李卓,吴普特,冯浩,赵西宁,黄俊.不同粘粒含量土壤水分入渗能力模拟试验研究[J].干旱地区农业研究,2009,27(3):71~77
不同粘粒含量土壤水分入渗能力模拟试验研究
Effects of soil clay particle content on soil infiltration capacity by simulated experiments
  
DOI：10.7606/j.issn.1000-7601.2009.03.14
中文关键词:  土壤水分入渗  土壤粘粒含量  入渗模型
英文关键词:soil water infiltration  soil clay particle content  infiltration model
基金项目:国家863计划课题“降水资源转化利用技术”(2006AA100204)； 新世纪优秀人才支持计划资助(01140602)； 高等学校学科创新引智计划资助； 国家自然科学基金“黄土高原小流域降雨径流调控利用潜力动态分析与优化配制研究”(40701092)
作者单位
李卓 College of Resources and Environment Northwest A ＆ F University, Yangling, Shaanxi 712100, China 
吴普特 Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China 
冯浩 Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China 
赵西宁 Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China 
黄俊 College of Water Resources and Architectural Engineering Northwestern A＆F University, Yangling, Shaanxi 712100, China 
摘要点击次数: 159
全文下载次数: 102
中文摘要:
      为研究土壤粘粒含量对土壤入渗能力的影响,通过向自然土壤中添加沙粒、人工粘土的方法配制不同粘粒含量土壤,用土柱积水入渗模拟了人工配制土壤中粘粒含量对其入渗能力的影响。结果表明:(1)土壤粘粒含量对土壤入渗能力有较大影响,随粘粒含量增多,入渗能力递减:<0.001 mm粘粒含量从6%增加至40.4%时,稳定入渗速率从0.0169 cm/min降低至0.0068 cm/min,90 min累积入渗量则从3.66 cm降低至2.02 cm;(2)稳定入渗速率9、0 min累积入渗量与粘粒及物理性粘粒含量分别呈幂函数负相关、指数负相关关系,但与粘粒含量相关性更为显著;(3)通过对Green-Ampt模型、Philip模型及Kostiakov模型的参数拟合及累积入渗量计算,发现在本试验中Kostiakov模型拟合精度最高,Philip模型次之,Green-Ampt模型较差,说明Kostiakov模型对于均质土体是个比较实用的入渗模型。
英文摘要:
      In order to investigate the influence of soil clay particle content on soil infiltration capacity, the researchers compounded some kinds of soils by adding sand and clay to natural soil, and then simulated the influence of artificial soil clay particle content on soil infiltration capacity by water accumulated column infiltration.The results showed that: (1) clay particle content has a great effect on soil infiltration capacity, the more clay contained, the weaker infiltration capacity.The stable infiltration rate decreased from 0.0169 cm/min to 0.0068 cm/min and 90-min cumulative infiltration decreased from 3.66 cm to 2.02 cm as clay particle (<0.001 mm) content increased from 6% to 40.4%. (2) The stable infiltration rate and 90-min cumulative infiltration have negative power and exponential function relationship with clay particle content and so physical clay particle (<0.01 mm) content.But the correlation with clay particle content was better. (3) Through fitting parameters of Green-Ampt model, Philip model, Kostiakov model and using these models to calculate the cumulative infiltration, the researchers found that Kostiakov model has highest fitting accuracy, Philip model took second place and Green-Ampt model was worst in this experiment.It illustrated that Kostiakov model is more practical.
查看全文  查看/发表评论  下载PDF阅读器