Review of water footprint components of grain

International Technical Postgraduate Conference

Wan Ahmad, Wan Amiza Amneera^1 ; Sulaiman, Nik Meriam Nik^1 ; Mahmood, Noor Zalina^2

Department of Chemical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur

50603, Malaysia^1

Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur

50603, Malaysia^2

关键词: Climate patterns;    Economic development;    Global population;    Green water;    Low and middle income countries;    Water footprint;    Water scarcity;    White water;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/210/1/012010/pdf
DOI  :  10.1088/1757-899X/210/1/012010

来源: IOP

【 摘 要 】

Burgeoning global population, economic development, agriculture and prevailing climate pattern are among aspects contributed to water scarcity. In low and middle income countries, agriculture takes the highest share among water user sector. Demand for grain is widespread all over the globe. Hence, this study review published papers regarding quantification of water footprint of grain. Review shows there are various methods in quantifying water footprint. In ascertaining water footprint, three (green, blue, grey) or two (green, blue) components of water footprint involved. However, there was a study introduced new term in evaluating water footprint, white water footprint. The vulnerability of varying methods is difficulty in conducting comparative among water footprint. Salient source in contributing high water footprint also varies. In some studies, green water footprint play major role. Conversely, few studies found out blue water footprint most contributing component in water footprint. This fluctuate pattern influenced by various aspects, namely, regional climatic characteristics, crop yield and crop types.