کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1734506 1016158 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improving energy use efficiency of canola production using data envelopment analysis (DEA) approach
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
Improving energy use efficiency of canola production using data envelopment analysis (DEA) approach
چکیده انگلیسی

In this study energy use pattern for canola production in Golestan province of Iran was studied and the degrees of technical and scale efficiency of producers were analyzed using a non-parametric data envelopment analysis technique. The study also helped to identify the wasteful uses of energy by inefficient farmers and to suggest reasonable savings in energy uses from different inputs. Further, the effect of optimization of energy on energy ratio and energy productivity was investigated. Data used in this study were obtained from 130 randomly selected canola farms from Golestan, the most important center of canola production in Iran. The inputs were human labor, diesel, machinery, fertilizers, chemicals, water for irrigation, seeds and electrical energies; while the yield value of canola was considered as output. The results revealed that, the total energy of 17,786 MJ ha−1 was consumed for canola production; about 15% of farmers were found to be technically efficient and the mean efficiency of farmers was found to be 0.74 and 0.88 under constant and variable returns to scale assumptions, respectively. The results also suggested that, on average, a potential 9.5% (1696 MJ ha−1) reduction in total energy input could be achieved provided that all farmers operated efficiently.


► Canola production was dependent mainly on the non-renewable energy resources, which can create serious consequences on human health and ecosystems.
► The study helped to segregate efficient and inefficient farmers and to identify wasteful usage and reasonable savings of energy from different sources.
► A potential 1696 MJ ha−1 reduction in total energy input could be achieved provided that all farmers operated efficiently.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 36, Issue 5, May 2011, Pages 2765–2772
نویسندگان
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