تعیین ارزش اقتصادی آب آبیاری با روش تابع تولید در اراضی شالی‌کاری گروه‌بندی شده با استفاده از روش تحلیل خوشه‌ای در شبکه آبیاری و زهکشی سفیدرود

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، گروه مهندسی آب، دانشکده علوم کشاورزی، دانشگاه گیلان، رشت، ایران

2 دانشیار، گروه مهندسی آب، دانشکده علوم کشاورزی، دانشگاه گیلان، رشت، ایران؛ گروه مهندسی آب و محیط زیست، پژوهشکده حوضه آبی خزر، رشت، ایران

3 استادیار، گروه اقتصاد کشاورزی، دانشکده علوم کشاورزی، دانشگاه گیلان، رشت، ایران

4 استادیار پژوهش، موسسه تحقیقات برنج کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، رشت، ایران

چکیده

در کشور ما تفاوت فاحشی بین میزان عرضه و تقاضای آب در همه بخش‌ها و به‌ویژه در بخش کشاورزی به‌عنوان پرمصرف‌ترین بخش وجود دارد. ارزش‌گذاری اقتصادی به‌عنوان یک راهکار جهت ایجاد تعادل بین عرضه و تقاضا استفاده می‌شود. در این مطالعه، به‌منظور تعیین ارزش اقتصادی آب آبیاری در اراضی شالی‌زاری استان گیلان، ابتدا مزارع بر اساس همگنی به دو گروه تقسیم شدند. سپس با روش تابع تولید و بررسی پنج تابع انعطاف‌پذیر و انعطاف‌ناپذیر، بهترین تابع توسط مقایسات آماری انتخاب و در انتها ارزش اقتصادی هر گروه محاسبه شد. ارزش اقتصادی آب آبیاری در گروه اول با تابع متعالی، 15218 ریال در هر متر مکعب و در گروه دوم با تابع لئونتیف تعمیم‌یافته، 17434 ریال در هر متر مکعب محاسبه شد. اصلاح نظام تعرفه کنونی و کاهش فاصله بین آب­بهای پرداختی برای کاهش تلفات در اراضی شالی‌زاری و افزایش بهره‌وری آب، اقدامی درست است. ایجاد بازارهای محلی آب در تغییر نگرش کشاورزان به آب به‌عنوان یک نهاده عمومی مؤثر است و جنبه خصوصی آن را روشن‌تر می‌سازد.

کلیدواژه‌ها


عنوان مقاله [English]

Determination of irrigation water economic value using production function in paddy fields categorized with cluster analysis method in Sefidroud irrigation and drainage network

نویسندگان [English]

  • Maryam Salar ashayeri 1
  • Mohammadreza Khaledian 2
  • Mohammad Kavousi Kalashomi 3
  • Mojtaba Rezaei 4
1 M. Sc. Student, Dept. of Water Engineering, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran
2 Assoc. Prof., Dept. of Water Engineering, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran; Dept. of Water Engineering and Environmental Sciences, Caspian Sea Basin Research Institute, Rasht, Iran
3 Assist. Prof., Dept of Agricultural Economy, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran
4 Research Assist. Prof., Rice Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Rasht, Iran
چکیده [English]

There is a considerable gap between the amount of water supply and demand in Iran in all sectors, especially in the agricultural sector, as the most commonly water consumer sector. Economic valuation is used as a means for balancing the water supply and demand. In this study, in order to determine the economic value of irrigation water in Guilan province, first farms were divided into two groups based on homogeneity; then, using the production function and the analysis of five flexible and non-flexible functions, the best function was selected by statistical comparisons and finally, the economic value was calculated in each group. The economic value of irrigation water in the first group was calculated with transcendental function being 15218 Rials/m3 and in the second group the generalized Leontief function was calculated to be 17434 Rials/m3. Modifying the present tariff system and reducing the gap between the cost of water and paid water right by the farmers for decreasing water losses in paddy areas and increasing water productivity is an appropriate measure. Establishing local water markets in altering the attitudes of farmers to water is an effective public initiative and brings about the private feature of it.

کلیدواژه‌ها [English]

  • Leontief function
  • Transcendental function
  • Water productivity
  • Water supply and demand
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