气候变化领域集成服务门户(CCPortal): Reconstructed natural runoff helps to quantify the relationship between upstream water use and downstream water scarcity in China's river basins

CCPortal

DOI	10.5194/hess-23-2491-2019
	Reconstructed natural runoff helps to quantify the relationship between upstream water use and downstream water scarcity in China's river basins
	Zhou X.; Yang Y.; Sheng Z.; Zhang Y.
发表日期	2019
ISSN	1027-5606
起始页码	2491
结束页码	2505
卷号	23 期号:5
英文摘要	The increasing conflicts for water resources between upstream and downstream regions appeal to chronological insight across the world. While the negative consequence of downstream water scarcity has been widely analyzed, the quantification of influence of upstream water use on downstream water scarcity has received little attention. Here non-anthropologically intervened runoff (natural runoff) was first reconstructed in upstream, middle stream and downstream regions in China's 12 large basins in the 1970s to 2000s time period using the Fu-Budyko framework, and then compared to the observed data to obtain the developmental trajectories of water scarcity, including the ratio of water use to availability (WTA) and the per capita water availability (FI; Falkenmark Index) on a decadal scale. Furthermore, a contribution analysis was used to investigate the main drivers of water scarcity trajectories in those basins. The results show that China as a whole has experienced a rapid increase of WTA stress with surface water use rapidly increasing from 161 billion cubic meters (12 % of natural runoff) in the 1970s to 256 billion cubic meters (18 %) in the 2000s, with approximately 65 % increase occurring in northern China. In the 2000s, the increase of upstream WTA stress and the decrease of downstream WTA stress occurred simultaneously for semi-arid and arid basins, which was caused by the increasing upstream water use and the consequent decreasing surface water use in downstream regions. The influence of upstream surface water use on downstream water scarcity was less than 10 % in both WTA and FI for humid and semi-humid basins during the study period, but with an average of 26 % in WTA and 32 % in FI for semi-arid and arid basins. The ratio increased from 10 % in the 1970s to 37 % in the 2000s for WTA and from 22 % in the 1980s to 37 % in the 2000s for FI. The contribution analysis shows that the WTA contribution greatly increases in the 2000s mainly in humid and semi-humid basins, while it decreases mainly in semi-arid and arid basins. The trajectories of China's water scarcity are closely related to socioeconomic development and water policy changes, which provide valuable lessons and experiences for global water resources management. © 2019 Author(s).
语种	英语
scopus关键词	Runoff; Trajectories; Water management; Billion cubic meters; Contribution analysis; Downstream region; Global water resources; Northern China; Socio-economic development; Water availability; Water policies; Rivers; anthropogenic effect; resource management; river basin; runoff; surface water; water availability; water resource; water use; China
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159673
作者单位	Zhou, X., Key Laboratory of Agricultural Water Resources, Hebei Laboratory of Agricultural Water-Saving, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, China; Yang, Y., Key Laboratory of Agricultural Water Resources, Hebei Laboratory of Agricultural Water-Saving, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, China, University of Chinese Academy of Sciences, Beijing, 100049, China; Sheng, Z., Texas A and M AgriLife Research Center, El Paso, TX 79927, United States; Zhang, Y., Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
推荐引用方式 GB/T 7714	Zhou X.,Yang Y.,Sheng Z.,et al. Reconstructed natural runoff helps to quantify the relationship between upstream water use and downstream water scarcity in China's river basins[J],2019,23(5).
APA	Zhou X.,Yang Y.,Sheng Z.,&Zhang Y..(2019).Reconstructed natural runoff helps to quantify the relationship between upstream water use and downstream water scarcity in China's river basins.Hydrology and Earth System Sciences,23(5).
MLA	Zhou X.,et al."Reconstructed natural runoff helps to quantify the relationship between upstream water use and downstream water scarcity in China's river basins".Hydrology and Earth System Sciences 23.5(2019).