Abstract: In this study, the dynamic change of groundwater level before, after and during the 12th ecological water conveyance to the lower reaches of the Tarim River in Xinjiang, China was researched, the temporal and spatial change of groundwater level was analyzed, and the relationship between groundwater level change and distance of monitoring wells away from the river channel was lucubrated. The results show that the raise extent of groundwater level was increased upstream and with the decrease of distance away from the ricer channel, and it was affected by that whether the place was flooded by conveyed water and by conveyed water volume. The analyzed result of the relationship between conveyed water volume and raise extent of groundwater level is of significance for understanding the recent effect of ecological water conveyance on groundwater level raise in the lower reaches of the Tarim River. It is considered that the long-term and stable ecological water conveyance is very important for the growth of natural vegetation and the ecological regeneration in the lower reaches of the Tarim River.

Key words: groundwater level, ecological water conveyance, comprehensive treatment, Tarim River