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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.
	2015
关键词	blue 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
英文摘要	Human 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.
出处	Journal of Water and Climate Change
卷	6
期	4
页	800-815
语种	英语
ISSN号	2040-2244
DOI标识	10.2166/wcc.2015.194
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/43502]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 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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