Comparative Study of Landform Mapping Using Terrain Attributes and Topographic Position Index (TPI): a Case Study in Al-Alamien – Ras El-Hekma Region, Egypt
Mohamed, S., Bahnassy, M., Gaber, H., Darwish, K. (2018). Comparative Study of Landform Mapping Using Terrain Attributes and Topographic Position Index (TPI): a Case Study in Al-Alamien – Ras El-Hekma Region, Egypt. EKB Journal Management System, 39(OCTOBER- DECEMBER), 596-605. doi: 10.21608/asejaiqjsae.2018.18884
Sami Z. Mohamed; M. Bahnassy; H. Gaber; Kh. M. Darwish. "Comparative Study of Landform Mapping Using Terrain Attributes and Topographic Position Index (TPI): a Case Study in Al-Alamien – Ras El-Hekma Region, Egypt". EKB Journal Management System, 39, OCTOBER- DECEMBER, 2018, 596-605. doi: 10.21608/asejaiqjsae.2018.18884
Mohamed, S., Bahnassy, M., Gaber, H., Darwish, K. (2018). 'Comparative Study of Landform Mapping Using Terrain Attributes and Topographic Position Index (TPI): a Case Study in Al-Alamien – Ras El-Hekma Region, Egypt', EKB Journal Management System, 39(OCTOBER- DECEMBER), pp. 596-605. doi: 10.21608/asejaiqjsae.2018.18884
Mohamed, S., Bahnassy, M., Gaber, H., Darwish, K. Comparative Study of Landform Mapping Using Terrain Attributes and Topographic Position Index (TPI): a Case Study in Al-Alamien – Ras El-Hekma Region, Egypt. EKB Journal Management System, 2018; 39(OCTOBER- DECEMBER): 596-605. doi: 10.21608/asejaiqjsae.2018.18884

Comparative Study of Landform Mapping Using Terrain Attributes and Topographic Position Index (TPI): a Case Study in Al-Alamien – Ras El-Hekma Region, Egypt

Alexandria Science Exchange Journal
Article 4, Volume 39, OCTOBER- DECEMBER - Serial Number 4, December 2018, Page 596-605  XML PDF (986.86 K)
Document Type: Original Article
DOI: 10.21608/asejaiqjsae.2018.18884
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Authors
Sami Z. Mohamed email 1; M. Bahnassy* 2; H. Gaber* 2; Kh. M. Darwish* 3
1Land and Water Technologies Department, Arid Land Cultivation Research Institute, City of Scientific Research and Technological Applications, Alexandria, Egypt
2Soil and Water Sciences Department, Faculty of Agriculture, Alexandria University,Egypt
3Land and Water Technologies Department, Arid Land Cultivation Research Institute, City of Scientific Research and Technological Applications, Alexandria, Egypt
Abstract
The aim of this study is to compare the classification of the landscape of the area located between Al-Alamien and Ras El-Hekma to landform classes using two different classification methods; the terrain attributes method and the topographic position index (TPI) method. Terrain attributes classification method derived from a digital elevation model and were overlaid using cell statistics to generate a landform map with seven classes. The landform classes were:  (1) Lower coastal plain (17.86%), (2) Upper coastal plain (43.61%), (3) Piedmont plain (2.33%), (4) Dissected escarpment (2.64%), (5) Plateau (26.79%), (6) Ridges and coastal bars (3.62%), and (7) Inland dunes (3.15%). The topographic position index (TPI) method which generate the landform classes uses only the digital elevation model. The generated landform classes were: (1) Valleys (2.1%), (2) Midslopes drainages and shallow valleys (1.1%), (3) Plains (92.77%), (4) Hills in plains (0.34%), (5) Mesas (2.44%), and (6) Ridges (1.25%). The comparison of the two methods showed that using the terrain attributes method was more detailed.
Keywords
Landform Classification; Soil Catena; Terrain Attributes; Topographic Position Index (TPI); Digital Elevation Model (DEM)
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