Determining the structure and map of vegetation of Mirabad protected area (Iran) using DEM and Geographic Information Systems (GIS)

Document Type: Systematics and Biodiversity of Plants

Authors

1 MSc Student, Department of Biology (Plant Sciences), Faculty of Sciences, Urmia University, Urmia, Iran

2 Associate Prof., Department of Biology (Plant Sciences), Faculty of Sciences, Urmia University, Urmia, Iran

Abstract

The Mirabad protected area (S. Azarbaijan, Iran) has a variety of ecological nurseries due to elevation of the sea, physiographic factors, micro-climates and soil types, and has high vegetation diversity. Mirabad protected area in the Piranshahr-Sardasht axis is between the latitudes of 36° 23' and 36° 31' north, and the lengths 45° 15' and 45° 25', with an area of ​​11435 ha, in the elevation range 1177–2068 m above sea level. The average rainfall and annual temperature over the age of 19 years are 696 mm and 12.3 °C, respectively. The present study, examines the vegetation structure of the region in the year 2017 where two types of classification and GIS were used. Thus, with the help of ArcGIS software (ArcGIS 9.3), maps, slope, aspect, and elevation were prepared. From the integration of these maps, in the map of the units of work, 224 study units were homogeneous and identified and then field studies were done in these units. To sample vegetation by random distribution method, Whittaker multi-scale unit parts in plant types, 447 plant species were identified from 81 families and 301 genera. In the next step, plant types were based on biological diversity at a similar level of 75% in four distinct clusters, with the highest genetic distance between the Astragaleto-Ferulaetum plant type and the Querceto-Amygdaletum plant type. The highest and lowest similarity index was observed between Gulke 57% Gulke and Soeystan 12%, respectively. Biological diversity was higher in Quercetum, Querceto-Amygdaletum and Querceto-Pistaciaetum species than in other types. 
 

Keywords

Main Subjects


Article Title [Persian]

تعیین ساختار و نقشه پوشش گیاهی منطقه حفاظت‌شده میرآباد با استفاده از مدل رقومی ارتفاع زمین (DEM) و سیستم‌های اطلاعات جغرافیایی (GIS)

Authors [Persian]

  • فاروق سلیمانی 1
  • جلیل خارا 2
1 دانشجوی کارشناسی ارشد گروه زیست‌شناسی (علوم گیاهی)، دانشکده علوم، دانشگاه ارومیه، ارومیه، ایران
2 دانشیار گروه زیست‌شناسی (علوم گیاهی)، دانشکده علوم، دانشگاه ارومیه، ارومیه، ایران
Abstract [Persian]

منطقه حفاظت‌شده میرآباد آشیان‌های اکولوژیکی متنوعی دارد که به علت ارتفاع از سطح دریا، عوامل فیزیوگرافی، خرد اقلیم‌ها و انواع خاک ایجاد شده‌اند و از تنوع گیاهی بالای برخوردار است. جهت مطالعه و بررسی ساختار پوشش گیاهی منطقه، از دو روش طبقه‌بندی و سیستم اطلاعات جغرافیایی (GIS) به کار گرفته شد. به این ‌صورت که با کمک نرم‌افزار (9.3 ArcGIS) نقشه‌های شیب، جهت و ارتفاع تهیه و از تلفیق این نقشه‌ها، نقشه واحدهای کاری تهیه شد که در آن، 224 واحد کاری مطالعاتی همگن تفکیک و مشخص گردید و سپس مطالعات صحرایی در این واحدها انجام گرفت. برای نمونه‌برداری پوشش گیاهی به روش توزیع تصادفی قطعات نمونه چنداندازه‌ای ویتاکر در تیپ‌های گیاهی، 447 گونه گیاهی از 81 تیره و 301 جنس شناسایی گردید. مرحله بعد تیپ‌های گیاهی براساس طیف زیستی در سطح تشابه 75 درصد در چهار کلاستر مجزا قرار گرفتند که بیشترین فاصله ژنتیکی بین تیپ گیاهی Astragaleto-Ferulaetum با تیپ گیاهی Querceto-Amygdaletum وجود داشت. بالاترین و کمترین شاخص تشابه 
به ترتیب بین تیپ‌های گیاهی گولک 57 درصد و گولک و سویستان 12 درصد مشاهده گردید. تنوع زیستی در تیپ‌های گیاهی Quercetum، Querceto-Amygdaletum و Querceto-Pistaciaetum نسبت به تیپ‌های دیگر بیشتر بوده است.
 

Keywords [Persian]

  • تیپ گیاهی
  • سردشت
  • شاخص تشابه
  • طبقه‌بندی
  • قطعات نمونه چنداندازه‌ای ویتاکر
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