Journal of Hebei University of Water Resources and Electric Engineering

Journal of Hebei University of Water Resources and Electric Engineering ›› 2021, Vol. 31 ›› Issue (2): 30-33+50.DOI: 10.16046/j.cnki.issn2096-5680.2021.02.005

• Technology Theory and Application • Previous Articles     Next Articles

ZHANG Jing-xiao1,2,LV Wang3,WEN Yong-fu1,HAN Chao1,JING Ming3   

  1. 1.Hebei University of Water Resources and Electric Engineering,061001,Cangzhou,Hebei,China;
    2.China Institute of Water Resources and Hydropower Research,100038,Beijing,China;
    3.Yellow River Institute of Hydraulic Research,450003,Zhengzhou,Henan,China

  • Received:2020-10-12 Revised:2020-11-13 Online:2021-06-30 Published:2021-07-30

自然降水对陕北裸露干化黄土的修复深度的试验研究

张敬晓１，２，吕　望３，温永福１，韩　超１，景　明３   

  1. 1.河北水利电力学院，河北省沧州市重庆路1号 061001;
    2.中国水利水电科学研究院，北京市海淀区车公庄西路20号 100038;
    3.黄河水利科学研究院，河南省郑州市顺河路45号 450003

  • 通讯作者: 吕望(1990-)，男，河南洛阳人，工程师，研究方向:灌溉排水理论及节水技术研究｡E-mail:ysgzlw@163.com
  • 作者简介:张敬晓(1987-)，男，河北衡水人，博士生，讲师，研究方向:水资源高效利用研究｡E-mail:zhangjingxiao198704@126.com
  • 基金资助:
    黄河水利科学研究院基本科研业务费专项项目（HKY-JBYW-2020-13； HKY-JBYW-2020-30）

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Abstract: In order to clarify the remediation characteristics of the dried loess by natural rainfall in northern shaanxi,a large soil column is set up in the field of the jujube cultivation test site of Yuanzhi mountain in Mizhi county,and the soil moisture and rainfall status are observed continuously for a long time.The results show that the distribution of natural rainfall in the loess hilly region has obvious imbalance regularities during years and months.The maximum infiltration depth of a single rainfall of 24.4,8.2,and 43.6mm are 40,20,and 120cm respectively.The relationship between precipitation(P)and maximum infiltration depth(Zmax)is a power function:Zmax=28.657P0.78486 (R2=0.89).The cumulative effect of multiple rainfall is conducive to the promotion of deep soil water transport.Under the cumulative promotion of rainfall conditions,the restoration depth of dried loess by natural rainfall from 2014to 2019reached 1000cm.The results have important guiding significance for clarifying the remediation mechanism of natural rainfall,exploring the remediation time of the dried loess,and strengthening the rational and efficient utilization of precipitation resources.


Key words: natural rainfall, dried loess, soil moisture, restoration depth

摘要： 为明确自然降水对陕北干化黄土的修复特性,研究中在米脂县远志山红枣栽培试验基地布设野外大型土柱,并且长期定位连续监测天然降水与土柱土壤水分状况。结果表明:黄土丘陵区自然降水具有明显的年际、月际分布不均匀性;降水量为24.4mm,8.2mm,43.6mm的3个单次降水最大入渗深度依次为40cm,20cm,120cm。单次降水量P与最大入渗深度Zmax呈幂函数关系变化Zmax=28.657P0.78486(R2=0.89);多次降水的累积作用有助于促进深层土壤水分运移,在降水的累积促进作用下,2014～2019年间自然降水对干化黄土的修复深度达到1 000cm。研究结果对于明确自然降水的修复机制,探讨干化黄土的修复时限,以及加强合理、高效利用降水资源等都具有重要的指导意义。

关键词: 自然降水, 干化黄土, 土壤水分, 修复深度

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