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11 - Agricultural Water Use Estimation and Impact Assessment on the Water System in China

from Part II - Climate Risk to Human and Natural Systems

Published online by Cambridge University Press:  17 March 2022

Qiuhong Tang
Affiliation:
Chinese Academy of Sciences, Beijing
Guoyong Leng
Affiliation:
Oxford University Centre for the Environment
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Summary

Agricultural green and blue water uses in China are accounted for based on the H08 hydrological model. The results indicate that green and blue water uses play various roles in different regions of China. Two different time series trends and their associated drivers are highlighted for the period 1981–2010. Phase advance is found in the annual cycle of blue water use in comparison with green water use. An impact assessment shows that blue water use has a considerable impact on the water system, accounting for more than three quarters of renewable water resources in China. In addition, a large amount of non-renewable water is used in northern China.

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Publisher: Cambridge University Press
Print publication year: 2022

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