Journal article

Emergy evaluation of a pumping irrigation water production system in China

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

FRONTIERS OF EARTH SCIENCE | SPRINGER | Published : 2014

Abstract

The emergy concept was used to evaluate a pumping irrigation water production system in China. A framework for emergy evaluation of the significance of irrigation water and its production process was developed. The results show that the irrigation water saved has the highest emergy value (8.73E + 05 sej·J-1), followed by the irrigation water supplied to farmlands (1.72E + 05 sej·J-1), the pumped water (4.81E + 04 sej·J-1), with the lowest value shown from water taken from the local river (3.72E + 04 sej·J-1). The major contributions to the emergy needed for production are the inputs of soil and water. This production system could contribute to the irrigated agriculture and economy, according..

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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 Discovery grant


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).