Estimation Method of Soil Erosion Using Integrated Method of Geomorphology-AHP, Case study: Latian catchment, Iran

Document Type : Research

Authors

1 Assistant Professor at the International Desert Research Center of Tehran University

2 Professor of Watershed Department, Islamic Azad University, Science and Research Unit, Tehran, Iran

3 Professor of the Reclamation Department, Faculty of Natural Resources, University of Tehran

4 Assistant Professor of Reclamation Department, Faculty of Natural Resources, University of Tehran

5 Assistant professor of the regeneration department of the Faculty of Natural Resources, University of Tehran

Abstract

Various erosion models have been introduced since the beginning of the 20th century. However, application of these empirical models has been limited to specific climatic and geographical conditions.  In the previous models, a method was developed to assess soil erosion based on land use information. In this paper, we present another approach that uses environmental data to assess soil erosion. This article presents one of these efforts in applying Analytic Hierarchy Process (AHP) which has shown promising results in estimation of soil erosion. In this regard, total six criteria(vegetation, soil, topography, land use, climatology, geology) and sixteen indicators(percentage coverage vegetation, growing forms, soil texture, infiltration, organic matter, slope, aspect, land use, type of precipitation, average annual rainfall and lithology) were considered. The weight of each thematic layer is determined through the AHP technique. This model is then applied in predicting soil erosion. The results indicate that the presented methodology is practicable for establishing a risk assessment model for soil erosion.

Keywords

Watershed Management Research
Volume 28, Issue 3 - Serial Number 108
September 2015
Pages 92-110

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History

  • Receive Date: 26 May 2011
  • Revise Date: 18 March 2014
  • Accept Date: 20 April 2014

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