Resource Evaluation

Impacts of Water Transfer from the Yellow River on Water Environment in the Receiving Area of the Fenhe River

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  • 1. School of Environment and Resource, Shanxi University, Taiyuan 030006, China;
    2. Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang 330022, China;
    3. Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, CAS, Shijiazhuang 050021, China

Received date: 2017-07-11

  Revised date: 2018-01-03

  Online published: 2018-08-20

Supported by

National Natural Science Foundation of China, No. 41301033

Abstract

The project of water transfer from the Yellow River to the Fenhe River launched in 2003 relieved water shortage in Taiyuan. However, the impacts of the polluted Yellow River on the water environment of upper reach area of the Fenhe River were seldom reported. Based on long term observations and samplings, physicochemical properties, major ions, the typical pollutant DBP and Escherichia coli in the receiving river were measured. Results show water transfer imposed great impacts on hydrologic processes and water environment of river and groundwater in the receiving area. The hydrological process of high stage in rainy seasons and low stage in dry seasons was inversed by the Yellow River water transfer project. High water stage in dry seasons was due to huge amount of water transfer, and low stage in rainy seasons was owing to the temporary stop of the water transfer. At the same time, the accelerated velocity of the receiving river increased the river bottom erosion, which could enhance the exchange between the river and the shallow groundwater in the riparian zone. The river water recharged groundwater in saturated condition during the whole hydrologic year, and the water table depth of shallow groundwater was significantly decreased. The risk of flooding might greatly increase. Water environmental degradation was also triggered by the water transfer. The dissolved salts and organic contaminant contents in the receiving river and the shallow groundwater increased. EC value of the Fenhe River was doubled with the geochemical face of the river water changed from Ca-HCO3 to Na-Cl·SO4 by the water transfer. Also, DOC and UV254 of the river water were increased by 26% and 24%, respectively. When water transfer stopped periodically, the hydro-chemical features of the receiving river recovered. However, the obvious impacts of water transfer on the shallow groundwater in the riparian zone remained. In the long term, excessive Na+ and Cl- imported by the water transfer would make the environment of the receiving area worse, and the elevated evaporation rate of soil moisture and the shallow water table depth would lead to the occurrence of soil salting and vegetation degradation.

Cite this article

YUAN Rui-qiang, ZHANG Wen-xin, WANG Peng, WANG Shi-qin . Impacts of Water Transfer from the Yellow River on Water Environment in the Receiving Area of the Fenhe River[J]. JOURNAL OF NATURAL RESOURCES, 2018 , 33(8) : 1416 -1426 . DOI: 10.31497/zrzyxb.20170691

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