Journal of Geographical Sciences ›› 2005, Vol. 15 ›› Issue (1): 13-19.doi: 10.1360/gs050102

• Climate and Environmental Change • Previous Articles     Next Articles

Dynamical variations in groundwater chemistry influenced by intermittent water delivery at the lower reaches of the Tarim River

CHEN Yongjin1,2, CHEN Yaning1, LIU Jiazhen1,2, LI Weihong1, LI Jun1,2, XU Changchun1,2   

  1. 1. Xinjiang Institute of Ecology and Geography, CAS, Urumqi 830011, China;

    2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2004-08-20 Revised:2004-11-29 Online:2005-03-25 Published:2005-03-25
  • Supported by:

    National Natural Science Foundation of China, No.90102007; Knowledge Innovation Project of Chinese Academy of Sciences, No.KZCX1-08-03

Abstract:

The water of Bosten Lake was released to lower reaches of the Tarim River for 5 times from 2000 to 2002. The changes of total dissolved solid (TDS) and the major ions (SO2-4, Cl-, Na+, Ca2+, Mg2+ and HCO-3) were analyzed during this period. It was found out that TDS and the concentrations of the major ions initially and quickly increased and then decreased, but finally increased again. These changes were different at different distances from the river, which indicated that the groundwater changes relied on the distance from the river. In addition, the salt in groundwater was only diluted but not removed by the water. It was suggested that ecological measures should be sought to really promote the quality of the groundwater at the lower reaches of the Tarim River.

Key words: water delivery, groundwater chemistry, hydro-salinity movement, the Tarim River