با همکاری مشترک دانشگاه پیام نور و انجمن ارزیابی محیط زیست ایران

نوع مقاله : علمی-پژوهشی

نویسندگان

1 دانشگاه شهید چمران

2 دانشگاه شهید چمران اهواز

چکیده

یکی از عملیات ضروری در مطالعات جغرافیایی شهرها، تجزیه‌وتحلیل رشد شهری با استفاده از داده‌های زمانی- مکانی میباشد. در این زمینه می‌توان با استفاده از شاخص‌های آماری، گسترش افقی و رشد شهرها را اندازه‌گیری نمود. هدف اصلی این مقاله دیده‌بانی رشد شهری برای مناطق 9 گانه شهر شیراز در بازه زمانی 85تا91 و کمی‌سازی درجه آزادی رشد شهری، درجه گسترش افقی بی‌رویه شهری و درجه خوب‌بودن رشد شهری است. به این منظور، از آزمون کای اسکور پیرسن برای بررسی درجه آزادی شهر و از آنتروپی شانون برای تعیین درجه اسپرال شهری استفاده شده است و درنهایت درجه خوب‌بودن رشد شهری بررسی گردید. نتایج نشان می‌دهد که درجه آزادی کلی رشد شهری برای کل شهر بالا می‌باشد. در دوره زمانی 88تا89 رشد ساخت‌وساز مشاهده‌شده از رشد ساخت‌وساز موردانتظار پایین‌تر است و نیز در منطقه1، رشد مشاهده‌شده با رشد موردانتظار در ساخت‌وساز شهری برابر می‌باشد. آنتروپی شانون کلی نیز با در نظر گرفتن کل شهر بیانگر متمرکزبودن آن می‌باشد و درنهایت آنالیز درجه خوب شهری، نشان می‌دهد که رشد شهر شیراز در دوره زمانی مذکور مطلوب بوده است و میزان آن در همه مناطق مثبت می‌باشد.

کلیدواژه‌ها

عنوان مقاله [English]

Analysis of the spatial-temporal characteristics of urban expansion areas of the Shiraz city (Period "1391-1385")

نویسندگان [English]

  • Saeed Amanpour 1
  • Somayeh Gholami 1
  • Farahnaz Ghafarzadeh 2

1 Shahid Chamran University of Ahvaz

2 Shahid Chamran University of Ahvaz

چکیده [English]

One of the essential functions in geografialy urban studies by using of spatial and temporal data is urban growth analysis. In this context, urban horizontal expansion can be measured by statistical indicator. The main objective of this article is monitoring of growth of 9 urban areas, quantifying the degree of urban free growth, the degree of uncontrolled urban expansion, and the benefits of urban growth for a period of years 85-91, in the Shiraz city. To achieve this goal, the K-Score Pearson test is used for measuring the degree of city expansion, and Shannon Entropy is used for the degree of city sprawl, and finally the degree of urban growth was surveyed. These dimensions were measured for both the period of 85-91 and 9areas of Shiraz. Results show that the degree of freedom for a period of time is high. In the period of 88-89 observed growth of construction was less than expected. In area 1 the observed growth is equal to the expected growth. By considering the whole city, the general Shannon Entropy also shows concentration. In the end, the analysis of city benefits indicates that Shiraz has experienced a favorable positive city growth in all regions.

کلیدواژه‌ها [English]

  • urban sprawl
  • Shannon entropy model degrees of freedom
  • City
  • GIS
  • Shiraz
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