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Influence of human activities and climate variability on green and blue water provision in the Heihe River Basin, NW China
Zang C. F.; Liu, J. G.; Gerten, D.; Jiang, L. G.
Source PublicationJournal of Water and Climate Change
2015
Volume6
Issue4
Pages800-815
Keywordblue water green water green water coefficient Heihe River Basin land use change scenario analysis northwest china fresh-water resources impacts challenges management runoff flows area tool
AbstractHuman activities and climate simultaneously affect water cycling and provision. Here, we study the impacts of climate variability and human activities on green and blue water provision (or the flows of both green water and blue water) in the inland Heihe River Basin as simulated by the Soil and Water Assessment Tool (SWAT). The results show that total green and blue water flow varied significantly from 1980 to 2010. Direct human activities did not significantly change the sum of green and blue water flow volumes. However, land use change led to a transformation of 206 million m(3)/year in the entire river basin from green to blue water flow, while farmland irrigation expansion resulted in a transformation of 66 million m(3) from blue to green water flow. The synchronous climate variability, with an upward precipitation trend, caused an increase of green water flow by 469 million m(3)/year and an increase of blue water flow by 146 million m(3)/year at the river basin level over the study period. The results provide a general approach to investigate the impacts of historical human activities and climate variability on water provision at the river basin level.
Indexed BySCI
Language英语
ISSN2040-2244
DOI10.2166/wcc.2015.194
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document TypeSCI/SSCI论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43502
Collection历年回溯文献
Recommended Citation
GB/T 7714
Zang C. F.,Liu, J. G.,Gerten, D.,et al. Influence of human activities and climate variability on green and blue water provision in the Heihe River Basin, NW China. 2015.
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