بررسی پایداری زیست‌محیطی کشت توتون (Nicotiana tabacum) با رویکرد ردپای اکولوژیکی (موردمطالعه: توتون گرمخانه‌ای و سایه‌خشک در استان گلستان)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکترای توسعه کشاورزی، دانشکده کشاورزی، دانشگاه بوعلی سینا، همدان، ایران

2 گروه ترویج و آموزش کشاورزی، دانشکده کشاورزی، دانشگاه بوعلی سینا، همدان، ایران

3 توسعه کشاورزی، گروه کشاورزی، موسسه پژوهش های برنامه ریزی اقتصاد کشاورزی، تهران ، ایران

چکیده

ردپای اکولوژیک شاخصی معتبر برای ارزیابی وضعیت پایداری تولیدات کشاورزی است. این شاخص امکان محاسبه میزان فشاری که انسان برای تولید محصول به طبیعت اعمال می­کند را فراهم می­سازد. هدف این پژوهش، ارزیابی وضعیت پایداری زیست­محیطی کشت توتون‌های گرمخانه‌ای و سایه‌خشک(Nicotiana tabacum)   با رویکرد ردپای اکولوژیکی است. این پژوهش کاربردی به شیوه پیمایشی در سال زراعی 97-1396 انجام گرفت. داده­ها با استفاده از پرسشنامه و مصاحبه حضوری انجام شد و نمونه آماری بر اساس فرمول کوکران 100 نفر برای ارقام گرمخانه­ای و 60 نفر برای ارقام سایه‌خشک برآورد گردید. برای ارزیابی پایداری از شاخص ردپای اکولوژیک استفاده شد. نتایج نشان دادند، وضعیت پایداری کشت بر اساس ردپای اکولوژیکی (مستقیم و غیرمستقیم) در توتون سایه‌خشک 05/4 و توتون گرمخانه‌ای 67/3 معادل هکتار جهانی می‌باشد. بنابراین، تولید توتون سایه‌خشک نسبت به توتون گرمخانه‌ای در وضعیت ناپایدارتری قرار دارد. آلایندگی ناشی از مصرف الکتریسیته برای کشت توتون سایه‌خشک با 19/38 درصد و برای کشت توتون گرمخانه‌ای با 80/38 درصد بیشترین تأثیر در شاخص ردپای اکولوژیک داشته است.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Study of Environmental Sustainability of Tobacco (Nicotiana tabacum) Cultivation with Ecological Footprint Approach (Case Study: Flue–Cured Tobacco and Air–Cured in Golestan Province)

نویسندگان [English]

  • abdolhalim kor 1
  • karim naderi mahdei 2
  • Karwan Shanazi 1
  • Seyed Mohammad Jafar Esfahani 3
1 Ph. D. Student of Agricultural Development, Faculty of Agricultural, Bu- Ali Sina University, Hamedan, Iran
2 Department of Agricultural Extension and Education, Faculty of Agricultural, Bu- Ali Sina University, Hamedan, Iran
3 Department of Agriculture, Payame Noor University(PNU),
چکیده [English]

Introduction
Today, agricultural systems are considered as the center and main axis of all activities related to the development of sustainable agriculture in Iran. Obviously, the more efforts to expand the sustainability of the exploitation systems of the regions, the better the situation will be in terms of reducing energy loss, production costs, increasing performance and conserving resources, and preventing waste. From an ecological point of view, the per capita consumption of energy and materials used in agriculture has increased faster than population growth, so that the continuation of this process endangers the health, sustainability and well-being of society and causes the destruction of ecological resources. For this reason, any exploitation of nature should be done after evaluating the resources and within the capabilities and capacities of the environment. Recognizing the problems and bottlenecks of the specialized tobacco (Nicotiana tabacum) cultivation system in Golestan province as well as formulating appropriate solutions to solve the environmental problems of tobacco cultivation is of great importance in the sustainable development of this product. Ecological footprint is a valid indicator for assessing the sustainability of agricultural products. This index makes it possible to calculate the amount of pressure that humans exert on environment to produce crops. Therefore, the purpose of this study is to study the environmental impacts of tobacco cultivation due to the importance of environment and sustainable agricultural.
Materials and Methods
In this study, the environmental sustainability of two types of greenhouse tobacco (Virginia) and dry shade (Barley) was evaluated. The statistical population of this research is tobacco growers, Flue-Cured tobacco and Air-Cured tobacco in Golestan province. The statistical sample size was estimated to be about 160 people using Cochran's formula. The data collection tool was a questionnaire that was randomly distributed and completed among 100 Flue-Cured tobacco farmers and 60 Air-Cured tobacco farmers in 2019. To assess the environmental effects, the ecological footprint index was used. For this purpose, the ecological footprint was calculated based on the type of field operations in two parts: direct and indirect footprint.
Results and Discussion
The results of the study indicated that the total energy consumption for the production of Air-Cured tobacco was 97327 MJ/ha. Electricity with 44.72% had the largest share in energy consumption followed by nitrogen with 16.69% and diesel with 16.61%. The total energy consumed to produce one hectare of Flue-Cured tobacco was 73,184 MJ, electricity has largest share followed by diesel. Indirect ecological footprints were calculated for, Flue-Cured tobacco and Air-Cured tobacco 1.16 and 1.54 gha, respectively. In Air-Cured tobacco Electricity with 38.19% nitrogen fertilizer with 18.67% and diesel with 18.58% have the greatest impact on ecological footprint.  The results show the total ecological footprint (direct and indirect) Air-Cured tobacco (4.05) and Flue-Cured tobacco (3.67) equivalent to the global hectare (gha). The results of ecological footprint studies in both types of tobacco indicate that the highest environmental impact resulting from crop production is related to electricity input. In the Flue-Cured production process, the electricity consumption is related to the water pump (electric wells) and the greenhouse (fan for ventilation), but in the Air-Cured tobacco, it is only related to the water pump consumption.
Conclusion
Sustainability indicators are a tool that can be used to raise the awareness of tobacco growers about the environmental effects of their actions. According to the results of this study, the use of electricity, water, fertilizer and diesel inputs has the greatest impact on ecological instability, so proper management of the use of these inputs is a necessity, such as the use of appropriate technologies, fertilizer use according to plant needs. Reducing the intensity of tillage by using appropriate machinery and paying attention to climatic conditions as well as increasing the awareness of tobacco growers with the help of educational-promotional activities can be effective in reducing the consumption of inputs and optimal use.

کلیدواژه‌ها [English]

  • Environmental Impacts
  • Tobacco
  • Ecological Capacity
  • Sustainable Agriculture
  • Energy Evaluation
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