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بهینهسازی انرژی مصرفی و کاهش انتشار گازهای گلخانهای در تولید عدس آبی با استفاده از روش تحلیل پوششی دادهها | ||
| مهندسی بیوسیستم ایران | ||
| مقاله 12، دوره 47، شماره 4، بهمن 1395، صفحه 710-701 اصل مقاله (978.24 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijbse.2017.60264 | ||
| نویسندگان | ||
| بهزاد الهامی1؛ اسداله اکرم2؛ مجید خانعلی* 3 | ||
| 1دانشجوی کارشناسی ارشد دانشگاه تهران- پردیس کشاورزی و منابع طبیعی- دانشکده مهندسی فناوری | ||
| 2دانشیار گروه مهندسی و فناوری کشاورزی- پردیس کشاورزی و منابع طبیعی دانشگاه تهران | ||
| 3پردیس کشاورزی و منابع طبیعی دانشگاه تهران | ||
| چکیده | ||
| ه در سالهای اخیر افزایش مصرف نهادههای کشاورزی منجر به افزایش انرژی مصرفی و انتشار گازهای گلخانهای شده است. از این رو، بهینهسازی انرژی مصرفی و در نتیجه کاهش آلایندههای زیستمحیطی از اهمیت ویژهای برخوردارند. بدینمنظور، در این تحقیق، بهینهسازی انرژی مصرفی و کاهش انتشار گازهای گلخانهای در تولید عدس آبی استان اصفهان با استفاده از روش تحلیل پوششی دادهها مورد مطالعه قرار گرفت. دادههای تحقیق به شکل تصادفی و از طریق مصاحبه حضوری پرسش‌نامه‌ای با 140 تولیدکننده عدس آبی در سال زراعی 94-1393 جمع‌آوری شدند. بر اساس دو مدل "بازگشت به مقیاس ثابت" و "بازگشت به مقیاس متغیر"، مقادیر متوسط کارایی فنی، کارایی فنی خالص و کارایی مقیاس به ترتیب برابر با 960/0، 998/0 و 961/0 محاسبه شدند. در حالت مصرف بهینه نهادهها، صرفهجویی در کل انرژی 1031 مگاژول بر هکتار (معادل 12/3% کل انرژی مصرفی)، برآورد گردید. در این میان، آب آبیاری و کود نیتروژن به ترتیب با 28% و 20% دارای بیشترین سهم از کل انرژی ذخیره شده، بودند. مقادیر کل انتشار گازهای گلخانهای در شرایط واقعی و بهینه در یک هکتار زمین زراعی، به ترتیب 45/930 و 17/882 کیلوگرم معادل دی اکسید کربن (18/5% کاهش در انتشار گازهای گلخانهای) محاسبه شدند. نهادههای الکتریسیته و سوخت دیزل به ترتیب 37% و 32% از کل کاهش انتشار گازهای گلخانهای را به خود اختصاص دادند. | ||
| کلیدواژه‌ها | ||
| انتشار گازهای گلخانهای؛ انرژی؛ بهینهسازی؛ تحلیل پوششی دادهها؛ عدس | ||
| عنوان مقاله [English] | ||
| Optimization of energy consumption and mitigation of greenhouses gas emissions of irrigated lentil production using data envelopment analysis | ||
| نویسندگان [English] | ||
| Majid Khanali3؛ | ||
| 3University College of Agriculture and Natural Resources | ||
| چکیده [English] | ||
| In this study, the optimization of energy consumption and reduction of greenhouse gas emissions of irrigated lentil production in Esfahan province were conducted using data envelopment analysis (DEA) method. The used data were collected randomly from 140 lentil producers using a face to face questionnaire method in the cropping season of 2014-2015. Based on two DEA models of constant returns to scale (CRS) and variable returns to scale (VRS), the average values of technical efficiency, pure technical efficiency and scale efficiency were calculated as 0.960, 0.991 and 0.961, respectively. By consumption of optimum values of inputs, the total energy saving was estimated 1031 MJ/ha, i.e., 3.12% the total energy consumption, in which, irrigation water and nitrogen fertilizers with the shares of 35% and 15%, respectively, had the most contribution on the total energy saving. Total GHG emission at actual and optimum conditions were calculated as 930.45 and 882.17 kgCO2eq. per ha, respectively (5.18% reduction in total GHG emission).. | ||
| کلیدواژه‌ها [English] | ||
| Greenhouses gas emission, Energy, Optimization, Data Envelopment Analysis, Lentil | ||
| مراجع | ||
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