ارزیابی اثر توسعه سیستم‌های آبیاری، سناریوهای الگوی کشت و کم‌آبیاری بر بهره‌وری آب در شبکه آبیاری قزوین به روش پویایی سیستم‌ها

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار گروه علوم و مهندسی آب، دانشگاه بین المللی امام خمینی (ره)

2 استاد گروه مهندسی آبیاری و آبادانی، دانشگاه تهران.

3 دانشیار گروه مهندسی آبیاری و آبادانی، دانشگاه تهران.

چکیده

یکی از بحرانی‌ترین چالش‌های حال حاضر بشر، رفع بحران آب است. در این پژوهش با استفاده از روش پویایی سیستم‌ها و نرم افزار Vensim به مطالعه و ارزیابی­ سناریوهای مختلفی که بر بهره­وری آب اثر خواهد گذاشت، از جمله اثر توسعه سامانه­های آبیاری تحت فشار، الگوی کشت و کم آبیاری پرداخته شد. نتایج نشان داد توسعه آبیاری تحت فشار در سطح شبکه قزوین، موجب افزایش بهره‌وری فیزیکی آب می‌شود و بسته به نوع الگوی کشت و سطح کم‌آبیاری می‌تواند موجب افزایش و یا کاهش بهره‌وری اقتصادی شود. بیشترین و کمترین حجم آب مورد نیاز سالانه شبکه آبیاری در سناریوهای ترکیبی به­ترتیب مربوط به تیمارهای “CPS 3 FI MIDS 15%” و “CPS 8 DI 60% MIDS 45%” به مقدار 11738 و 2761 مترمکعب در هکتار بود. بهره‌وری آب اقتصادی در سطح شبکه در سناریوهای الگوی کشت CPS 8 و CPS 4 در مقایسه با بهره‌وری آب اقتصادی الگوی کشت موجود CPS 1 به­ترتیب 51 و 2/25 درصد افزایش داشته است و بهره‌وری آب فیزیکی در سطح شبکه در سناریوهای الگوی کشت CPS 4، CPS 7 و CPS 8 در مقایسه با بهره‌وری آب فیزیکی الگوی کشت موجود به­ترتیب 4/35، 1/35 و 3/27 درصد افزایش داشته است. از آن­جای­که الگوی کشت بر بهره‌وری اقتصادی و فیزیکی آب در سطح شبکه اثر قابل ملاحظه‌ای دارد، لذا بایستی تمهیداتی بر کنترل الگوی کشت انجام شود. این تمهیدات می‌تواند ترکیبی از رویکردهای آموزشی، ترویجی و یا تنظیم­گری باشد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Investigation of Irrigation Systems Development, Cropping Pattern Scenarios, and Deficit Irrigation on Water Productivity in Qazvin Irrigation Network by Systems Dynamics

نویسندگان [English]

  • Bijan Nazari 1
  • Abdolmajid Liaghat 2
  • Masoud Parsinejad 3
1 Associate Professor of Water Sciences and Engineering Department, Imam Khomeini International University, Qazvin, Iran
2 Professor of Irrigation and Reclamation Engineering Department, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.
3 Associate Professor of Irrigation and Reclamation Engineering Department, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.
چکیده [English]

One of the most critical challenges of the twenty-first century is to resolve water crisis. This crisis is characterized by scarcity of water, the destruction of natural ecosystems, and food shortages. In spite of extensive efforts made to ensure food security, human societies still have trouble feeding their populace. This problem is most likely due to their inability to access healthy and safe water resources (Kijne, 2003). The solution to the water crisis can be expressed as better development and proper management of water resources systems. Various technical and managerial solutions should be taken such as upgrading and improving irrigation systems, introducing new irrigation methods, deficit irrigation, optimizing the cropping pattern, improving the efficiency of irrigation networks, etc. to improve water productivity in agriculture. The system dynamics methodology is a modeling and simulation technique and is specially designed for long-term, chronic, and dynamic management issues (Vlachos et al., 2007). Crop pattern scenarios, crop production, and agricultural pollution in a region in southern Turkey have been studied by Saysel et al. (2002) with a system dynamics approach. Also, the system dynamics approach was applied in the study of integrated water management at the catchment scale by Soltani and Alizadeh (2017). In this study, the systems dynamics approach, which is a suitable method for studying complex water systems, was applied in water productivity investigation in the Qazvin irrigation network.

کلیدواژه‌ها [English]

  • Water Consumption
  • Modeling
  • Stoke and Flow Diagram
  • Vensim
  • Alizadeh, H.A., Liaghat, A.M. and Sohrabi, T., (2014). Assessing pressurized irrigation systems development scenarios on groundwater resources using system dynamics modeling. Journal of water and soil resources conservation, 3(4), pp. 1-15. (In Persian).

 

  • , 2010. The United Nations World Water Development, Report 3.Water in A Changing World. Report.

 

  • Arshadi, M. and Bagheri, A., 2014. A system dynamic approach to sustainability analysis in Karun river basin. Iran-Water Resources Research, 9(3), pp. 1-13. (In Persian).

 

  • Chitsaz, M., 2006. Water and International Security. Sustainable Development Studies Research. The first number, Tehran. (In Persian).

 

  • Fletcher, E.J., 1998. The use of system dynamics as a decision support tool for the management of surface water resources. In First International Conference on New Information Technologies for Decision Making in Civil Engineering Montreal, CER, Canada.

