کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10503838 | 946333 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Towards a revised planetary boundary for consumptive freshwater use: role of environmental flow requirements
ترجمه فارسی عنوان
به سوی مرز سیاره تجدید نظر شده برای استفاده از آب شیرین مصرفی: نقش نیازهای محیط زیست
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم زمین و سیاره ای (عمومی)
چکیده انگلیسی
We review the conceptual and quantitative foundation of the recently suggested 'planetary boundary' for freshwater (PB-Water; i.e. tolerable human 'blue' water consumption), and propose ways forward to refine and reassess it. As a key element of such a revision we suggest a bottom-up quantification of local water availabilities taking account of environmental flow requirements. An analysis that respects these requirements in a spatially explicit manner suggests a PB-Water of â¼2800Â km3Â yrâ1 (the average of an uncertainty range of 1100-4500Â km3Â yrâ1). This is notably lower than the earlier suggestion based on a simpler top-down analysis (4000Â km3Â yrâ1, the lower value of a range of 4000-6000Â km3Â yrâ1). The new estimate remains provisional, pending further refinement by in-depth analyses of local water accessibility and constraints up-scaled to the global domain, including study of cascading impacts on Earth system properties. With a current blue water consumption of >1700Â km3Â yrâ1, PB-Water is being approached rapidly. Thus, design opportunities to remain within PB-Water are imperative. We argue that their quantification requires analysis of tradeoffs with other planetary boundaries such as those for land use and climate change.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Opinion in Environmental Sustainability - Volume 5, Issue 6, December 2013, Pages 551-558
Journal: Current Opinion in Environmental Sustainability - Volume 5, Issue 6, December 2013, Pages 551-558
نویسندگان
Dieter Gerten, Holger Hoff, Johan Rockström, Jonas Jägermeyr, Matti Kummu, Amandine V Pastor,