تحلیل راهبردی رویکرد شهر اسفنجی برای پهنه‌بندی مناطق مستعد توسعه زیرساخت‌های سبز در شهر زنجان

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکترای جغرافیا و برنامه‌ریزی شهری، گروه جغرافیا، دانشکده علوم اجتماعی، دانشگاه زنجان، زنجان، ایران

2 دانشیار، گروه جغرافیا، دانشکده علوم اجتماعی، دانشگاه زنجان، زنجان، ایران

چکیده

رویکرد شهر اسفنجی به­عنوان پارادایمی نوین در مدیریت پایدار آب‌های سطحی، پاسخی راهبردی به چالش‌های ناشی از توسعه شهری شتابان و تغییر چرخه هیدرولوژیکی طبیعی است. این رویکرد با بهره‌گیری از زیرساخت‌های سبز-آبی و راه‌حل‌های طبیعت‌محور، تقویت تاب‌آوری شهری در برابر سیلاب و آب‌گرفتگی، به بهبود کیفیت زندگی شهروندان و حفظ سلامت اکوسیستم‌های شهری منجر می‌شود. پژوهش حاضر با روش، توصیفی–تحلیلی به بررسی و تحلیل راهبردی رویکرد شهر اسفنجی برای پهنه‌بندی مناطق مستعد توسعه زیرساخت‌های سبز در شهر زنجان پرداخته است. شاخص‌های تحقیق در دودسته، داده‌های آماری عینی که در قالب تحلیل­های GIS به‌صورت نقشه استخراج و تحلیل گردید. دوم داده‌های ذهنی در قالب مؤلفه‌های شهر اسفنجی شامل 4 مؤلفه رفاهی-فرهنگی؛ حمایتی؛ تنظیم‌کننده اکوسیستم شهر؛ و تولیدی می‌باشد. برای تحلیل داده‌ها از تکنیک همپوشانی فازی در محیط GIS و آزمون تک‌نمونه‌ای T با نرم‌افزار SPSS و مدل معادلات ساختاری با نرم‌افزار SmartPLS استفاده شد. یافته‌های تحقیق نشان می‌دهد که ۴۰ درصد از مساحت شهر (عمدتاً در مناطق جنوبی و جنوب­غربی) در پهنه‌های با اولویت بالا و بسیار بالا برای آب‌گرفتگی قرار دارند. این مناطق بحرانی عمدتاً با شیب کمتر از ۵ درصد، تراکم بالای بافت سخت (بیش از ۶۰٪) و فاصله بیش از ۵۰۰ متر از مسیل‌های اصلی مشخص می‌شوند. بدین­ترتیب، تمرکز کانون‌های بحرانی آب‌گرفتگی در مناطق جنوبی و جنوب­غربی شهر است. همچنین، مؤلفه‌های تولیدی با ضریب 36.83 و حمایتی با ضریب 41.32 در وضعیت نسبتاً مطلوبی قرار دارند، از طرفی، طبق تحلیل مدل معادلات ساختاری، مؤلفه رفاهی-فرهنگی با ضریب مسیر 3.356 بیشترین سهم را در تبیین شهر اسفنجی در زنجان دارد. در مجموع، تحقق شهر اسفنجی در زنجان نیازمند عزمی جدی برای تحول در مدیریت یکپارچه آب‌های سطحی، بازطراحی فضاهای شهری بر اساس الگوهای نفوذپذیری و تلفیق راهکارهای فنی با ارتقای شاخص‌های فرهنگی-رفاهی است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Strategic analysis of the sponge city for zoning areas susceptible to green infrastructure development in Zanjan city

نویسندگان [English]

  • Majid Hazrati 1
  • Mohammad Taghi Heydari 2
1 PhD Student in Geography and Urban Planning, Department of Geography, Faculty of Social Sciences, University of Zanjan, Zanjan, Iran
2 Associate Professor, Department of Geography, Faculty of Social Sciences, University of Zanjan, Zanjan, Iran
چکیده [English]

The sponge city approach, as a new paradigm in sustainable surface water management, is a strategic response to the challenges arising from accelerated urban development and changes in the natural hydrological cycle. The present study is a descriptive-analytical study following a strategic analysis of the sponge city approach for zoning areas susceptible to green infrastructure development in the city of Zanjan. The research indicators are in two categories: objective statistical data that were extracted and analyzed in the form of a map, and GIS analyses. The second is subjective data in the form of sponge city components, including 4 welfare-cultural components: supporting, regulating the city ecosystem, and productive. For data analysis, the fuzzy overlap technique in the GIS environment, the one-sample T-test with SPSS software and the Structural Equation Modeling with SmartPLS software were used. The research findings show that 40% of the city area (mainly in the southern and southwestern regions) is located in areas with high and very high priority for flooding. These critical areas are mainly characterized by a slope of less than 5 percent, a high density of hard tissue (more than 60%), and a distance of more than 500 meters from the main waterways. Thus, the concentration of critical flood hotspots is in the southern and southwestern regions of the city. Also, the production components with a coefficient of 36.83 and the support components with a coefficient of 41.32 are in a relatively favorable state. On the other hand, according to the structural equation model analysis, the welfare-cultural component with a path coefficient of 3.356 has the largest contribution to explaining the sponge city in Zanjan. Overall, realizing a sponge city in Zanjan requires a serious determination to transform integrated surface water management, redesign urban spaces based on permeability patterns, and combine technical solutions with improving cultural-welfare indicators.

کلیدواژه‌ها [English]

  • Sponge City
  • City Zoning
  • Green Infrastructure
  • Urban Flooding
  • Zanjan City

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جغرافیا و آینده پژوهی منطقه‌ای
دوره 4، شماره 2 - شماره پیاپی 14
تابستان
شهریور 1405
صفحه 142-157

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