شناسایی استعداد اراضی و مشخص‎سازی محدودیت‎ها برای کشت آبی گندم در بخشی از اراضی دشت قزوین با استفاده از تکنیک‎های فازی و AHP

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار پژوهش، موسسه تحقیقات خاک و آب، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران.

2 استادیار پژوهش، موسسه تحقیقات خاک و آب، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران

3 دانشیار پژوهش، موسسه تحقیقات خاک و آب، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران

4 محقق بخش تحقیقات خاک و آب، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان قزوین، سازمان تحقیقات، آموزش و ترویج کشاورزی، قزوین، ایران

5 موسسه تحقیقات خاکمحقق موسسه تحقیقات خاک و آب، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران و آب

چکیده

ارزیابی دقیق تناسب اراضی برای تولید محصولات کشاورزی نقش مهمی در کاهش اثرات تخریب اراضی دارد. مطالعه حاضر با هدف بکارگیری تکنیک‎های فازی، AHP و GIS برای تعیین درجه تناسب اراضی جهت تولید گندم در اراضی به وسعت حدود 61000 هکتار واقع در دشت قزوین انجام شد. با بررسی نقشه‎های کاربری، زمین‎شناسی، توپوگرافی، شیب و تصویر ماهواره‎ای منطقه، محدوده واحدهای اولیه خاک تفکیک شد سپس در واحدهای تفکیک شده، خاکرخ‎ها حفر و تشریح شدند و نمونه‎برداری از افق‎های خاک انجام شد. براساس مشخصات خاکرخ‎های شاهد هر واحد نقشه، ارزیابی تناسب اراضی برای کشت گندم با استفاده از روش‎ فازی با AHP و روش ریشه دوم انجام شد و نقشه تناسب اراضی در محیط GIS تهیه گردید. با توجه به نتایج، کاربرد روش فازی با AHP مشخص کرد که 1/48169 هکتار، 2/78 درصد از اراضی دارای تناسب متوسط (S2)، 9086 هکتار، 7/14 درصد دارای تناسب بحرانی (S3) و 3/4346 هکتار، 1/7 درصد نامناسب در حال حاضر (N1) می‎باشند. مهمترین خصوصیات محدودکننده، شیب، pH، ESP، زهکشی و شوری خاک بودند. نتایج مشخص کرد که روش تلفیقی فازی با AHP با ارزش ضریب تبیین بیشتر بین شاخص اراضی و عملکرد در مقایسه با روش پارامتریک ریشه دوم و ریشه دوم اصلاح شده، توانسته دقت ارزیابی را به دلیل تعیین حدود مناسب نقاط بحرانی، وزن‎های مناسب برای خصوصیات، استفاده از روابط و اصول منطق فازی و توابع عضویت مناسب افزایش دهد. بنابراین روش ذکر شده می‎تواند به عنوان روشی دقیق و مؤثر برای برنامه‎ریزی و مدیریت بهتر کاربری اراضی برای تولیدات کشاورزی باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Identification of Land Potential and Characterizing Limitations for Irrigated Wheat Cultivation in a Part of Qazvin Plain Land Using Fuzzy and AHP Techniques

نویسندگان [English]

  • Mir Naser Navidi 1
  • Javad Seyedmohammadi 2
  • Kambiz Bazargan 3
  • azam khosravinejad 4
  • Bahareh Delsouz khaki 5
1 Assistant Prof., Soil and Water Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
2 Assistant Prof., Soil and Water Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
3 Associate Prof., Soil and Water Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
4 Researcher of Soil and Water Research Department, Qazvin Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Qazvin, Iran,
5 Researcher Soil and Water Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
چکیده [English]

Accurate assessment of land suitability for agricultural production plays an important role in reducing the effects of land degradation. The aim of this study was to apply fuzzy, AHP and GIS techniques to determine the degree of land suitability for wheat production in lands of about 61,000 ha located in Qazvin plain. By Investigating the land use maps, geology, topography, slope and satellite image of the region, the delineation of primary soil units was separated, then in the separated units, profiles were excavated and described, and soil horizons were sampled. Based on the characteristics of representative profiles in each map unit, land suitability assessment for wheat cultivation was performed using fuzzy method with AHP and square root method and land suitability map was prepared in GIS environment. According to the results of AHP-fuzzy method 48169.1 ha (78.2%) of the land are moderately suitable (S2), 9086 ha (14.7%) marginally suitable (S3) and 4346.3 ha (7.1%) currently unsuitable (N1). The most important limiting characteristics were slope, pH, ESP, drainage and soil salinity. The results showed that the fuzzy method integrated with AHP was able to evaluate accurately with high value of determination coefficient between land index and yieldcompared to the parametric method of the square root and the modified square root due to determining the appropriate limits of critical points, suitable weights for characteristics, use of fuzzy logic relations and principles and suitable membership functions. Therefore, the mentioned integrative method can be an accurate and effective method for better planning and management of land use for agricultural production.
 

Identification of Land Potential and Characterizing Limitations for Irrigated Wheat Cultivation in a Part of Qazvin Plain Land Using Fuzzy and AHP Techniques

کلیدواژه‌ها [English]

  • AHP
  • Fuzzy sets
  • GIS
  • land suitability
  • Wheat
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