پديد آورندگان :
نوروززاده، محسن دانشگاه اردكان - دانشكده كشاورزي و منابع طبيعي , قانعي بافقي ، محمدجواد دانشگاه اردكان - دانشكده كشاورزي و منابع طبيعي , تازه، مهدي دانشگاه اردكان - دانشكده كشاورزي و منابع طبيعي
كليدواژه :
مكانيابي , جمعآوري آب , تصميمگيري چندمعياره , استحصال آب
چكيده فارسي :
كمبود آب در كشور ايران، بهخصوص در مناطق خشك و نيمهخشك، همواره مشكلساز بوده است. در اين تحقيق، بهمنظور مكانيابي سازههاي استحصال آب در شهرستان راور، از تركيب روشهاي تصميمگيري چندمعياره و سيستم اطلاعات جغرافيايي استفاده شد. نتايج اين تحقيق نشان داد كه از معيارهاي مورد استفاده در اين تحقيق، بهترتيب بر اساس وزن بهدستآمده از پرسشنامههاي تكميلشده توسط خبرگان، شامل معيارهاي بارندگي، شيب، شوري، پوشش گياهي، بافت، ژئومورفولوژي با وزنهاي 362/0، 298/0، 151/0، 82/0، 53/0، 51/0 است. پس از تلفيق لايههاي اطلاعاتي مربوط به هر معيار، نقشههاي نرمالشده، در وزن هر لايه ضرب و نقشۀ تجميعشده، طبقهبندي شد. بر اين اساس، منطقۀ مطالعاتي به چهار دستۀ كاملاً مناسب، مناسب، تناسب كم و بسيار نامناسب تقسيمبندي شد. مناطقي كه بر اساس هريك از معيارها امكان اجراي پروژۀ مذكور را نداشتند، با استفاده از روش بولين به دو كلاس صفر و يك طبقهبندي و مناطق نامربوط از نقشۀ تناسب حذف شد. نتايج بهدستآمده با واقعيت زميني كه همان پروژههاي اجراشده در منطقه است، مقايسه و صحت كار ارزيابي شد. نتايج نشان داد كه نقشههاي بهدستآمده با ميزان صحت 8/65درصد با واقعيت زميني مطابقت دارد.
چكيده لاتين :
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.