Quantitative modeling of interconnections associated with sustainable food, energy and water (FEW) systems
Quantitative modeling of interconnections associated with sustainable food, energy and water (FEW) systems
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DOI：
10.1016/j.jclepro.2018.07.275
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发表时间：
2018-11-01
影响因子：
11.1
通讯作者：
Asadi, Somayeh
中科院分区：
文献类型：
--
作者：
Karan, Ebrahim;Asadi, Somayeh
能源和水的成本不断增加，化石燃料枯竭以及气候变化造成的粮食短缺对粮食，能源和水（FEW）系统的长期可持续性提出了挑战。在努力实现可持续发展的过程中，决定是否以及如何投资于FEW系统的一个基本问题是“FEW系统的可持续性如何？".为了衡量FEW系统的可持续性，开发了一个综合可持续性指数（SI）。SI由三个部分组成：食物、能量和水。这些组成部分各自由不同的子组成部分（例如，能源部分的运输燃料）组成，这些子组成部分构成了集成的FEW系统。FEW系统的可持续性可以使用综合FEW SI计算，但更发人深省的问题是了解每个子组件如何影响系统的整体可持续性。如果不制定与FEW组件相关的互连，就无法实现这一点。这项研究制定了与少数组件相关的互连。为了提高结果推广到不同规模的FEW系统的程度，研究的计算是针对一个可持续的FEW系统进行的，该系统可以持续为四口之家（两个成年人和两个孩子）提供食物，并从可持续来源供应自己的水和能源需求。此外，位于两个不同的气候条件下的两个系统的可持续性进行了测量;一个是相对多云和潮湿，另一个是阳光充足和干旱。结果表明，最高的可持续性改善在这两种气候与灌溉子组件。可持续的灌溉用水供应不仅提高了水的可持续性，还提高了粮食的可持续性，从而提高了能源的可持续性。这一发现可以通过以下事实来解释：灌溉子组件是谷物子组件的资源供应商，并且是运输燃料子组件的资源供应商。(C)2018爱思唯尔有限公司版权所有
The increasing costs of energy and water, fossil fuel depletion, and food shortages caused by climate change challenge long-term sustainability of food, energy, and water (FEW) systems. In working toward sustainable development, a fundamental question for deciding on whether and how to invest in FEW systems is "how sustainable FEW systems are?". In order to measure sustainability across the FEW systems, an integrated sustainability index (SI) is developed. The SI is comprised of three components; food, energy, and water. These components each consist of different sub-components (e.g. transportation fuel for energy component) that make up integrated FEW systems. The sustainability of an FEW system can be calculated using the integrated FEW SI, but a more thought provoking question is to understand how each sub-component affects overall sustainability of the system. This cannot be achieved without formulating the interconnections associated with FEW components. This study formulates interconnections associated with FEW components. In an effort to increase the degree to which the results would generalize to FEW systems with different scales, the calculations of the study are performed for a sustainable FEW system that can consistently yield food for a family of four (two adults and two children) and supply its own water and energy needs from sustainable sources. Also, the sustainability is measured for two systems located in two different climates; one is relatively cloudy and humid and the other is sunny and arid. The results show that the highest sustainability improvement in both climates is associated with irrigation sub-component. Not only a sustainable water supply for irrigation sub-component improves the sustainability of water component, it also improves food sustainability and consequently energy sustainability. This finding can be explained by the fact that the irrigation sub-component is a resource supplier for grain sub-component, and that is a resource supplier for transportation fuel sub-component. (C) 2018 Elsevier Ltd. All rights reserved.