سنجش کارایی و بهره‏ وری مصرف آب تهران با استفاده از روش تحلیل پوششی داده ‏ها

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار، گروه مهندسی محیط زیست، دانشگاه محیط زیست، ایران

2 دانشجوی کارشناسی ارشد، مهندسی عمران‌ـ محیط زیست، دانشگاه محیط زیست، ایران

3 استاد، گروه محیط زیست، دانشگاه تهران، ایران

چکیده

در این پژوهش با استفاده از تکنیک‏های ورودی تحلیل پوششی داده‏ها، شاخص‏های کارایی و بهره‏وری مصرف آب تهران برای دورۀ زمانی 1384ـ 1392 ارزیابی شد. همچنین همبستگی بین مصرف آب و فعالیت‏های اقتصادی منطقه با استفاده از شاخص تولید ناخالص داخلی منطقه‏ای بررسی شد. نتایج نشان می‏دهد که بهره‏وری کل از نظر تغییر کارایی فنی و تغییر کارایی مقیاس، به‌ترتیب 80/1 و 68/1 درصد بهبود یافته است. علاوه بر آن، به‌علت اجرای طرح‏های کلان، جمع‌آوری و تصفیۀ فاضلاب و همچنین به‌کار بردن راهکارهای مدیریت مصرف آب برای افزایش ذخیرۀ سالانۀ آب به‌ویژه از سال 1390 به بعد، بهره‏وری کل از نظر تغییر فناوری، 32/12 درصد بهبود یافته است. این شاخص‏ها تأیید می‏کند که بدون کاهش در میزان تولیدات و خدمات عمدۀ مربوط به تهران، امکان کاهش مصرف آب تا 22 میلیون متر‌ مکعب در این شهر میسر است.

کلیدواژه‌ها


عنوان مقاله [English]

Measuring Water Use Efficiency and Productivity of Tehran using Data Envelopment Analysis

نویسندگان [English]

  • Hamid Sarkheil 1
  • Mahyar Habibi Rad 2
  • Nemat Allah Khorasani 3
1 Faculty member/University of Environment
2 University of Environmnet
3 Professor of Tehran University
چکیده [English]

The input-oriented Data Envelopment Analysis was used to measure the water use efficiency and productivity indices of Tehran over the period 2005-13. Meanwhile, the correlation between water uses and regional economic activities was examined using the gross regional domestic product index. The results indicated that the total productivity was improved 1.8% and 1.68% aspect of technical efficiency change and scale efficiency change respectively. Furthermore, it was improved 12.32% aspect of technology change due to accumulation and treatment of waste water and applying water use management to increase annual water storage since 2011. The mentioned indices confirmed that a 22 million cubic meters decrease is possible in water uses without decreasing in the level of gross products related to Tehran.

کلیدواژه‌ها [English]

  • Water use efficiency
  • Data Envelopment Analysis
  • Efficiency
  • productivity
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