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Urban land use mapping: A case study of ahmedabad city and its environs |
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| Authors: | SK Pathan VK Shukla RG Patel BR Patel KS Mehta |
| Institution: | 1. Space Applications Centre, 380 053, Ahmedabad 2. Ahmedabad Municipal Corporation, 380 001, Ahmedabad 3. Town Planning and Valuation Department, TP&VD, Govt. of Gujarat, 380 009, Ahmedabad |
| Abstract: | Proper urban planning and effective implementation requires reliable urban land use statistics. In this context, satellite remote sensing data has been studied using both visual and digital techniques. A portable eight-band radiometer has been used to collect spectral signatures of surface features present in Ahmedabad city and its environs. Using these signatures a suitable approach employing visual and digital techniques has been developed for urban land use/sprawl mapping. Urban land-use maps of Ahmedabad city and its environs were prepared on 1:25,000 scale and for Ahmedabad Urban Development Authority Area on 1:50,000 scale using this methodology. It has been found that edge-enhancement techniques are useful to enhance the contrast among different urban land uses. Classification techniques such as MXL and Bayes classifiers are not successful in discriminating urban land uses. Tonal characteristics alongwith other elements of interpretation are required to classify urban land uses such as residential, industrial etc. Spatial distribution of various urban and uses and the space devoted to each urban land use has been brought out. |
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