Volume 14, Issue 1 (4-2020)
مرتع 2020, 14(1): 47-61 |
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Abbasi Khalaki M, Ghorbani A, Esmali A, Shokoohian A, Jafari A. Site Selection for dry farming in sake of site restoration using AHP Case of: Balekhluchay Watershed. مرتع 2020; 14 (1) :47-61
URL: http://rangelandsrm.ir/article-1-865-en.html
URL: http://rangelandsrm.ir/article-1-865-en.html
Site Selection for dry farming in sake of site restoration using AHP Case of: Balekhluchay Watershed
Department of Range and Watershed Management, Faculty of Agricultre and natural resource, University of Mohaghegh Ardabibli, Ardabil
Abstract: (3234 Views)
The transformation of rangelands into dryland farming in vast areas and relatively short time regardless of certain roles and methods, leads to soil erosion and loss of productivity of the lands. Land abandonment is the final step of the process. For future generation needs however these lands should be converted into pasture or its original form. For this purpose, finding suitable places for rehabilitation projects, especially at macro level, is inevitable. In this regard, the hierarchical analysis process (AHP) was used. In this model, five main criteria including physiographic, climatic, soil, geomorphology and land use types plus 14 sub-criteria were selected. Physiography components such as elevation, slope angle and aspect were in one category. For climate, precipitation and temperature were the sub-criteria. For soil factors, texture, depth, Ec, pH and organic matter were used as sub-criteria. Geomorphology has geology and erosion components. And land use with 11 elements took part in the model. The results of the calculations showed that the most influential criteria were physiography and climate with the weight of 0.426 and 0.270 respectively. Soil and land use factors were the next in terms of importance value. The geomorphology stood at the lowest priority with the weight of 0.055. The results also showed that 26437 hectares of eligible land (low yield and abandoned land) equivalent to 44.62% of this land (highest level) are moderately suitable for the restoration. The small piece of lands equal to 3603 hectares (6.08%) are unsuitable for reclamation. Also, 1983 ha (3.35%) of dry farms are very unsuitable for restoration while 15780 ha (26.63%) are very suitable. In general, the use of the hierarchical analysis method is a cost-effective way to determine the most/least suitable lands for restoration and/or conversion to the pasture. And AHP can help managers and planners to make a better decision.
Keywords: Modeling, GIS, Land Use, Low-yield dry farming land, Abounded dry farming land, Restoration Potential.
Type of Study: Research |
Subject:
Special
Received: 2020/04/30 | Accepted: 2020/04/30 | Published: 2020/04/30
Received: 2020/04/30 | Accepted: 2020/04/30 | Published: 2020/04/30
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