A study of soil water movement combining soil water potential with stable isotopes at two sites of shallow groundwater areas in the North China Plain
A study of soil water movement combining soil water potential with stable isotopes at two sites of shallow groundwater areas in the North China Plain
复制标题
华北平原浅层地下水区两点土壤水势与稳定同位素相结合的土壤水运动研究
DOI：
10.1002/hyp.7267
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发表时间：
2009-04
影响因子：
3.2
通讯作者：
王鹏
中科院分区：
文献类型：
--
作者：
宋献方;王仕琴*;肖国强;王志民;刘鑫;王鹏
华北平原浅层地下水区，垂直方向的降水入渗和蒸散是水循环的主要过程，其中非饱和带在降水与地下水的转化过程中发挥着重要作用。本文选取河北省沧州（CZ）和衡水（HS）两个地下水位较浅的典型站点，分析降水、土壤水和地下水之间的关系。在每个站点，对降水、10、20、30、50、70、100、150、200、300 cm深度的土壤水和地下水进行采样，以分析氢和氧的稳定同位素组成。观测相应深度的土壤水势。尽管两地气候相似，但入渗过程、土壤水分运动和地下水补给来源存在一定差异。上部深度发生蒸发，导致土壤潜力下降，重同位素富集。在CZ位点，降水以活塞方式入渗，入渗过程中存在明显的混合效应。 100厘米深度以上的土壤中可能存在优先流。然而，HS站点土壤水以活塞方式运动，地下水主要靠降水补给。当降水补给地下水时，会经历强烈的蒸发效应。土壤水运动机制研究结果提供了华北地区中东部地区降水、土壤水和地下水之间的转换关系。版权所有 © 2009 约翰·威利父子有限公司
In the shallow groundwater areas of the North China Plain (NCP), precipitation infiltration and evapotranspiration in the vertical direction are the main processes of the water cycle, in which the unsaturated zone plays an important role in the transformation process between precipitation and groundwater. In this paper, two typical sites in Cangzhou (CZ) and Hengshui (HS) of Hebei province with shallow water tables were selected to analyse the relationship among precipitation, soil water and groundwater. At each site, precipitation, soil water at depths 10, 20, 30, 50, 70, 100, 150, 200, 300 cm, and groundwater were sampled to analyse the stable isotope compositions of hydrogen and oxygen. The soil water potentials at the corresponding depths were observed. Although the climates at the two sites are similar, there are some differences in the infiltration process, soil water movement and groundwater recharge sources. Evaporation occurred at the upper depths, which led to the decrease of soil potential and the enrichment of heavy isotopes. At the CZ site, precipitation infiltrated with piston mode, and an obvious mixture effect existed during the infiltration process. Preferential flow may exist in the soil above 100 cm depth. However, at the HS site soil water moved in piston mode, and groundwater was mainly recharged by precipitation. When precipitation recharged the groundwater it experienced a strong evaporation effect. The results of the soil water movement mechanism provides the transformation relationship among precipitation, soil water and groundwater in the middle and eastern NCP. Copyright © 2009 John Wiley & Sons, Ltd.
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影响因子：
6.1
作者：
Schume, H;Jost, G;Katzensteiner, K
通讯作者：
Katzensteiner, K
影响因子：
6.4
作者：
ALLISON, GB;HUGHES, MW
通讯作者：
HUGHES, MW
影响因子：
6.4
作者：
J. A. Robertson;C. Gazis
通讯作者：
J. A. Robertson;C. Gazis
影响因子：
6.4
作者：
T. Dinçer;G. Davis
通讯作者：
T. Dinçer;G. Davis
影响因子：
6.4
作者：
G. B. Allison;C. Barnes
通讯作者：
G. B. Allison;C. Barnes