干旱区生态环境知识资源中心(Arid): Decrease of both river flow and quality aggravates water crisis in North China: a typical example of the upper Yongding River watershed

Arid

DOI	10.1007/s10661-020-08371-6
	Decrease of both river flow and quality aggravates water crisis in North China: a typical example of the upper Yongding River watershed
	Dai, Dan 1,2; Xu, Xiangqin 2; Sun, Mingdong 2; Hao, Chenlin 2; Lv, Xubo 2; Lei, Kun 2
通讯作者	Lei, Kun
来源期刊	ENVIRONMENTAL MONITORING AND ASSESSMENT
ISSN	0167-6369
EISSN	1573-2959
出版年	2020
卷号	192 期号:7
英文摘要	Due to unevenly distributed water resources, semi-arid regions are particularly prone to severe water shortage and quality degradation. In this study, based on long-term hydrological database (1935-2015), and the latest available water quality data sets (2011-2016), we analyzed the water crisis and its driving forces in the upper Yongding River watershed, a typical water shortage area in North China. The results showed that human induced excessive water consumption is responsible for the significantly decreased river flow over the past eight decades. Although the capacity of the watershed wastewater treatment has improved, current water quality does not meet the requirements of the national water management goals, because of the excessive nitrogen and CODCr (chemical oxygen demand), which mainly come from the wastewater and feedlots discharge. Due to the decreased river flow, current Yongding River is unable to dilute and assimilate pollutions. The analysis of river pollutant load illustrated that more than 60 % of the nitrogen in the river water system is diverted for reservoir storage, and more than 50 % of the CODCr and TP are diverted for irrigation, thereby, increasing the risk of reservoirs eutrophication and threatening food safety. Besides, the high Cl- (388.2 +/- 322.5 mg/L) and SO42- (470.6 +/- 357.7 mg/L) imply that the upper river water are not suitable for drinking and irrigation purposes, and a potential risk of salinization if the river flow continues to decrease. We conclude that water resources over extraction and quality degradation are the main driving factors of the Yongding River water crisis.
英文关键词	Water crisis River flow Water quality Pollutant loads Yongding River
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000539027500001
WOS关键词	TEMPORAL VARIATIONS ; FRESH-WATER ; LAND-USE ; RESOURCES ; PHOSPHORUS ; CHEMISTRY ; NUTRIENTS ; SALINITY ; NITROGEN ; STRESS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319304
作者单位	1.Beijing Normal Univ, Coll Water Sci, Beijing 100875, Peoples R China; 2.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Dai, Dan,Xu, Xiangqin,Sun, Mingdong,et al. Decrease of both river flow and quality aggravates water crisis in North China: a typical example of the upper Yongding River watershed[J]. 北京师范大学,2020,192(7).
APA	Dai, Dan,Xu, Xiangqin,Sun, Mingdong,Hao, Chenlin,Lv, Xubo,&Lei, Kun.(2020).Decrease of both river flow and quality aggravates water crisis in North China: a typical example of the upper Yongding River watershed.ENVIRONMENTAL MONITORING AND ASSESSMENT,192(7).
MLA	Dai, Dan,et al."Decrease of both river flow and quality aggravates water crisis in North China: a typical example of the upper Yongding River watershed".ENVIRONMENTAL MONITORING AND ASSESSMENT 192.7(2020).