کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
974587 1480154 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Is there enough fertile soil to feed a planet of growing cities?
ترجمه فارسی عنوان
آیا زمین بارور کافی برای تغذیه یک سیاره از شهرهای رو به رشد وجود دارد؟
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
چکیده انگلیسی

We analyze a scaling law for the consumption of agricultural soil by cities. The nonlinear dependence of the size of the city on the number of inhabitants gives rise to an equation for population dynamics. We found the asymptotic limit of the solution for this equation, given by the carrying capacity in terms of number of inhabitants that can be fed. The carrying capacity as a function of the scaling law exponent is computed numerically, showing that the exponent must be very small to ensure a food sustainability. We suggest a bound for the value of this exponent and analyze the reliability of the scaling law for major cities.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 419, 1 February 2015, Pages 668–674
نویسندگان
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