Mon, 20 Nov 2017 09:50:30 GMT

ONLINE SUBMISSION
USER:
PASSWORD:
         
GUIDE FOR AUTHORS
Forgot your password?
Enter your e-mail to receive an e-mail with your account information.
CONTENTS
Current Issues
ALL Issues
Subscription
Online First
Journal Citation
ABOUT JCUG
Committee
Journal Honor
JCUG
Contact us

Chemical and Isotopic Response to Intensive Groundwater Abstraction and Its Implications on Aquifer Sustainability in Shijiazhuang, China

Zhongshuang Cheng; Yongbo Zhang; Chen Su; Zongyu Chen
Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China

The stress imposed on groundwater resources due to intensively exploited aquifer has resulted in groundwater depletion in the North China Plain (NCP). Management of groundwater resources needs to understand the changes or dynamic responses due to the exploitation. The response of groundwater systems to intensive exploitation and groundwater availability were assessed by the combined use of conventional hydrochemical data and environmental isotopes in Shijiazhuang, NCP. The generally increased concentration of TDS, major cation and anion of groundwater in the past 40 years indicated high vulnerability of aquifer system but a short turn over time by intensive groundwater exploitation, which also was proved by changes of groundwater renewal rate estimated by tritium. The vertical distribution of tritium in aquifers showed that the active groundwater recharge zone has been extended from the depth of 100 m to ~150 m since 1985, indicating an enhancement of active groundwater flushing of local groundwater system due to intensive groundwater abstraction. The enrichment trend of δ18O and δ2H value with groundwater abstraction, suggested the impacts of local recharge from irrigation return. The increase concentrations of nitrate with time indicated high aquifer vulnerability. A comprehensive effort should be developed for effective management strategies that ensure long-term, stable, and flexible water supplies to meet water demands in the NCP.

Keywords:Isotope; Renewal rate; North China Plain; Groundwater

DOI:
10.1007/s12583-016-0950-x
CLC number:
U469.72
Download Full Text:
Click Here
Downloaded:
171