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Time Series Analysis of Soil Water Dynamics in the Shallow Groundwater Areas of North China Plain

  • 1. Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Tianjin Institute of Geology and Mineral Resources, Tianjin 300170, China

Received date: 2009-09-01

  Revised date: 2010-08-31

  Online published: 2011-01-30


The typical shallow groundwater areas of Cangzhou and Hengshui experimental sites were selected and the observed soil water potential and groundwater data from 2004 to 2006 were used to study the soil moisture dynamics with different soil textures. The temporal and special distributions of soil moisture show that soil moisture in the soil profile increases from top to down depth in normal year or in dry year after rainy year and it increases, then decreases and increases in dry year. At Cangzhou site, where soil texture is composed of sand loam and silt loam with good vegetation cover, the soil moisture displays seasonal dynamics of storing moisture period and missing moisture period. It doesn’t show the seasonal dynamics at Hengshui site with homogeneous sand loam and scarce vegetation. The results of time series analysis show that precipitation is the random event, however, soil moisture and groundwater have high autocorrelation with themselves. There exists a significant difference between the shallow soil above 100 cm depth and the deep soil below 100 cm depth at Cangzhou site in rainy year. And the stability of soil moisture increases from shallow to deep depth. However, the difference between shallow soil depths and deep soil depths is insignificant at Hengshui site. In dry year the difference is smaller than normal or rainy year. Soil texture plays a prominent role in the correlation between precipitation and soil water and between precipitation and groundwater.

Cite this article

SONG Xian-fang, WANG Shi-qin, XIAO Guo-qiang, WANG Zhi-min, LIU Xin . Time Series Analysis of Soil Water Dynamics in the Shallow Groundwater Areas of North China Plain[J]. JOURNAL OF NATURAL RESOURCES, 2011 , 26(1) : 145 -155 . DOI: 10.11849/zrzyxb.2011.01.015


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