土壤入渗积水时间预测模型研究
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国家自然科学基金项目(面上项目,重点项目,重大项目)


Models for forecasting infiltration-waterlogging time in soil
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    摘要:

    在室内进行了8种均质土壤入渗积水时间的测定试验。采用不同的变量组合形式、利用数理统计原理对土壤入渗积水时间进行预测。结果表明:(1)用土壤干容重、初始含水量、土壤砂粒、黏粒含量、供水强度等常规土壤物理参数预测入渗积水时间是可行的。(2)多元线性预测模型和多元非线性预测模型的预测精度结果基本相同,只是所得的模型参数不同,多元线性预测模型更简单。(3)在同一预测模型下,考虑的因素越多,预测模型的预测精度相对越高。

    Abstract:

    An indoor test was carried out to measure time it takes for water to go from infiltration to waterlogging in 8 types of soils homogenous in texture. To predict the time, different forms of variable combination were adopted and principles of mathematical statistics used. Results show that it is feasible to forecast the time using five conventional soil physical parameters, i.e. soil bulk density, initial moisture, sand content, clay content and water supply intensity; forecasting using the multivariable linear prediction model is more or less the same in accuracy as that using the multivariable linear prediction model, except that they yield different parameters, and that the former is more simple; and when using any one of the two, relatively speaking the more factors are taken into account, the more precise the prediction would be.

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李雪转,樊贵盛.土壤入渗积水时间预测模型研究[J].土壤学报,2012,49(2):269-274. DOI:10.11766/10.11766/trxb201012280552 Li Xuezhuan, Fan Guisheng. Models for forecasting infiltration-waterlogging time in soil[J]. Acta Pedologica Sinica,2012,49(2):269-274.

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  • 收稿日期:2010-12-28
  • 最后修改日期:2011-07-28
  • 录用日期:2011-08-23
  • 在线发布日期: 2011-12-15
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