ارزش گذاری آب های زیرزمینی ارزش گذاری آب های زیرزمینی در بهره برداری های کشاورزی (مطالعه موردی برنجکاران شهرستان رامهرمز)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشیار ترویج و آموزش کشاورزی، گروه مدیریت کشاورزی، دانشگاه آزاد اسلامی واحد گچساران، ایران

2 2. دانش آموخته کارشناسی ارشد دانشگاه آزاد اسلامی واحد شوشتر، شوشتر، ایران

3 استادیار اقتصاد کشاورزی، گروه اقتصاد کشاورزی دانشگاه آزاد اسلامی واحد یاسوج، ایران

چکیده

بخش کشاورزی عمده ترین مصرف کننده آب زیرزمینی در بین بخش های مختلف اقتصادی محسوب می گردد. بهره برداری زیاد از آب های زیرزمینی میزان افت سالانه سطح این آب ها قابل توجه است. بنابراین، محاسبه ارزش اقتصادی هر واحد آب و محاسبه اثر های جانبی برداشت بیش از حد از منابع آب اهمیت بالایی دارد. این مطالعه، به تعیین ارزش اقتصادی آب، حد بهینه استفاده از نهاده آب و اثر تغییر سطح آب های زیرزمینی بر رفاه اجتماعی تولیدکنندگان برنج شهرستان رامهرمز پرداخته شد. به این منظور ابتدا تابع تولید مناسب تخمین زده شد و با استفاده از آن ارزش اقتصادی آب و حد بهینه استفاده از نهاده آب تعیین گردید. آنگاه با تشکیل تابع سود یا رفاه اجتماعی، اثر تغییر در سطح آب های زیرزمینی بر مقدار رفاه اجتماعی تولیدکنندگان تعیین شد. نتایج نشان داد که ارزش اقتصادی آب در منطقه مورد مطالعه به ازای هر مترمکعب 54/649 ریال است. به طوری که ارزش اقتصادی هر واحد آب بیش از هزینه استخراج هر واحد آن است .این اختلاف منجر به برداشت بی رویه از آب های زیرزمینی و کاهش سطح آب های زیرزمینی و در نهایت کاهش رفاه تولیدکنندگان برنج می گردد. به طوری که اگر سطح آب های زیرزمینی 81/0 متر کاهش یابد، از سود اجتماعی بهره برداران 61/1110257 ریال کاسته می شود. این مطالعه پیشنهاد می کند که علاوه بر سیاست های قیمتی، از راه حل های غیر قیمتی مانند اعمال محدودیت هایی بر میزان استخراج آب، در جهت حفظ سفره های آب زیرزمینی استفاده گردد.

کلیدواژه‌ها

عنوان مقاله [English]

Valuation of Underground Waters in Agricultural Stakeholders The study of rice farmers of Ramhormoz city, Khuzestan province

نویسندگان [English]

  • Mohsen Moosaei 1
  • Mehsa Hosseinzadeh 2
  • Mehrdad Moradi 3
1 Associate Professor of Agricultural Extension and Education, Department of Agricultural Management, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran
2 Master's degree student of Shushtar branch, Islamic Azad University, Shushtar, Iran
3 Assistant Professor of Agricultural Economics, Department of Agricultural Economics, yasuj branch, Islamic Azad University, Yasuj, Iran
چکیده [English]

Abstract
Introduction: Currently, the agricultural sector is considered to be the major consumer of underground water in this region, among different economic sectors, and due to excessive exploitation of underground water, the annual drop in the level of these waters is significant. Therefore, calculating the economic value of each unit of water and calculating the side effects of over-harvesting water resources is very important. In this study, the determination of the economic value of water, the optimal level of water input use and the effect of changing the groundwater level on the level of social well-being of rice producers in Ramhormoz city are discussed.
Method: For this purpose, the appropriate production function was first estimated, and using it, the economic value of water and the optimal limit of water input use were determined. Then, by forming the function of profit or social welfare, the effect of change in the level of underground water on the amount of social welfare of the producers was determined.
 Findings: The results of this research show that the economic value of water in the study area is 649.54 rials per cubic meter. So that the economic value of each unit of water is more than the cost of extracting each unit, and this difference leads to excessive extraction of underground water and the reduction of the level of underground water, and finally the welfare of rice producers. So that if the underground water level decreases by 0.81 meters, the social benefit of the beneficiaries will decrease by 1110257.61 riyals.
Conclusion: This study suggests that in addition to price policies, non-price solutions such as applying restrictions on the amount of water extraction should be used in order to preserve underground water tables

کلیدواژه‌ها [English]

