Surfacewater-groundwater interaction in the Heihe River basin, Northwestern China
Surfacewater-groundwater interaction in the Heihe River basin, Northwestern China
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DOI：
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发表时间：
2007
影响因子：
1
通讯作者：
T. Akiyama;A. Sakai;Y. Yamazaki;Genxu Wang;K. Fujita;M. Nakawo;Jurhpei Kubota;Y. Konagaya
中科院分区：
文献类型：
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作者：
T. Akiyama;A. Sakai;Y. Yamazaki;Genxu Wang;K. Fujita;M. Nakawo;Jurhpei Kubota;Y. Konagaya
采集了中国西北部第二大内陆河--黑河流域的流量和地下水位资料。利用从河水中采集的同位素数据，分析了地表水与地下水的相互作用，特别是在沙漠下游。在非灌溉期，下游荒漠河段始终存在来自绿洲中游地下水的河水。在此期间，河水不仅在靠近河流的河岸林区对地下水进行了补给，而且在远离河流的荒漠河岸边缘地区也对地下水进行了补给。在灌溉期，下游沙漠河段的河流通常会干涸。下游河水在中游短期放水后出现，河岸林区地下水位迅速上升，但在短期放水刚结束时又再次下降。由于沙漠-河岸交错区的短期径流与地下水的混合比小于河岸林区，短期径流对沙漠-河岸交错区的地下水补给没有贡献。
River discharge and groundwater level data were collected in the Heihe River basin, which is the second largest inland river in Northwestern China. The surfacewater-groundwater interaction, particularly in the lower desert reaches, was analyzed with the help of isotope data of water collected from the river. In the non-irrigation period, river water, which originated from the groundwater in the middle oasis reaches, was present throughout the period in the lower desert reaches. During this period, the river water recharged the groundwater not only in the riparian forest region located near the river but also in the desert-riparian fringe region located farther away from the river. In the irrigation period, the river was usually dried up in the lower desert reaches. The river water in the lower reaches appeared just after short-term releases from the middle reaches; the groundwater level in the riparian forest region rose rapidly, but it declined again just after the short-term releases finished. Since the mixing ratio of the short-term released discharge to the groundwater in the desert-riparian fringe region was smaller than that in the riparian forest region, the short-term released discharge did not contribute to the groundwater recharge in the desert-riparian fringe region.