 

  • Hosseini, S.A. and Bagheri, A., 2013. System dynamics modeling of the water resources system in Mashhad plain to analyze strategies for sustainable development. Journal of Water and Wastewater. 24 (4). pp. 28-39 (In Persian).

 

  • Kadkhodahosseini, M., Shamohammdi, SH., Nozari, H. and Mirabbasi Najafabadi, R., 2019. Inveestigating the impacets of water transfer to Choghakhor dam on resource allocation using system dynamics approach. Journal of Irrigation and Water Engineering, 9(2), pp. 65-79. (In Persian).

 

  • Kijne, J.W., Barker, R and Molden, D., 2003. Improving Water Productivity in Agriculture. In Water Productivity in Agriculture: Limits and Opportunities for Improvement. CAB.

 

  • Mehrazar, A., Masahbovani, A.R., Mashal, M. and Rahimi khob, H., 2016. Integrated modeling of water, agriculture, and economic-social water resources systems of Hashtgerd plain with dynamic system approach. Journal of Water and Irrigation Management, 6(2), pp. 263-279. (In Persian).

 

 

  • Misaghi, A., Ansari, H. and khashei Siuki, A., 2016. The effect of the development of new irrigation systems to watertable changes using system dynamics (Case study: Neyshabour basin), Iranian Journal of Irrigation and Drainage, 11(2), pp. 141-150. (In Persian).

 

  • Molavi, H. Liaghat, A.M. and Nazari, B., 2017. Assessment of development and improvement policies of pressurized and surface irrigation systems using system dynamics: Case study Aras Basin. Journal of irrigation and water engineering, 7(3), pp. 75-92. (In Persian).

 

  • Molavi, H., Liaghat, A.L. and Nazari, B., 2016 Assessment of policies of changes in cropping pattern and deficit irrigation management using system dynamics modeling (Case study: Aras basin). Journal of Water and Irrigation Management. 6(2), pp. 217-236. (In Persian).

 

  • Nazari, B., Fazeli Sangani, M. and Jenab, M., 2019. Analysis of gross value of irrigated agricultural products in Qazvin province based on GVIAP index. Journal of Water and Soil Resources Conservation. 8(3), pp. 11-25. (In Persian).

 

  • Nozari, H., Azadi, S. and Rezaverdinejad, V., 2019. Simulation of the effect of salinity and water stress on sugar beet using the system dynamics approach. Journal of Hydrology and Soil Science, 23(1), pp 337-350. (In Persian).

 

  • Orojloo, M., Hashemy Shahdany, S.M. and Roozbahani, A., 2018. Developing an integrated risk management framework for agricultural water conveyance and distribution systems within fuzzy decision making approaches, Science of The Total Environment, 627, pp. 1363-1376.

 

  • Pishbahar, A. and Rahimi, j., 2016. The impact of climate and management scenarios on agriculture and water discharge in Iran: Application of system dynamics model. Journal of Agricultural Economics and Development, 31(1), pp. 94-73. (In Persian).

 

  • Rahimi khob, H., Sotoudehnia, A., Masahbovani, A.R. and Gohari, A.R., 2015. Evaluation of a series of effects of climate change on Hashtgerd plain water resources and agriculture systems using the dynamics of systems approach. Iranian Journal of Soil and Water Research. 46(2). pp. 183-193. (In Persian).

 

  • Sadeghi, Sh., 2006. Hydraulic and water crisis. Political and Economic Ettela'at., 45, pp. 115-116. (In Persian).

 

  • Salvitabar, A., Zarghami, M. and Abrishamchi, A., 2006. System dynamic model in Tehran urban water management. Journal of Water and Sewage, 59, pp. 12-28. (In Persian).

 

  • Saysel, AK., Barlas, Y. and Yenigün O., 2002. Environmental sustainability in an agricultural development project: a system dynamics approach. Journal of Environmental Management, 64: 247–260.

 

  • Shangguan, Z., Shao, M., Horton, R., Lei, T., Qin, L. and Ma, J., 2002. A model for regional optimal allocation of irrigation water resources under deficit irrigation and its applications. Agricultural Water Management, 52, pp. 139–154.

 

  • Soltani, and Alizadeh, H.A., 2017. Integrated water resources management at basin scale (IWMsim) using a system dynamics approach. Journal of Water and Soil Resources Conservation. 2, pp. 69-90. (In Persian).

 

  • Sterman, J.D., 2000. Business dynamics: systems thinking and modelling for a complex world. McGraw-Hill, Boston,

 

  • Sterman, J.D., 1994 .Learning in and about complex systems. System Dynamics Review, 10(2-3), pp. 291–330.
  • Turner, B.L., Tidwell, V., Fernald, A., Rivera, J.A., Rodriguez, S., Guldan, S., Ochoa, C., Hurd, B., Boykin, K. and Cibils, A., 2016. Modeling acequia irrigation systems using system dynamics: model development, evaluation, and sensitivity analyses to investigate effects of socio-economic and biophysical feedbacks. Sustainability Journal. 8(10), pp. 10-19.

 

  • Vlachos, D., Georgiadis, P. and E., 2007. A system dynamics model for dynamic capacity planning of remanufacturing in closed-loop supply chains. International Journal of Computers and Operations Research, 34, pp.367-394.

 

  • Yousefi, P., 2015. Water crisis. In The 2nd National Conference on Water Crisis Leadership in Iran and the Middle East. Scientific Conference Center , Shiraz. (In Persian).