  • Valuation
  • underground water
  • rice
  • Ramhormoz city

مراجع

  1. Kopai M. The importance and position of underground water in the hydrological cycle. In: Proceedings of the Second National Student Conference on Water and Soil Resources. Shiraz; 2004. https://civilica. Com /doc /9907
  2. Abrishamchi A, Tajrishi M. Management of the country’s water resources demand. In: Proceedings of the first conference on methods of preventing the loss of national resources. Tehran; 2004. https://civilica .com /doc/26600
  3. Hosseinzad H. Determining the approprgrgiate method of water pricing in the agricultural sector, case study: Alavian dam and network. University of Tehran; 2004.
  4. Chizari A, Mirzaei A, Karamatzadeh A. Determining the economic value of agricultural water using the model of the optimal cultivation pattern combining agriculture and horticulture: a case study of Barzo Shirvan Dam. Agricultural Economics and Development. 2006;14(2):35–60. 10.30 490/aead.2006.58914
  5. Chitsazan M, Mousavi S, Mirzaei Y. Studying the effects of drought on Ramhormoz plain aquifer. In: Proceedings of the second national conference on the effects of drought and its management solutions. Isfahan; 2009. https:// civilica.com/doc/67370
  6. Soltani G, Zibai M. Pricing of agricultural water. Water and Development, Water Affairs Quarterly of the Ministry of Energy. 1996;1(14):12–21. https://sid.ir/paper/438417/fa
  7. Zare Mehrjardi M, Rezaei. A, Ziyaabadi. M. Evaluation of underground water with quality approach; A case study of pomegranate growers in the city of Bod. Irrigation and water engineering scientific research quarterly. 2012;3(10):11–18.
  8. https://www.waterjournal.ir/article_70600_9d1473b54fbecc58b5e5e9b19f0a760
  9. Agudelo, J.I. The Economic Valuation of Water: principles and Methods. 2001. https://www.researchgate.net/publication/228471046_
  10. Ahmadian M, Inteziri A. Valuation of underground water in the agricultural exploitation of wheat farmers in Khatam city in Yazd province (Herat district). Journal of sustainability, development and environment. 2014;1(3):27–39. https://www.magiran.com/p1691146
  11. Birol K, Koundouri P. Using economic valuation techniques to inform water resources management: A survey and critical appraisal of available. techniques and an application. Science of the Total Environment. 2006;365:105–22. 1016/j.scitotenv.2006.02.032
  12. Joanpoor P, Keri L. Exploring the hedonic value of ambient water quality: A local watershed-based study. Ecological Economics. 2007;60:797–806.10.1016/j.ecolecon.2006.02.013
  13. Moran D, Dann S. The economic value of water use: Implications for implementing the water framework directive in Scotland. J Environ Manage. 2008;87:484–96. 1016/j.jenvman.2007.01.043
  14. Fontes P, Carneiro A. Land suitability, water balance and agricultural technology as a geographic-technological index to support regional planning and economic studies. Land using Policy. 2009;26:589–98. 10.1016 /j.landusepol.2008.08.010
  15. Khalilian p, Zare Mehrjardi M. Valuation of underground water in agricultural operations: a case study of wheat farmers in Kerman city. Agricultural Economics and Development. 2005. 13) 2(:1–14. 30490 /aead.2005.128570
  16. Panahi A, Mohammadi H. Economic analysis of production and management of water demand in rice farmers of Fars province. 2007.
  17. Tahamipour M, Mehrabi H, Karbasi A. The effect of reducing the level of underground water on the social welfare of producers: a case study of pistachio farmers in Zarand city. Agricultural Economics and Development. 2005;13(49) :97–116. https: // sid.ir /paper/24400/fa
  18. Huang Q, Rozelle S, Howitt R. Irrigation water pricing policy in China. In: Selected paper prepared for presentation at the American Agricultural Economics Association Annual Meeting. Long beach, California; 2006. https://www.researchgate.net/publication/23506523
  19. Huang Q, Rozelle S., Howitt R. The efficient use of data in estimating production technology: Trading off precision and heterogeneity. 2008. https: //www.researchgate.net/publication/228602357
  20. Blingnut J, Van Eyden R, Moolman C. Modelling the marginal revenue of water in selected agricultural commodities: A panel data approach. Agrekon. 2006;45(1):78–91. 1080 /03031853.2006.9523735
  21. Gayatri A, Barbier E. Valuing groundwater recharge through agricultural production in hadejia. Agricultural Economical. 2000;22:247–59. 10.1111/j.1574-0862.2000.tb00073.x
  22. Brimnejad V. Extraction of water demand function from polynomial production function in agriculture sector. Scientific Journal of Agriculture.30(2):107-116 2007. https://sid.ir/ paper /44 7375/fa

فایل ها

سابقه مقاله

  • تاریخ دریافت: 23 اسفند 1395
  • تاریخ بازنگری: 15 اردیبهشت 1400
  • تاریخ پذیرش: 25 بهمن 1402

هم رسانی

ارجاع به این مقاله

آمار