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Title

Landforms classification by Topographic Position Index and assessment of the relation between landforms and lithological features

Pages

 Start Page 30 | End Page 45

Keywords

Topographic Position Index (TPI)Q1
Deviation from mean elevation Index (DEV)Q1

Abstract

 The main objective of this study was to classify landforms by Topographic Position Index and assessment of the relation between landforms and lithological features. In order to classify landform, the 10 m Digital Elevation Model (DEM) and Geology map (1: 100000) was used. In this paper Topographic Position Index and the deviation from mean elevation (DEV) were used for classification of landforms. The result showed that, the valley was the largest category, with 33. 37 %. The lower slopes was the lowest category, with 5. 63 %. Each of the other four categories (flat area, middle slope, upper slope and ridge) represented between 5. 8 % and 30. 79%. According the results, the most variable classes were the valley, increasing from 20. 62% (50 m) to 55. 7% (750 m), and the middle slope area, decreasing from 6. 4% (50 m) to 1. 01% (750 m). The results of ANOVA showed a significant relationship at 99% probability level for landform classification map and geology formation map. More than 60% of limestone (OMl, El, TRjm, K2, TRkh, Jgr-vc, OMas, K1) were in middle slopes, upper slopes and ridge.

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