新疆塔里木河下游断流河道输水对地下水变化的影响分析

结合2000～2002年以来塔里木河下游间歇性输水后地下水变化的监测数据．用回归分析的方法对输水后地下水位动态响应变化过程进行分析，揭示输水量与地下水的响应范围之间的关系。结果表明：在横向上．随着向塔河生态输水次数和输水量的增加．地下水的响应范围逐渐扩大．但随远离输水河槽中轴线，响应程度减小．地下水位的抬升幅度减弱；纵向上，输水河段上游区段地下水位响应范围最大，中游区段次之，下游区段较小。在第二次输水过程中，靠近河岸地下水位出现急剧上升，而在第三次输水过程中，地下水的响应范围则有巨幅增加．输水量与输水持续时间与地下水位变化有着密切关系。

Anlysis on the Influence of the Stream Water Transporting on the Ground Water Level in the Lower Reaches of Tarim River, Xinjiang

In this paper,the dynamic response of groundwater level in the lower reaches of Tarim River to the stream water transporting is analyzed by using regressive analysis based on the monitoring data of the groundwater level change after the intermittent stream water transfusion to the dried-up river section in the lower reaches of Tarim River during the period from 2000 to 2002,and the relationship between the stream water transporting and the response of groundwater is revealed. The results show that the response extent of groundwater is gradually enlarged with the increase of the times and volumes of the stream water transportingto the lower reaches of Tarim River for the ecology,however,the response degree and the risen amplitude of groundwater level are reduced along with the increase of the distance away from the river channel;longitudinally,the response scope of groundwater is the largest in the upper reaches,then in the middle reaches,and it is the smallest in the lower reaches of Tarim River. During the second time of the stream water transporting,the groundwater level near the river channel was risen sharply,the response scope of groundwater was enlarged in a great amplitude during the second time of the stream water transporting,and the change of groundwater level is closely related to the times and volumes of the stream water transporting.