Geographical Engineering of Territory

Geographical Engineering of Territory

Examining the landslide risk in Watershed of Khaniam, Tonekabon , using Analytic Hierarchy Process (AHP) and Analytical network process (ANP)

Authors
somayeh emadodin 1
fatemeh salimzadeh 2
saleh arekhi 1
1 Assistant Professor, Department of Geography, Faculty of Literature and Human sciences, Golestan University, Gorgan, Iran
2 MA in Environmental hazards, Department of Geography, Golestan University, Gorgan, Iran
Abstract
To examine the landslide hazard in the area under study, Khanian (located in the West of Mazandaran province and Southeast of Tonekabon), AHP and ANP methods were used. Ten layers including lithology, distance from fault, slope, Aspect, Elevation, land use, distance to road, rainfall, distance to river, and Density of springs are considered as effective factors on the occurrence of landslide.. Study results showed that ANP is more accurate than AHP. Because prioritizing the effective factors in ANP is more sensible and acceptable; meanwhile, concerning the effective factors on landslide in ANP, land slope, land use, and lithology are the most significant factors on landslide development. As, ANP makes it possible to compare the sub criteria. This is also proved by field visits. However, results of AHP reveals that lithology and land use play the most important role in landslide occurrence and its expansion in the area under study and other factors indeed control and intensify the other two factors.
Keywords
Land slide
AHP
ANP
Khanian watershed
Tonekabon
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Geographical Engineering of Territory
Volume 6, Issue 2 - Serial Number 12
Summer 2021
Pages 411-427

  • Receive Date 09 January 2021
  • Accept Date 11 June 2021
  • Publish Date 22 June 2022