气候变化领域集成服务门户(CCPortal): Water saving potentials and possible trade-offs for future food and energy supply

CCPortal

DOI	10.1016/j.gloenvcha.2016.03.014
	Water saving potentials and possible trade-offs for future food and energy supply
	Damerau K.; Patt A.G.; van Vliet O.P.R.
发表日期	2016
ISSN	0959-3780
卷号	39
英文摘要	The sufficient supply of food and energy requires large amounts of fresh water. Mainly required for irrigation, but also processing and cooling purposes, water is one of the essential resources in both sectors. Rising global population numbers and economic development could likely cause an increase in natural resource demand over the coming decades, while at the same time climate change might lead to lower overall water availability. The result could be an increased competition for water resources mainly in water-stressed regions of the world in the future. In this study we explore a set of possible changes in consumption patterns in the agricultural and energy sector that could be primarily motivated by other goals than water conservation measures-for example personal health and climate change mitigation targets, and estimate the indirect effect such trends would have on global water requirements until 2050. Looking at five world regions, we investigated three possible changes regarding future food preferences, and two possible changes in future resource preferences for electricity and transport fuels. We find that while an increase in food supply as a result of higher protein demand would lead to an increase in water demand as well, this trend could be counteracted by other potential dietary shifts such as a reduction in grains and sugars. In the energy sector we find that an increasing water demand can be limited through specific resource and technology choices, while a significant growth of first-generation biofuels would lead to a drastic rise in water demand, potentially exceeding the water requirements for food supply. Looking at the two sectors together, we conclude that an overall increase in water demand for both food and energy is not inevitable and that changes in food and energy preferences could indeed lead to an alleviation of water resource use despite rising population numbers. © 2016 Elsevier Ltd.
英文关键词	Biofuels; Natural resource management; Water-energy-food nexus
学科领域	biofuel; electricity supply; food supply; global perspective; resource management; resource use; trade-off; water availability; water demand; water management; water resource
语种	英语
scopus关键词	biofuel; electricity supply; food supply; global perspective; resource management; resource use; trade-off; water availability; water demand; water management; water resource
来源期刊	Global Environmental Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/117369
作者单位	Department of Environmental Systems Science, Swiss Federal Institute of Technology Zurich (ETHZ), Universitätstrasse 22, CHN J72.1, Zurich, 8092, Switzerland; International Institute for Applied Systems Analysis (IIASA), Schlossplatz 1, Laxenburg, 2361, Austria
推荐引用方式 GB/T 7714	Damerau K.,Patt A.G.,van Vliet O.P.R.. Water saving potentials and possible trade-offs for future food and energy supply[J],2016,39.
APA	Damerau K.,Patt A.G.,&van Vliet O.P.R..(2016).Water saving potentials and possible trade-offs for future food and energy supply.Global Environmental Change,39.
MLA	Damerau K.,et al."Water saving potentials and possible trade-offs for future food and energy supply".Global Environmental Change 39(2016).