تحلیلی بر شبکه های بوم‌شناختی سرزمین در سطح شهر ایذه با استفاده از الگوریتم رقابت استعماری

نوع مقاله : علمی- پژوهشی

نویسندگان

1 استاد جغرافیا و برنامه‌ریزی شهری دانشکده جغرافیا دانشگاه تهران، تهران، ایران

2 دانشجوی دکتری جغرافیا و برنامه‌‌ریزی شهری، دانشکده‌‌ی جغرافیا، دانشگاه تهران، ایران.

چکیده

بوم‌شناسی سیمای سرزمین، ساختار منطقه شهری را مجموعه‌ای از شبکه بوم سیستم‌ها می‌پندارد و رابطه متقابل شهر و فرآیندهای طبیعی و بستر به وجود آورنده محیط زیستی آن را مورد ارزیابی و طرح‌ریزی قرار می‌دهد چنین رویکردی در گرو ایجاد نگرش سیستمی به ساختار بوم‌شناختی منطقه‌های شهری است. در این پژوهش به ارزیابی شبکه‌های بوم‌شناختی سیمای سرزمین در سطح شهر ایذه پرداخته می‌شود. پژوهش حاضر به لحاظ هدف توسعه ای ـ کاربردی و از لحاظ روش شناسی توصیفی ـ تحلیلی مبتنی بر مطالعات کتابخانه ای و بررسی های میدانی است. برای دستیابی به اهداف تحقیق، 5 شاخص با 17 زیر شاخص استخراج شد. برای ارزیابی شبکه‌های بوم‌شناختی سیمای سرزمین در سطح شهر ایذه از طریق الگوریتم رقابت استعماری (درخت پوشای مینیمم MST) در محیط نرم‌افزار Matlab 2016 استفاده گردیده است و برای فضایی سازی شاخص های موردمطالعه در سطح شهر ایذه از روش (Tracking Analyst Tools) در فرآیند تحلیل شبکه (Network Analyst Tools) در محیط نرم‌افزار ArcGIS استفاده شد. نتایج نشان می‌دهد: بیشترین قسمت سیمای سرزمین منطقه مورد مطالعاتی را لکه‌های ساخته‌شده و کمترین مساحت را لکه‌های آبی تشکیل می‌دهند در پهنه ساخت‌وساز در سال 1365 از 100 درصد پهنه موجود در سطح شهر ایذه 44/42 درصد، در سال 1385 این عدد به 27/49 درصد و در سال 1397 به 02/59 درصد رسیده است در پهنه سبز در سال 1365 54/18 درصد، در سال 1385 این عدد به 63/14 درصد و در سال 1397 به 66/13 درصد رسیده است و در پهنه فضاهای باز و آبی در سال 1365 به ترتیب 56/37 درصد و 45/1 درصد در سال 1385 این عدد به ترتیب  12/35 درصد و 98/0 و در سال 1397 به ترتیب 34/26 درصد و 98/0 رسیده است.

کلیدواژه‌ها


عنوان مقاله [English]

An Analysis of Land Ecological Networks in Izeh City Using Colonial Competition Algorithm

نویسندگان [English]

  • Keramatollah Ziyari 1
  • Omid Latifi 2
1 Tehran University Professor of geography and urban planning.
2 PhD Student, Department of Geography and Urban Planning, Faculty of Geography, University of Tehran, Iran
چکیده [English]

Landscape ecology considers the structural complex of an urban area as a set of ecosystem networks and evaluates and designs the interrelationship between the city and natural processes and the environment that creates it. Such an approach depends on creating a systemic evaluation of the ecological structure of urban areas.  In this research, the ecological networks of the land landscape in the city of Izeh are evaluated. The present applied research is descriptive-analytical and uses library and field studies to collect data.  To achieve the research objectives, 5 indicators with 17 sub-indicators were extracted. To evaluate the ecological networks of the land landscape in Izeh City, Colonial Competition Algorithm (MST minimum coverage tree) was used in Matlab 2016 Software environment and to spatialize the studied indicators in Izeh City, Tracking Analyst Methodwas used. The Network Analyst Tools process was put in ArcGIS Software environment.  The results show that the most part of the landscape of the study area is made up of spots and the least part of the area is made up of water spots. In 1986, area in Izeh City, 42.44% of the total area was allocated to construction zone while2006, this amount reached 49.27% and in 2018, it reached 59.02%. In 1986, 18.54% of the total area of Izeh City was allocated to green space zone while in 2006, this amount reached 14.63% and in 2018, it reached 13.66%. Furthermore, in 1986, 37.56% of the total area was allocated to open spaces and 1.45%, was allocated to water zone. This is while in 2006, these numbers reached 35.12% and 0.98%, respectively, and in 2018, they reached 26.34% and 0.98%, respectively.

کلیدواژه‌ها [English]

  • Network
  • Ecology
  • Landscape
  • Colonial Competition
  • Izeh City
 
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