Journal of Water and Soil Science
علوم آب و خاک
jwss
Agriculture
http://jstnar.iut.ac.ir
0
user
2476-3594
2476-5554
10.47176/jwss
fa
jalali
1398
3
1
gregorian
2019
6
1
23
1
online
1
fulltext
fa
ارزیابی کمی کیفیت خاک در کاربریهای مختلف دشت شهرکرد به روش فرایند تجزیه سلسله مراتبی
Assessment Quantitative of Soil Quality in Different Uses of Shahrekord Plain Using the Analytical Hierarchical Process (AHP)
عمومی
Ggeneral
پژوهشي
Research
<div style="text-align: justify;"><strong><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">ارزیابی کیفیت خاک، به ایجاد تعادل بین عملکرد و منابع خاک، بهبود کیفیت خاک و دستیابی به کشاورزی پایدار کمک می­کند.</span></span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;"> برای ارزیابی کمی کیفیت خاک دشت شهرکرد، 106 نمونه خاک مرکب از عمق صفر تا 25 سانتی­متر جمع­آوری شدند.</span></span></span> <span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">بعد از تیمار­های اولیه خاک، </span></span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">11 </span></span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">ویژگی فیزیکی و شیمیایی </span></span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">بهعنوان کل داده</span></span></span> <span style="font-family:times new roman bold,serif;"><span style="font-size:9.0pt;">(Total Data Set)</span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">، به روش­های استاندارد تعیین شدند. تحلیل آماری نشان داد </span></span></span><span dir="RTL"><span style="font-family:lotus;"><span style="font-size:11.0pt;">که </span></span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">تجزیه به مؤلفه­های اصلی (</span></span></span><span style="font-family:times new roman bold,serif;"><span style="font-size:9.0pt;">Principle Component Analysis, PCA</span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">) سودمند است. </span></span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">حداقل داده­ها </span></span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">(</span></span></span><span style="font-family:times new roman bold,serif;"><span style="font-size:9.0pt;">Minimum Data Set</span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">)</span></span></span> <span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">با</span></span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;"> استفاده از </span></span></span><span style="font-family:times new roman bold,serif;"><span style="font-size:9.0pt;">PCA </span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">انتخاب شدند. فرایند تحلیل سلسله مراتبی (</span></span></span><span style="font-family:times new roman bold,serif;"><span style="font-size:9.0pt;">Analytical Hierarchy Process</span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">) برای تعیین کمی اولویت­ها و وزندهی شاخص­ها انجام شد. کیفیت خاک­ها با استفاده از شاخص­های تجمعی</span></span></span> <span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">(</span></span></span><span style="font-family:times new roman bold,serif;"><span style="font-size:9.0pt;">Integrated Quality Index, IQI</span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">) و شاخص نمرو (</span></span></span><span style="font-family:times new roman bold,serif;"><span style="font-size:9.0pt;">Nemero Quality Index, NQI</span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">)</span></span></span> <span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">در مجموعه داده­ها، تعیین شدند. نتایج نشان داد</span></span></span><span dir="RTL"><span style="font-family:lotus;"><span style="font-size:11.0pt;">ند</span></span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;"> که ترتیب کیفیت خاک در کاربری­ها عبارتست از: مراتع </span></span></span><span style="font-family:times new roman bold,serif;"><span style="font-size:9.0pt;"><</span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;"> کشت دیم > کشت آبی. </span></span></span><span dir="RTL"><span style="font-family:lotus;"><span style="font-size:11.0pt;">ضریب </span></span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">همبستگی</span></span></span><span style="font-family:times new roman bold,serif;"><span style="font-size:9.0pt;">IQI </span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">، </span></span></span><span dir="RTL"><span style="font-family:lotus;"><span style="font-size:11.0pt;">با</span></span></span> <span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">کل دادهها و حداقل داده</span></span></span><span dir="RTL"><span style="font-family:lotus;"><span style="font-size:11.0pt;">ها</span></span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;"> 97/0 و این مقدار برای </span></span></span><span style="font-family:times new roman bold,serif;"><span style="font-size:9.0pt;">NQI</span></span> <span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">برابر </span></span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">98/0 بود. همبستگی بین نقشههای کیفیت خاک تجمعی و نمرو برای کل دادهها 87/0 و برای حداقل دادهها 91/0 بود. طبقهبندی نقشه کیفیت خاک </span></span></span><span style="font-family:times new roman bold,serif;"><span style="font-size:9.0pt;">IQI-TDS</span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;"> نشان داد</span></span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;"> 5/12 و 5/15 درصد اراضی بهترتیب در شرایط بسیار بالا و بسیار پایین کیفیت قرار دارند</span></span></span><span dir="RTL"><span style="font-family:b lotus;"><span style="font-size:11.0pt;">.</span></span></span></strong></div>
<div style="text-align: justify;">Assessment of soil quality helps to make a balance between soil function and soil resources, improving soil quality and achieving the sustainable agriculture. For the quantitative evaluation of soil quality in the Shahrekord plain, Chaharmahal va Bakhtiari province, 106 compound surficial soil samples (0-25 cm) were collected. After the pre-treatments of soil samples, 11 physico-chemical soil characteristics/indicators as the total data set (TDS) were measured using the standard methods. Statistical analysis showed the usefulness of Principle Component Analysis (PCA) transformation. The minimum data set (MDS) was selected using PCA. Analytical Hierarchy Process (AHP) was carried out for the quantitative determination of indicator priorities and weights. Soil quality of the samples was calculated by introducing TDS and MDS into Integrate Quality Index (IQI) and Nemero Quality Index (NQI). The results showed the soil quality of the land uses was as Rangelands> Drylands<span dir="RTL"><</span>Irrigated croplands. The correlation coefficient between IQI-TDS and IQI-MDS was 0.97, while this value for NQI-TDS and NQI-MDS was 0.98. The correlation coefficient between IQI-TDS and NQI-TDS was 0.87 and that between IQI-MDS and NQI-MDS was 0.91. Classification of the resulted soil quality map IQI-TDS revealed that 12.5 % and 15.5 % of the plain were in very high and low quality conditions, respectively.<span dir="RTL"></span></div>
شاخص کیفیت تجمعی, شاخص کیفیت نمرو, کل دادهها, حداقل دادهها, دشت شهرکرد
Integrated Quality Index, Nemoro Quality Index, Minimum Data Set, Total Data Set, Shahrekord plain
293
307
http://jstnar.iut.ac.ir/browse.php?a_code=A-10-3841-1&slc_lang=fa&sid=1
A.
Hematifard
علی
همتی فرد
Ali.hemati999@gmail.com