ارزیابی کیفیت شیمیایی چند خاک زیر کشت گندم- ذرت با استفاده از مدل‌های کیفیت خاک در بخشی از جنوب شرقی مشهد

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری دانشگاه فردوسی مشهد

2 دانشیار دانشگاه فردوسی مشهد

3 استاد دانشگاه فردوسی مشهد

4 استادیار دانشگاه فردوسی مشهد

چکیده

ارزیابی جامع از کیفیت اراضی کشاورزی به دستیابی به کشاورزی پایدار کمک می نماید. لذا ارائه روش­های مناسب ارزیابی کیفیت خاک برای بهبود راهکارهای مدیریتی و عملیات کشاورزی امری ضروری است. در این راستا مدل­های مختلف کیفیت خاک و روش­های انتخاب ویژگی­های مؤثر برای ارزیابی کیفیت شیمیایی-بیولوژیکی خاک مورد مقایسه قرار گرفتند. دوازده پارامتر شیمیایی- بیولوژیکی را به عنوان مجموعه کل ویژگی­های مؤثر برکیفیت خاک (TDS) در نظر گرفته و با استفاده از روش تجزیه مولفه­های اصلی (PCA) مجموعه حداقل ویژگی­های مؤثر انتخاب گردید. چهار ترکیب حاصل از روش­ها و مدل­های کیفیت محاسبه و مناسبترین شاخص و ویژگی­های مؤثر جهت ارزیابی کیفیت خاک انتخاب شدند. ضریب تبیین بین شاخص­های IQITDS و IQIMDS معادل 883/0  R2=و بین NQITDS و NQIMDS معادل 818/0 R2= نشان داد که شاخص کیفیت تجمعی (IQI) کارایی بهتری برای ارزیابی کیفیت خاک منطقه مورد مطالعه دارد. شاخص IQITDS ارزیابی دقیق­تر و جامع­تری از کیفیت خاک را در اختیار قرار می­دهد. با این وجود استفاده از مجموعه حداقل ویژگی­های مؤثر بر کیفیت خاک (MDS) کاهش حجم کار و هزینه را همراه با دقت مناسب موجب می­شود.

کلیدواژه‌ها


عنوان مقاله [English]

Chemical Quality Assessment of Wheat-Maize Cultivated Soils by Using Soil Quality Models in an Agricultural Region of Southeast Mashhad

نویسندگان [English]

  • M. Ghaemi 1
  • A. R. Astaraei 2
  • S. H. Sanaeinejad 2
  • M. Nassiri Mahalati 3
  • H. Emami 4
1 Ph.D. student, Ferdowsi University of Mashhad
2 Associate Professor, Ferdowsi University of Mashhad
3 Full Professor, Ferdowsi University of Mashhad
4 Assistant Professor, Ferdowsi University of Mashhad
چکیده [English]

Comprehensive evaluation of cultivated soil quality helps to achieve sustainable agriculture. Providing suitable methods for soil quality assessment is essential for management strategies to improve agricultural practices. In this regard, various models of soil quality and feature selection methods were compared to assess the soil chemical and biological quality. Twelve chemical and biological variables were considered as Total Data Set (TDS) and Minimum Data Set (MDS) were chosen by using the principal component analysis (PCA). Four combinations of methods and models for calculating quality and also the most effective indicators for assessment of soil quality and features were chosen. The linear relationships between IQITDS and IQIMDS (R2=0.883) and between NQITDS and NQIMDS (R2=0.818) indicated that IQI had better performance for soil quality assessment in the study area. IQITDS index provides more comprehensive and more accurate assessment of soil quality than other indices. However, the use of Minimum Data Set (MDS) reduces workload and costs associated with the care that is appropriate.

کلیدواژه‌ها [English]

  • Agricultural land use
  • Integrated Quality Index
  • Minimum data set
  • Nemoro Quality Index
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