کاربرد روش‎های ELECTRE TRI و پارامتریک در ارزیابی تناسب بخشی از اراضی دشت مغان برای کشت ذرت تحت آبیاری بارانی

نویسندگان

1 دانشجوی دکتری، گروه علوم و مهندسی خاک، دانشکده کشاورزی، دانشگاه تبریز

2 استاد گروه علوم و مهندسی خاک، دانشکده کشاورزی، دانشگاه تبریز

3 استاد گروه علوم و مهندسی خاک، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران

4 دانشیار گروه علوم و مهندسی خاک، دانشکده کشاورزی، دانشگاه تبریز

5 دانشیار گروه مهندسی آب، دانشکده کشاورزی، دانشگاه تبریز

چکیده

تعیین تناسب اراضی برای نیل به کشاورزی پایدار و حفاظت محیط زیست، بدلیل کاهش زمین­های مستعد در دهه گذشته بسیار مهم و ضروری است. در این تحقیق روش‎های پارامتریک استوری و ریشه دوم و همچنین روش چند معیاره الکتره ترای به منظور ارزیابی تناسب بخشی از اراضی دشت مغان به مساحت تقریبی 12000 هکتار با مطالعه 167 خاکرخ برای کشت ذرت تحت آبیاری بارانی استفاده شدند. پس از نمونه‎برداری، تجزیه نمونه‎ها، رده‎بندی خاک‎ها و استخراج مقادیر ویژگی‎ها با اعمال ضرایب وزنی، نهایتاً 8 ویژگی عمق خاک، آهک، گچ، pH، EC، ESP، شیب و اقلیم با استفاده از روش‎های‎ تجزیه به مؤلفه‎های اصلی و فاصله اقلیدسی برای محاسبات ارزیابی تناسب اراضی انتخاب شدند. وزن‎های معیارها با استفاده از روش ماتریس مقایسه زوجی و مقادیر مرز بین کلاس‎ها و آستانه‎ها در روش الکتره ترای با استفاده از جدول نیازمندی‎ها و داده‎های ویژگی‎های خاک و اراضی تعیین گردیدند. مقایسه آماری میانگین رتبه‎های اختصاص یافته به کلاس‎های تناسب در سطح کل منطقه و گروه‎های بزرگ خاک نشان داد که نتایج هر سه روش با هم اختلاف معنی‎داری داشته و روش الکتره ترای رتبه بهتری به خود اختصاص داده است. آزمون‎های هاتلینگ و ویلکس در تجزیه واریانس چند متغیره دقت تفکیک کلاس‎های تناسب در روش الکتره ترای را با توجه به مقدار P-value آن‎ها مناسب نشان دادند. همچنین مقایسه میانگین مقادیر ویژگی‎های خاک و اراضی بین کلاس‎های تناسب تفکیک شده در روش الکتره ترای با آزمون LSD اختلاف معنی‎دار را نشان داد که حاکی از دقت بالای این روش به دلیل تعیین حدود مناسب انتقالی (مرز بین کلاس‎ها)، مقادیر مناسب آستانه‎ها و وزن‎های ویژگی‎ها و استفاده از روابط و اصول منطق فازی در اجرای فرآیندهای محاسبات می‎باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Applying ELECTRE TRI and Parametric Methods in an Area of Dasht-e-Moghan Land for Suitability Evaluation of Maize Cultivation under Sprinkler Irrigation

نویسندگان [English]

  • J Seyedmohammadi 1
  • AA Jafarzadeh 2
  • F Sarmadian 3
  • F Shahbazi 4
  • MA Ghorbani 5
1 Ph.D. Student, Dept. of Soil Science, Faculty of Agriculture, University of Tabriz, Iran
2 Prof., Dept. of Soil Science, Faculty of Agriculture, University of Tabriz, Iran
3 Prof., Dept. of Soil Science, College of Agriculture and Natural Resources, University of Tehran, Iran
4 Associate prof., Dept. of Soil Science, Faculty of Agriculture, University of Tabriz, Iran
5 Associate prof., Dept. of Water Engineering, Faculty of Agriculture, University of Tabriz, Iran
چکیده [English]

Determination of land suitability to achive sustainable agriculture and environmental protection is very important and essential, because of arable land decrease in the last decade. In this research, parametric approaches including Storie and Square Root and ELECTRE TRI multiple criteria method have been used for suitability evaluation of the maize cultivation under sprinkler irrigation in 12000 ha area of Dasht-e-Moghan via consideration of 167 soil profiles. After soil sampling, analysis, classification and extraction of soil properties values by weighted coefficients, finally eight properties including soil depth, lime, gypsum, pH, EC, ESP, slope and climate were selected using principal component analysis and Euclidean distance methods for calculations of the land suitability evaluation. Criteria weights via pair-wise comparison matrix method and ELECTRE TRI profiles and thresholds limits were determined using requirements table, soil and land properties data. Statistical comparison of the allocated grades, mean values to the suitability classes in the region and soil great groups showed that the results of the three methods were significantly different and ELECTRE TRI method had the best grade. Hotelling and Wilks tests of multivariate variance analysis distinguished a suitable separation accuracy of suitability classes by their P-values in ELECTRE TRI method. Also comparing the mean values of the soil and land properties via LSD test showed a significant difference among the ELECTRE TRI suitability classes that implie the high accuracy of this method due to determination of the transition suitable limits (classes between limit), appropriate values of thresholds and criteria weights as well as usage of the fuzzy logic relations and principles for performance of the calculation processes.

کلیدواژه‌ها [English]

  • ELECTRE TRI
  • Irrigated cultivation
  • Square root
  • Statistical analysis
  • Storie
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