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Economic evaluation of dynamic changes and landuse in flood spreading areas (Case study: Dehloran flood spreading, Ilam province)
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Mohammadreza Jafari *   1, Jafar Rezaei1 |
| 1- Agricultural Jihad Natural Resources Research Center |
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Abstract: (132 Views) |
| bout 25 years have passed since the implementation of Flood Spreading projects in Iran, but it is not clear to what extent their implementation has been effective in the dynamics of dynamic processes in the field of distribution? Also, is it economically viable to implement these projects? Therefore, in this study, by sampling the Dehloran Flood Spreading project, first examine the effects of this project in terms of flood control, artificial groundwater aquifers, permeability, revitalization of vegetation and agricultural lands, then in terms of economic indicators, net present value. (NPV), capital return rate (ROR) and cost-benefit ratio (B/C) were evaluated. Then, in order to evaluate the economic characteristics of the project, the costs of constructing the flood distribution system include the costs of studies and designs, excavation and embankment, stone and cement, metal nets, planting, wages, rents and more. Miscellaneous expenses were estimated during the project implementation years (1996 and 1998). Annual maintenance and repair costs are also calculated according to the volume of operations performed each year. The results of the research showed that after the implementation of the plan, the flow pattern has become as a controlled network.Of the total fluid volume of the plain (16.6 MCM), 9.1 MCM was controlled and permeated, the permeability decreased from 17.95 (cm.h-1) to 13.57 (cm.h-1), the cultivation area range increased from 7772 (ha) to 10182 (ha) and forage production ranges from 50 (kg.ha-1) to 159 (kg.ha-1). Economically, the added value of the injected flood was 14600000 Thousand Rials, the value added by forage production was 1353958608 thousand Rials and the value added of agricultural sector was equal to 657050253 thousand Rials. According to the economic evaluation indices (NPV, ROR and B/C), which were evaluated 1398609424 Thousand Rials, 0.38 and 2.87 respectively. Therefore, the flood spreading project has a significant profitability and is economically feasible. |
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| Keywords: Zonation of Floods Spreading plains prone in Ilam province using of Multi Class Maps Model and Geographic Information Systems |
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Type of Study: Research |
Subject:
Special
Received: 2021/01/3 | Accepted: 2022/12/11
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