ارزیابی توان اکولوژیک برای تعیین پهنه های بهینه کاربری اراضی در مناطق حساس محیط زیستی (مطالعه موردی: محدوده شهر طالقان) (مقاله علمی وزارت علوم)
درجه علمی: نشریه علمی (وزارت علوم)
آرشیو
چکیده
طرح مسئله: شهر طالقان به دلیل موقعیت جغرافیایی بی نظیر خود، طی سالیان متمادی شاهد استفاده ناآگاهانه و تخریب های محیطی گستره بوده و شرایط ناپایداری ازلحاظ محیط زیستی فراروی این محدوده قرار گرفته است. هدف: هدف پژوهش حاضر، احساس ضرورت برای حفظ محیط زیست این منطقه حساس شهری و کاهش آثار مخرب محیط زیستی تغییر کاربری هاست. روش پژوهش: ابتدا منابع اکولوژیکی محدوده موردمطالعه مانند شیب، ارتفاع، جهت شیب، خاک، پوشش گیاهی و ... تهیه شد. سپس به منظور ارزیابی توان اکولوژیکی منطقه، فرایند تجزیه وتحلیل و جمع بندی داده ها انجام، آنگاه فرایند ارزیابی توان اکولوژیکی محدوده طبق مدل مخدوم تشریح و درنهایت کاربری های بهینه اراضی منطقه براساس توان هر یک از واحدهای محیط زیستی محدوده بیان و وضع موجود و مطلوب کاربری اراضی محدوده موردمطالعه مقایسه شد. نتایج پژوهش: بیشترین مساحت محدوده موردمطالعه، شیبی کمتر از 1 تا 9 درصد دارد و منطبق با نهشته های رسوبی و دشت های سیلابی و دامنه ای است. در حال حاضر بیشترین وسعت محدوده موردمطالعه را کاربری مرتع و سپس کاربری کشاورزی تشکیل می دهد که با توجه به توان اکولوژیکی منطقه، مساحتی از کاربری مرتع می تواند به کاربری کشاورزی و مسکونی تبدیل شود. بیشترین مساحت محدوده مناسب برای کاربری کشاورزی درجه ۲ و ۳ بوده و در مرتبه بعد، کاربری مرتع داری درجه ۲ و ۳ بیشترین مساحت را به خود اختصاص داده و شهرک طالقان و روستاهای منطقه ازنظر توان اکولوژیک در محدوده توان مناسب درجه 2 برای توسعه شهری قرار گرفته است. نوآوری: استفاده از روش تلفیق معیارهای محیط زیستی و شهری برای استخراج کاربری های بهینه در محدوده سیاسی شهر طالقان، نوآوری این مقاله محسوب می شود.Evaluation of Ecological Potential for Determining Optimal Land Use in Environmentally Sensitive Areas (Case Study: Taleghan City)
Abstract Problem Definition: The city of Taleghan has experienced uninformed landuse and environmental degradation for many years due to its unique geographical location, thus facing environmental instability conditions. Aim: The aim of the present study was feeling the need to preserve the environment of this sensitive urban area and reduce the destructive environmental effects of land use change. Methods: First, the ecological sources of the study area, such as slope, height, soil, vegetation, etc., were prepared. Then, data analysis was done to assess the ecological capability of the region. After that, the process of assessing the ecological capability of the area was followed according to Makhdoom’s model. Finally, the optimal land use was determined according to the power of each environmental unit of the area and the desirable status of land use in the study area. Results: The highest area under study had a slope of less than 1-9 %, which was consistent with those of the alluvial deposits and flood plains. At present, the maximum extent of the study area was field and then agricultural use. According to the ecological capability of the region, a rangeland area could be converted to agricultural and residential applications. The highest suitable area for agricultural use was in the order range of 2 and 3, while most of the area was in the next order range of 2 and 3. Taleghan City and its district villages were located in the suitability range for urban development. Innovation: The aim of this study was the integration of environmental and urban metrics to extract the optimal land uses in the political domain of Taleghan City. Keywords: Urban Sensitive Areas, Environmental Capability, Optimum Land Use, Taleghan City. References - Akıncı, H., Özalp, A., & Turgut, B. (2013). Agricultural land use suitability analysis using GIS and AHP technique. 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