Impacts of Iranian Agricultural Water Resources Conservation Policies (Case of Baft County in Dashtab Plain)
محورهای موضوعی : Environmental policy and managementشجاع موسی پور 1 , محمود هاشمی تبار 2 , مهدی صفدری 3
1 - دانشجوی دکتری ، گروه اقتصاد کشاورزی ، دانشکده اقتصاد و مدیریت ، دانشگاه سیستان و بلوچستان، زاهدان، ایران
2 - استادیار، گروه اقتصاد کشاورزی، دانشکده اقتصاد و مدیریت، دانشگاه سیستان و بلوچستان، زاهدان، ایران
3 - دانشیار، گروه اقتصاد کشاورزی، دانشکده اقتصاد و مدیریت، دانشگاه سیستان و بلوچستان، زاهدان، ایران
کلید واژه: Water resources, water subsidy reduction, Dashtab Plain, positive mathematical programming (PMP),
چکیده مقاله :
Water scarcity has made water management one of the top priorities in the world because of climate change and population growth on the one hand and increasing demand for food on the other. The present study aimed to simulate the effects of conservation policies on water resources in the Dashtab plain, Iran, using the positive mathematical programming (PMP) method. Data were collected by a questionnaire for which 136 questionnaires were filled by randomly sampled experts of Agricultural Jihad Organization. The results showed that out of the three policies adopted in this study including limiting irrigation inputs, reducing irrigation input subsidies, and reducing crop prices, reducing subsidies on irrigation inputs were the best policy to protect irrigation resources and farmers' incomes.
کمبود آب به دلیل تغییرات آب و هوایی و رشد جمعیت از یک سو و افزایش تقاضا برای غذا از طرف دیگر مدیریت آب را به عنوان یکی از اولویتهای مهم در جهان قرار داده است. بنابراین، در این مطالعه با استفاده از روش برنامهریزی ریاضی مثبت (PMP)، تأثیر سیاستهای حفاظتی بر منابع آب دشت، دشتاب شبیهسازی شده است. دادههای این پژوهش با نمونهگیری تصادفی از طریق تکمیل 136 پرسشنامه و توسط کارشناسان سازمان جهاد کشاورزی جمعآوری شده است. نتایج نشان داد که از سه سیاست اتخاذ شده در این پژوهش یعنی محدودیت منابع آب آبیاری، کاهش یارانه آب آبیاری و کاهش قیمت محصولات، بهترین سیاست برای محافظت از منابع آبیاری و درآمد کشاورزان،کاهش یارانه نهاده آب آبیاری میباشد.
Aidam, P.W. (2015). The effect of water-pricing policy on the demand for water resources by farmers in Ghana. Agricultural Water Management, 158, 10-16.
Azuara, J.M., Harou,J.J., & Howitt,R.E.( 2009). Estimating economic value of agricultural water under changing conditions and the effects of spatial aggregation. Science of the Total Environment, 408(23), 1-10.
Bakhshi, A., Daneshvar Kakhaki, M., & Moghadasi, R. (2011). Application of positive mathematical planning model to analyze the impact of alternative water pricing policies in Mashhad plain. Journal of Agricultural Economics and Development 25(3), 284-294.
Briscoe, J., (1996) Water as an economic good: The idea and what it means in practice. In: Proceedings of the World Congress of the International Commission on Irrigation and Drainage. Cairo, Egypt, September 1996.
Cortignani, R., & Severini, S. (2009). Modeling farm-level adoption of deficit irrigation using Positive Mathematical Programming. Agricultural Water Management, 96, 1785–1791.
Gallego-Ayala, J. (2012). Selecting irrigation water pricing alternatives using a multi-methodological approach. Mathematical and Computer Modelling, article in press.
Gomez- Limon, J.A., & Riesgo, L. (2004). Irrigation water pricing: Differential effects on irrigated farms. Agricultural Economics, 31(1), 47–66.
Hellegers, P., & Davidson, B. (2010). Determining the disaggregated economic value of irrigation water in the Musi sub-basin in India. Agricultural Water Management, 97, 933-938.
Hellegers, p. (2002). Treating water in irrigated agriculture as an economic good, economics of water and agriculture workshop. Rehovot, Israel.
He, L., Tyner, W.E., Doukkali, R., & Siam, G. (2006). Policy options to improve water allocation efficiency: analysis on Egypt and Morocco. Water International, 31(2), 320–337.
Howitt, R., Medellin-Azuara, J., MacEwan, D., & Lund, R. (2012). Calibrating disaggregate economic models of agricultural production and water management. Science of the Environmental Modelling and Software, 38, 244-258.
Howitt, R. (2005). Agricultural and environmental policy models: Calibration, Estimation, and optimization. Dept. Of Agricultural and Resource Economics, University of California, Davis, Edward Elgar Publishing Company, USA.
Heckelei, T. (2002). Calibration and estimation of programming models for agricultural supply analysis. Faculty of Agriculture Rheinische Friedrich Wilhelms University Bonn, Germany.
Howitt, R.E. (1995). Positive mathematical programming. American Journal of Agricultural Economics, 77, 329-342.
Rahnama, A., Kohansal, M.R., & Durandish, A. (2012). Estimating the economic value of water using positive mathematical planning approach in Quchan City. Journal of Agricultural Economics, 6 (4), 150-133.
Shirzadi, S., Sabouhi, M., Davari, K., & Keikha, A.A. (2018). The effect of irrigation water pricing policy on the level of groundwater level in Neyshabur catchment. Agricultural Economics Research, 10 (3), 220-187.
Sabouhi, m., & Azadegan, a. (2014). estimation of dynamic supply functions of major crops and analysis of impacts of irrigation water pricing policy: A Case Study of Mashhad-Chenaran Plain. Journal Economics and Agricultural Development, 28 (2), 196-185.
Shahroudi, A., & Chizari, M. (2009). Analysis of behavioral domains of agriculture in Khorasan Razavi province optimum contribution in the field of agricultural water: Comparison of participants and non-participants in cooperative water use. Iranian Agricultural Extension and Education Sciences, 2, 81-98.
Sabouhi, M., Soltani, G., & Zibaie, M. (2007). Investigation of the impact of irrigation water price changes on private and social benefits using positive mathematical planning model. Journal of Agricultural Science and Technology, 1, 71-53.
Perry, C.J. (2001). Charging for irrigation water: The issues and options, with a case study from Iran, International Water Management Institute, Research Report No. 52.
Paris, Q., & Howitt R.E. (1998). An analysis of ill-posed production problems using Maximum Entropy. American Journal of Agricultural Economics, 80(1), 124-138.
Yousefi, A., & Khalilian, S., & Balali, H. (2012). Investigation importance strategic of water resource in Iran economic using of general balance model. Journal of Agricultural Economics and Development, 1, 109-120.
Zhou, Q., Wu, F., & Zhang, Q. (2015). Is irrigation water price an effective leverage for water management? An empirical study in the middle reaches of the Heihe River Basin. Physics and Chemistery of the Earth, Parts A/B/C. 89-90: 25-32.