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مهندسی اکوسیستم بیابان، جلد ۷، شماره ۲۱، صفحات ۴۵-۵۸
عنوان فارسی کاربرد روش‌های تصمیم‌گیری چندمعیاره در تعیین نقاط مناسب برای احداث سازه‌های جمع‌آوری آب باران
چکیده فارسی مقاله کمبود آب در کشور ایران، به‌خصوص در مناطق خشک و نیمه‌خشک، همواره مشکل‌ساز بوده است. در این تحقیق، به‌منظور مکان‌یابی سازه‌های استحصال آب در شهرستان راور، از ترکیب روش‌های تصمیم‌گیری چندمعیاره و سیستم اطلاعات جغرافیایی استفاده شد. نتایج این تحقیق نشان داد که از معیارهای مورد استفاده در این تحقیق، به‌ترتیب بر اساس وزن به‌دست‌آمده از پرسش‌نامه‌های تکمیل‌شده توسط خبرگان، شامل معیارهای بارندگی، شیب، شوری، پوشش گیاهی، بافت، ژئومورفولوژی با وزن‌های 362/0، 298/0، 151/0، 82/0، 53/0، 51/0 است. پس از تلفیق لایه‌های اطلاعاتی مربوط به هر معیار، نقشه‌های نرمال‌شده، در وزن هر لایه ضرب و نقشۀ تجمیع‌شده، طبقه‌بندی شد. بر این اساس، منطقۀ مطالعاتی به چهار دستۀ کاملاً مناسب، مناسب، تناسب کم و بسیار نامناسب تقسیم‌بندی شد. مناطقی که بر اساس هریک از معیارها امکان اجرای پروژۀ مذکور را نداشتند، با استفاده از روش بولین به دو کلاس صفر و یک طبقه‌بندی و مناطق نامربوط از نقشۀ تناسب حذف شد. نتایج به‌دست‌آمده با واقعیت زمینی که همان پروژه‌های اجراشده در منطقه است، مقایسه و صحت کار ارزیابی شد. نتایج نشان داد که نقشه‌های به‌دست‌آمده با میزان صحت 8/65درصد با واقعیت زمینی مطابقت دارد.
کلیدواژه‌های فارسی مقاله مکان‌یابی، جمع‌آوری آب، تصمیم‌گیری چندمعیاره، استحصال آب،
عنوان انگلیسی Application of multi-criteria decision-making methods in identifying suitable points for rainwater harvesting
چکیده انگلیسی مقاله Introduction: Deficit of rainfall and consequently, water scarcity is one of the most important problems in arid and semi-arid areas. Water collecting structures have a positive effect on light textured lands due to deposition of clay and organic matter, as well as controlling the floods will enhance the vegetation (Abdollahi et al., 2015). Water Collection in order to store surface water runoff, especially during periods where water availability is limited, is an appropriate option in dry areas (Nazarian and Najafinejad, 2015). Due to the numerous criteria and indicators (such as geomorphology, climate, soil, vegetation etc.) in choosing the type of efficient operation and the most suitable areas for their design and implementation, it is practically difficult to select the correct operation with the expected accuracy (Mia and Skumann 2007); Therefore, one of the most important and essential steps in the application of rainwater collection systems is to identify suitable sites for the implementation of these projects. A general overview of resources shows that collecting and storing rain water in arid areas is one of the best techniques for managing and using rainwater and it is a suitable method to provide the required water in arid and semi-arid areas. Rain water collection requires a spatial assessment and hydrological studies of surface and ground water (Nazarian et al. 2015). The main purpose of this research is to determine the most important criteria for locating suitable areas for rainwater harvesting as well as mapping these locations. Materials and methods: In this research, based on the results of completed questionnaires from experts, as well as by referring to the research background in this field, to select appropriate areas for collecting water, slope criteria, rainfall, vegetation, salinity, soil texture and Geomorphology were considered as main criterias. Layers were classified in the ArcGIS software. For weighting the criteria, using the AHP technique, matrixes of paired comparisons were created and using the expert opinion, the value of each criterion was determined and the results were entered into the Super Decision software. Land suitability map was made by combining layers. and the map was compared with the Boolean map. In order to verify the accuracy of the results, Land suitability map was compared with a map of successful and unsuccessful executives' work in the. Results: The final suitability map was obtained as follows. The map is divided into four classes, perfectly suitable, appropriate, slightly suitable and very inappropriate. the area of each of these categories listed in Table 1. Figure (1): Final suitability map < /strong> Tabel (1): Area of each category of suitability Area (ha) Present area inappropriate 53154 31 very inappropriate 18288 10.7 slightly suitable 47474 27.7 appropriate 38144 22.3 perfectly suitable 14324 8.3 Comparison of implemented projects in the region with modeling shows that 67.5% of the successful structures are in perfectly suitable range, while unsuccessful structures do not have any overlaps with a perfectly suitable range. Discussion and conclusion: In this research, using AHP, areas were zoned for the implementation of rainwater harvesting projects. The results showed that among the used criteria, the highest score was attributed to rainfall. While this criterion had the lowest value in the study conducted by Yousefi et al. (2015). The reason for this difference can be due to experts' experience of unsuccessful structures in the region. Nevertheless, the results of Ali Kasi (2010) and Al-Adamat (2010) regarding the rainfall criterion are consistent with the present research. After rainfall, the criteria for gradient and salinity were the highest scores respectively. The results showed that slopes of 3 to 8 percent achieved the highest score. The results of this study are consistent with the results of Bulcock et al. (2013) and Akbarpour et al. (2015). Vegetation, soil texture and geomorphology criteria were ranked in subsequent grades, respectively. Places with less vegetation require more attention in terms of providing moisture and increasing coverage. This is in line with the results of Zarrin Abadi and Vaezi (2016). Medium to semi-heavy soil texture has a better suitability for rain water collection. Results showed that, sandy clay loam texture had had the highest score among the sub-criteria. This texture appears mainly in the northern parts of the region, and the results of Akbarpour et al. (2015) confirmed this result. Between geomorphology criteria Epandage pediments had the highest score due to suitable slope and grading. The important point is that overlapping information in the GIS without analyzing and performing multi-criteria evaluation operations cannot provide the right planning and decision. Also, when different factors interfere in decision making, their priorities and weights should be determined. Results of modeling in this research is consistent with the results of Ali Khasi (2010), Yousefi et al. (2015), Gohari (2015), Ketsela (2009) and Singh et al. (2017).
کلیدواژه‌های انگلیسی مقاله مکان‌یابی, جمع‌آوری آب, تصمیم‌گیری چندمعیاره, استحصال آب
نویسندگان مقاله محسن نوروززاده |
دانشکده کشاورزی و منابع طبیعی دانشگاه اردکان

محمد جواد قانعی بافقی |
گروه مدیریت مناطق خشک و بیابانی، دانشکده کشاورزی و منابع طبیعی دانشگاه اردکان

مهدی تازه |
گروه مدیریت مناطق خشک و بیابانی، دانشکده کشاورزی و منابع طبیعی دانشگاه اردکان

نشانی اینترنتی https://deej.kashanu.ac.ir/article_112658_dfc7cbe41e21979232be8842063fe084.pdf
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