نشریه محیط زیست طبیعی

تعیین آسیب‏پذیری اکولوژیکی شهرستان طرقبۀ شاندیز با استفاده از روش عینی آسیب‏ پذیری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، دانشکدۀ منابع طبیعی، دانشگاه تهران

2 استادیار گروه محیط‏زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران

چکیده

تجربۀ پیامدهای ناشی از توسعۀ بی‏ قید و شرط و توجه‌نکردن به محیط ‏زیست در گذشته، سبب شده است که امروزه بشر دریابد یگانه راه حفظ منابع‏طبیعی در بلند‏مدت، توجه به محدودیت‏ها و توان طبیعی محیط ‏زیست است. یکی از اقدامات مهم برای در‏ نظر گرفتن این محدودیت‏ها در برنامه‏ریزی‏های مدیریتی و توسعه، تعیین آسیب‏پذیری اکولوژیکی اکوسیستم‏ها است تا با شناسایی مناطق حساس و آسیب‏پذیر، از انجام پروژه‏های عمرانی و توسعۀ فراتر از حد‏ توان در این مناطق، جلوگیری کرد و آن‌ها را به سمت مناطق مقاوم و دارای آسیب‏پذیری کمتر هدایت کرد. موقعیت طبیعی مناسب شهرستان طرقبۀ شاندیز در استان خراسان رضوی، سبب شده است که این منطقه در سال‏های اخیر بستر انواع توسعه و ساخت‌‏و‏‌سازهایی مانند شهرک‏سازی و ویلا‏سازی که عمدتاً با هدف توسعۀ گردشگری صورت می‌گیرد، ‏شود. هدف از این پژوهش تعیین و طبقه‏بندی آسیب‏پذیری اکولوژیکی در این منطقه با استفاده از روش عینیت‏گراست. برای این منظور کل شهرستان به 94 شبکۀ 1600 هکتاری تقسیم شد و آسیب‏پذیری اکولوژیکی با استفاده از نقشه‏های شیب، جهت جغرافیایی، ارتفاع از سطح ‏دریا، عمق ‏خاک، تراکم پوشش‏ گیاهی، اقلیم و زمین‏شناسی، تعیین و طبقه‏بندی شد. نتایج به‏دست‌آمده نشان داد که در‌مجموع 21/19‌ درصد از مساحت شهرستان در طبقۀ آسیب‏پذیر، 35/53‌ ‌درصد در طبقۀ حساس، 14/18‌ درصد در طبقۀ نیمه‌حساس و 28/9‌ درصد از منطقه نیز در طبقۀ مقاوم قرار دارد.

کلیدواژه‌ها

عنوان مقاله [English]

Determination of ecological vulnerability in Torghabeh-Shandiz Township using objective vulnerability method

نویسندگان [English]

  • Sahar Heidari Masteali 1
  • Bahman Jabbarian Amiri 2
  • Afshin Alizade Shabani 2

1 MSc student, Department of Environment, Faculty of Natural Resource, University of Tehran

2 Assistant Professor, Department of Environment, Faculty of Natural Resources, University of Tehra

چکیده [English]

Recent experiences on disregarding the environment and continuous development have caused human to conclude that the only way to protect nature in long-term is to pay attention to environmental abilities and limitations. One of the most actions taken in this regard in management and development planning is to determine ecosystem vulnerabilities. In this way, by identifying vulnerable and sensitive areas, one will be able to prevent developments beyond the ecological abilities. Torghabeh-Shandiz Township is one of the regions in Razavi Khorasan province that was under constant developments such as buildings, establishing new residential complexes (apartments and villas) during the recent years, mostly for tourism. The objective of this study is to determine and to classify the ecological vulnerability in this area using the “objective method”. For this, the region was transformed into 94 cells, 1600 ha each, and the vulnerability and classification of each cell were calculated based on different environmental gradients such as: slope, aspect, elevation, soil depth, vegetation density, climate, and geology. The results show that 19.21% of the total area was vulnerable, 53.35% sensitive, 18.4 % susceptible, and 9.28% of it was classified in resistant category

کلیدواژه‌ها [English]

  • Development
  • vulnerability
  • objective vulnerability method
  • Torghabeh-Shandiz Township
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نشریه محیط زیست طبیعی
دوره 68، شماره 2 - شماره پیاپی 2
شهریور 1394
صفحه 213-223