自然资源学报

自然资源学报 ›› 2011, Vol. 26 ›› Issue (1): 145-155.doi: 10.11849/zrzyxb.2011.01.015

• 资源评价 • 上一篇    下一篇

华北平原地下水浅埋区土壤水分动态的时间序列分析

宋献方1, 王仕琴1, 肖国强2, 王志民1, 刘鑫1   

  1. 1. 中国科学院 陆地水循环与地表过程重点实验室, 中国科学院 地理科学与资源研究所, 北京 100101;
    2. 天津地质矿产研究所, 天津 300170
  • 收稿日期:2009-09-01 修回日期:2010-08-31 出版日期:2011-01-30 发布日期:2011-01-30
  • 作者简介:宋献方(1965- ),男,研究员,博士生导师,主要研究流域水循环及水环境、同位素水文学。E-mail: songxf@igsnrr.ac.cn
  • 基金资助:

    国家"973"课题"地下水-环境-社会经济耦合机制与评价体制"(2010CB428805);国家自然科学基金重点项目"水循环过程不同尺度观测与对比试验研究——以白洋淀流域为例"(40830636)。

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

SONG Xian-fang1, WANG Shi-qin1, XIAO Guo-qiang2, WANG Zhi-min1, LIU Xin1   

  1. 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:2009-09-01 Revised:2010-08-31 Online:2011-01-30 Published:2011-01-30

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40 | 9

摘要： 以沧州和衡水实验站为华北平原地下水浅埋区典型区,利用3 a土壤水负压和地下水观测数据,研究了不同年份和土壤质地土壤水分动态。土壤水分数据表明,平水年或丰水年后的枯水年土壤水分从表层到深层为增长型趋势,枯水年为增长—减小—增长趋势;在土壤非均值条件下(沧州),土壤水分具有补给和消耗的季节性变化,而土壤均质条件下(衡水),无明显季节性变化。时间序列分析结果表明,平水年或丰水年沧州实验点土壤浅层(100 cm以上)和深层(100 cm以下)具有明显差异,从上到下土壤水分更加稳定,衡水实验点无明显差异性;枯水年两实验站浅层和深层差异性更小。土壤质地在降水和土壤水以及地下水的响应关系方面具有显著作用。

关键词: 土壤水, 水分动态特征, 华北平原

Abstract: 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.

Key words: soil water, soil moisture dynamics, North China Plain

中图分类号: 

  • S152.7