مدیریت پایدار آبیاری با استفاده از رویکرد تصمیم‌گیری چندمعیاره (مطالعه موردی در کشت کینوا)

نوع مقاله : مقاله پژوهشی

نویسنده

مؤسسه تحقیقات خاک و آب، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران.

10.22059/jwim.2026.403319.1264

چکیده

در این پژوهش با هدف شناسایی مرحله رشد بهینه کینوا برای مدیریت پایدار منابع آب در شرایط نیمه‌خشک کرج، سه شاخص کلیدی زیست‌توده، تبخیر–تعرق (ETc) و ضریب گیاهی (Kc) در چهار مرحله رشد (ابتدایی، توسعه، میانی و پایانی) اندازه‌گیری و با استفاده از روش تصمیم‌گیری چندمعیاره ارزیابی شدند.‌ داده‌ها بر اساس نتایج دو سال تحقیقات لایسیمتری و محاسبه تبخیر–تعرق مرجع به روش پنمن–مانتیث تحلیل شدند. نتایج نشان داد مرحله میانی با داشتن بیشترین مقدار ضریب گیاهی، بالاترین نیاز آبی و سهم قابل‌توجه در تجمع زیست‌توده، در ترکیب وزن‌دهی برابر به معیارها، بهترین رتبه را کسب کرد. نتایج تحلیل حساسیت نشان داد که رتبه‌بندی مراحل رشد کینوا نسبت به تغییر وزن معیارها پایدار است. در تمامی ترکیب‌های وزنی مدیریتی، تحلیل حساسیت تک‌متغیره (۲۰٪±) و تحلیل حساسیت چندمتغیره به روش مونت‌کارلو، مرحله میانی همواره رتبه نخست را حفظ کرد و به‌عنوان پایدارترین گزینه در فرآیند تصمیم‌گیری شناسایی شد، در حالی‌که مراحل ابتدایی و پایانی در تمامی سناریوها عملکرد ضعیفی از خود نشان دادند. این نتایج بیانگر آن است که مدیریت منابع آب باید بر مرحله میانی متمرکز شود تا بهره‌وری آب و عملکرد محصول به حداکثر برسد. یافته‌های این مطالعه چارچوبی کاربردی برای برنامه‌ریزی آبیاری و تخصیص بهینه منابع آب در کشت کینوا ارائه می‌کند.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Sustainable Irrigation Management Using a Multi-Criteria Decision-Making Approach: A Case Study in Quinoa Cultivation

نویسنده [English]

  • Reza Mohammadikia
Soil and Water Research Institute (SWRI), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran.
چکیده [English]

In this study, with the aim of identifying the optimal growth stage of quinoa for sustainable water resource management under the semi-arid conditions of Karaj, three key indicators biomass, crop evapotranspiration (ETc), and crop coefficient (Kc) were measured across four growth stages (initial, development, mid-season, and late season) and evaluated using a multi-criteria decision-making approach. The data were analyzed based on the results of two years of lysimeter experiments and reference evapotranspiration calculated using the Penman–Monteith method. The results showed that the mid-season stage, characterized by the highest crop coefficient, the greatest water requirement, and a significant contribution to biomass accumulation, achieved the highest rank under equal weighting of the criteria. Sensitivity analysis indicated that the ranking of quinoa growth stages was robust to changes in criterion weights. Across all managerial weighting combinations, as well as in single-variable sensitivity analysis (±20%) and multivariate sensitivity analysis using the Monte Carlo method, the mid-season stage consistently maintained the top rank and was identified as the most stable option in the decision-making process. In contrast, the initial and late growth stages exhibited poor performance across all scenarios. These results suggest that water resource management should focus on the mid-season stage to maximize water productivity and crop yield. The findings of this study provide a practical framework for irrigation planning and optimal allocation of water resources in quinoa cultivation.

کلیدواژه‌ها [English]

  • Crop coefficient
  • Evapotranspiration
  • Irrigation management
  • Monte Carlo method
  • Water use efficiency
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