QIAN Jianping, ZHAO Jianping, GUI Dongwei, et al. Effects of Ecological Water Use and Irrigation on Groundwater Depth in Cele Oasis[J]. Bulletin of Soiland Water Conservation, 2018, 38(1): 96-102.
DOI:
QIAN Jianping, ZHAO Jianping, GUI Dongwei, et al. Effects of Ecological Water Use and Irrigation on Groundwater Depth in Cele Oasis[J]. Bulletin of Soiland Water Conservation, 2018, 38(1): 96-102. DOI: 10.13961/j.cnki.stbctb.2018.01.016.
Effects of Ecological Water Use and Irrigation on Groundwater Depth in Cele Oasis
[Objective] Estimating the dynamic changes of groundwater resource changes and identifying possible safety measures
we aim to provide decision basis of managing available water resources and maintaining the ecological security of oasis.[Methods] Firstly
the total water demand of Cele Oasis was analyzed
and then the deficiency of water in oasis was calculated according to monitoring data on river and groundwater dynamics. Finally
the dynamic changes in groundwater level were analyzed using long-term monitoring data of groundwater.[Results] Results revealed that when considering the ecological water use
the average annual water gap in the Cele Oasis was 5.20×106~1.15×107 m3. On average
the annual decline in groundwater depth was varying from 0.27 m to 0.60 m due to continuous use of groundwater in Cele Oasis. During high flow years
the groundwater recharge was relatively abundant that did not make any obvious change in average depth of groundwater level except in its spatial distribution. During 2008-2014
the groundwater average depth showed more substantial fluctuations
but it basically maintained at the level of 21 m depth.[Conclusion] The change in groundwater depth in Cele Oasis is within safe range. But
in order to ensure healthy and sustainable development of the oasis
and to maintain the stability of groundwater depth
the current financial resources should be invested in water resources supervision and management. Besides
the construction of agricultural water-saving facilities should be viewed as a long-term development strategy.
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