globalchange  > 气候变化事实与影响
DOI: 10.5194/hess-18-213-2014
Scopus记录号: 2-s2.0-84892712273
论文题名:
Water footprints of cities - Indicators for sustainable consumption and production
作者: Hoff H; , Döll P; , Fader M; , Gerten D; , Hauser S; , Siebert S
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2014
卷: 18, 期:1
起始页码: 213
结束页码: 226
语种: 英语
Scopus关键词: Costs and benefits ; Crop water productivity ; Domestic water use ; Export production ; Spatial resolution ; Sustainability indicators ; Sustainable consumption ; Virtual water-flow ; Commerce ; Crops ; cost-benefit analysis ; environmental economics ; export ; import ; sustainability ; trade-environment relations ; water flow ; water footprint ; water resource ; water use ; Berlin ; Delhi ; Germany ; India ; Lagos [Nigeria] ; Nigeria
英文摘要: Water footprints have been proposed as sustainability indicators, relating the consumption of goods like food to the amount of water necessary for their production and the impacts of that water use in the source regions. We further developed the existing water footprint methodology, by globally resolving virtual water flows from production to consumption regions for major food crops at 5 arcmin spatial resolution. We distinguished domestic and international flows, and assessed local impacts of export production. Applying this method to three exemplary cities, Berlin, Delhi and Lagos, we find major differences in amounts, composition, and origin of green and blue virtual water imports, due to differences in diets, trade integration and crop water productivities in the source regions. While almost all of Delhi's and Lagos' virtual water imports are of domestic origin, Berlin on average imports from more than 4000 km distance, in particular soy (livestock feed), coffee and cocoa. While 42% of Delhi's virtual water imports are blue water based, the fractions for Berlin and Lagos are 2 and 0.5%, respectively, roughly equal to the water volumes abstracted in these two cities for domestic water use. Some of the external source regions of Berlin's virtual water imports appear to be critically water scarce and/or food insecure. However, for deriving recommendations on sustainable consumption and trade, further analysis of context-specific costs and benefits associated with export production will be required. © 2014 Author(s). CC Attribution 3.0 License.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78350
Appears in Collections:气候变化事实与影响

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作者单位: Potsdam Institute for Climate Impact Research, Telegrafenberg, 14473 Potsdam, Germany; Stockholm Environment Institute, Linnégatan 87D, 10451 Stockholm, Sweden; Institute of Physical Geography, Goethe University Frankfurt, Altenhöferallee 1, 60438 Frankfurt, Germany; International Institute of Tropical Agriculture, Ibadan, PMB 5320, Oyo State, Nigeria; Institute of Crop Science and Resource Conservation, University of Bonn, Katzenburgweg 5, 53115 Bonn, Germany; Institut Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale, Aix-Marseille Université, Univ. Avignon, Technopôle Arbois-Méditerranée, Bât. Villemin andndash; BP 80, 13545 Aix-en-Provence cedex 04, France

Recommended Citation:
Hoff H,, Döll P,, Fader M,et al. Water footprints of cities - Indicators for sustainable consumption and production[J]. Hydrology and Earth System Sciences,2014-01-01,18(1)
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