Volume 13, Issue 26 (12-2022)
J Watershed Manage Res 2022, 13(26): 203-214 |
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Sadeghi Ravesh M H. (2022). Sensitivity Analysis of Combat Desertification Strategies in Fuzzy Environment in Yazd-Khezrabad Sub-Catchment (Saduq County). J Watershed Manage Res. 13(26), 203-214. doi:10.52547/jwmr.13.26.203
URL: http://jwmr.sanru.ac.ir/article-1-1197-en.html
URL: http://jwmr.sanru.ac.ir/article-1-1197-en.html
Islamic Azad University
Abstract: (1555 Views)
Extended Abstract
Introduction and Objective: Desertification is a complex socio-economic issue resulting from the interaction of several factors. This phenomenon is always in uncertain environments and is strongly influenced by vague and implicit judgments. Therefore, the use of multi-criteria fuzzy decision-making mechanisms seems necessary in evaluating desertification strategies. On the other hand, often the input data to these devices are inaccurate and variable. So, performing sensitivity analysis on output data is an important step in such evaluations. The aim of this study was to analyze the sensitivity of priority strategies in the Yazd-Khezrabad sub-catchment in central Iran.
Material and Methods: In order to achieve this goal, first in the framework of fuzzy multi-criteria decision-making method and with using triangular number, fuzzy pairwise comparison decision matrix was formed and the initial priority of strategies was estimated. Then the sensitivity analysis process was performed separately on the criteria and strategies in the framework of the Triantaphyllou-sensitivity analysis model. Following the determination of the most sensitive criteria and strategy, new weights of criteria and strategies were replaced based on the most sensitive criteria and strategy in the decision matrix. By calculating the weighted average of each row of the modified normalized matrix, the degree of preference or final weight of the strategies was estimated.
Results: The results showed that the adjustment strategy in groundwater abstraction (A31) is still considered as the most important strategy as the initial results with a degree of preference of 92.9%. While the ranking of other strategies has undergone serious changes.
Conclusion: It is concluded that according to the mentioned macro strategy, the process of desertification can be slowed down and the destroyed areas revived by implementing aquifer projects, improving irrigation methods, land improvement, controlling the growth of industries and aquaculture crops.
Introduction and Objective: Desertification is a complex socio-economic issue resulting from the interaction of several factors. This phenomenon is always in uncertain environments and is strongly influenced by vague and implicit judgments. Therefore, the use of multi-criteria fuzzy decision-making mechanisms seems necessary in evaluating desertification strategies. On the other hand, often the input data to these devices are inaccurate and variable. So, performing sensitivity analysis on output data is an important step in such evaluations. The aim of this study was to analyze the sensitivity of priority strategies in the Yazd-Khezrabad sub-catchment in central Iran.
Material and Methods: In order to achieve this goal, first in the framework of fuzzy multi-criteria decision-making method and with using triangular number, fuzzy pairwise comparison decision matrix was formed and the initial priority of strategies was estimated. Then the sensitivity analysis process was performed separately on the criteria and strategies in the framework of the Triantaphyllou-sensitivity analysis model. Following the determination of the most sensitive criteria and strategy, new weights of criteria and strategies were replaced based on the most sensitive criteria and strategy in the decision matrix. By calculating the weighted average of each row of the modified normalized matrix, the degree of preference or final weight of the strategies was estimated.
Results: The results showed that the adjustment strategy in groundwater abstraction (A31) is still considered as the most important strategy as the initial results with a degree of preference of 92.9%. While the ranking of other strategies has undergone serious changes.
Conclusion: It is concluded that according to the mentioned macro strategy, the process of desertification can be slowed down and the destroyed areas revived by implementing aquifer projects, improving irrigation methods, land improvement, controlling the growth of industries and aquaculture crops.
Keywords: Combat Desertification, Fuzzy linear programming, Pirewise comparative, Triangular Fuzzy Number, Triantaphyllou model
Type of Study: Research |
Subject:
ساير موضوعات وابسته به مديريت حوزه آبخيز
Received: 2022/05/6 | Accepted: 2022/08/22
Received: 2022/05/6 | Accepted: 2022/08/22
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