A Worldwide Comparison of Water Use Efficiency of Crop Production

Zhao Dan Wu; Upmanu Lall; Min Zhao

doi:10.4028/www.scientific.net/AMM.275-277.2718

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 275-277A Worldwide Comparison of Water Use Efficiency of...

A Worldwide Comparison of Water Use Efficiency of Crop Production

Abstract:

Worldwide food security and water safety issues necessitate countries with low water use efficiency of crop production (CWUE) to increase it and reduce regional CWUE variations. CWUE function was estimated with stochastic frontier analysis, and CWUE variation was decomposed on inter-continental, intra-continental and international level with variance decomposition method. It is proposed that in order to efficiently improve the CWUE and reduce regional CWUE variation, countries with low CWUE should focus more on the factors listed from the decomposition. Scenario analysis proved the effect of improving the most important factor of CWUE variation, and showed some new key factors in the future after we realize the improvement as mentioned in the scenarios. Lastly we put forward some specific suggestions on the way to improve the CWUE.

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Periodical:

Applied Mechanics and Materials (Volumes 275-277)

Pages:

2718-2722

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.275-277.2718

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Online since:

January 2013

Authors:

Zhao Dan Wu*, Upmanu Lall, Min Zhao

Keywords:

Cobb-Douglas Production Function, Stochastic Frontier Analysis, Variance Decomposition, Water Use Efficiency of Crop Production

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