlights
Where: Wi = relative importance or weight of factors/parameters i, Vi = relative weight of parameters i, and n = total number of parameters related to the study
This study has focused the use of integrated multi-criteria Analytic Hierarchy Process (AHP) with Geographic Information System (GIS) to determine the suitability of the land for parks in the city of Larkana
The results show that scenario 3 (Population density) obtained the highest percentage of potential land (69%), while scenario 2 obtained 64% and scenario1 (Land availability) 10%
Summary
Where: Wi = relative importance or weight of factors/parameters i, Vi = relative weight of parameters i, and n = total number of parameters related to the study. The land suitability analysis was performed in the raster format. The raster data model is the more suitable technique because the structure of raster data is grid cell based, which can delineate suitable sites. Raster data facilitates the user in carrying out a weighted overlay on numerous layers. Suitability maps were created under a raster GIS environment, based on various scenarios. The suitability for each land use was analyzed in ArcGIS 9.2 to locate suitable areas for parks
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