Journal article

Emergy evaluation of the contribution of irrigation water, and its utilization, in three agricultural systems in China

Dan Chen, Zhaohui Luo, Michael Webber, Jing Chen, Weiguang Wang

FRONTIERS OF EARTH SCIENCE | SPRINGER | Published : 2014

Abstract

Emergy theory and method are used to evaluate the contribution of irrigation water, and the process of its utilization, in three agricultural systems. The agricultural systems evaluated in this study were rice, wheat, and oilseed rape productions in an irrigation pumping district of China. A corresponding framework for emergy evaluation and sensitivity analysis methods was proposed. Two new indices, the fraction of irrigation water (FIW), and the irrigation intensity of agriculture (IIA), were developed to depict the contribution of irrigation water. The calculated FIW indicated that irrigation water used for the rice production system (34.7%) contributed more than irrigation water used for ..

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Grants

Awarded by National Natural Science Foundation of China


Awarded by Specialized Research Fund for the Doctoral Program of Higher Education


Awarded by Natural Science Foundation of Jiangsu province


Awarded by Australian Research Council


Funding Acknowledgements

This study was supported by the National Natural Science Foundation of China (Grant Nos. 51109056 and 51109108), the Specialized Research Fund for the Doctoral Program of Higher Education (No. 20110097120002), the Natural Science Foundation of Jiangsu province (No. BK2011654), Australian Research Council Discovery Grant (No. DP110103381) and a Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).