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Quantification of regional and global sustainability based on combined resource criticality of land and water

机译:基于陆地和水的组合资源关键性的区域和全球可持续性的量化

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摘要

The overall global food sustainability is limited by the simultaneous availability of primary resources at regional scales, although the international trade network can redistribute available (surplus) food. Assessments based on isolated resource (like water) or demand (like food) cannot provide correct estimates of sustainability. We define a novel criticality index on the basis of simultaneous regional availability of arable land and water to quantify sustainability. Analyses at regional and global scale show that while a relatively small fraction of world population is subcritical in terms of food availability, much larger fractions are becoming subcritical in terms of food production. The combined resource criticality implies stronger constraints for sustainability.
机译:虽然国际贸易网络可以重新分配(剩余)食物,但全球全球粮食可持续性受到区域尺度的同时可用性的限制。 基于隔离资源(如水)或需求(如食物)的评估不能提供可持续性的正确估计。 我们根据耕地和水的同时区域可用性来定义新颖的关键性指数,以量化可持续性。 区域和全球范围内的分析表明,虽然在食品可用性方面具有相对较少的世界人口是亚临界的,但在食品生产方面,大量较大的分数正在成为亚临界。 合并的资源关键性意味着对可持续性的强大限制。

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