Mohammad Jafari; Hossein Azarnivand; Mahshid Souri; Seyedeh Khadijeh Mahdavi
Volume 21, Issue 1 , June 2014, , Pages 95-108
Abstract
Water deficiency and low soil moisture, are considered as limiting factors in rehabilitation and improvement of semi-arid rangelands. Considering the problem of water deficiency and low soil moisture in pastures discussed, rainfall storage projects can be one of suitable strategies to compensate for ...
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Water deficiency and low soil moisture, are considered as limiting factors in rehabilitation and improvement of semi-arid rangelands. Considering the problem of water deficiency and low soil moisture in pastures discussed, rainfall storage projects can be one of suitable strategies to compensate for water shortages in such areas. On the other hand, considering several criteria that must be considered in this selection, makes it difficult to choose the appropriate locations to execute projects such as pitting and furrowing. These factors include technical and social-economical criteria. Meykhoran region in Kermanshah Province was considered in this research. In this study, in order to locate suitable areas for pitting and furrowing projects, spatial decision support system were used in three stages. The first stage involves determining hierarchical levels consisting of object, criteria, sub-criteria, and factors. During the second stage, the standardization of criteria based on fuzzy logic, weighting criteria and sub-criteria based on analytical hierarchy process, and paired comparisons of criteria and sub-criteria, with preference values of one to nine and an inconsistency rate of less than one-tenth, were done in ARC-GIS software by using AHP subprogram. In the final step, after integration of these layers, the final maps of optimal sites for pitting and furrowing were prepared. Using this template to locate other natural resources projects will help to optimize use of spatial data, save time and costs.
Omid Karami; Seyed Mohammad Hosseini Nasr
Volume 20, Issue 1 , June 2013, , Pages 101-114
Abstract
Determination of land capability for optimal use of land and prevention from land degradation due to improper use is an effective step towards sustainable development strategy. Due to the importance of the issue, in this study, ecological capability of Babolrood basin-Mazandaran for range management ...
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Determination of land capability for optimal use of land and prevention from land degradation due to improper use is an effective step towards sustainable development strategy. Due to the importance of the issue, in this study, ecological capability of Babolrood basin-Mazandaran for range management was evaluated using Analytical Hierarchy Process (AHP) and Geographic Information System (GIS). Thus, the hierarchy of evaluation process was created and the weights of criteria and indicators were computed using expert's judgments and indicators were mapped in GIS environment. In final step, ecological capability map of range management was generated using GIS-based Weighted Linear Combination (WLC) technique. Results showed that 78.94% of the study area had no capability and 1.21, 13.02, 6.7 and 0.13% of the study area had the class capability of first, second, third and fourth, respectively.