| 田间土壤水分特征曲线的标定和Kriging估值研究 |
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| 引用本文： | 赵凤伟.田间土壤水分特征曲线的标定和Kriging估值研究[J].中国农村水利水电,2014,0(6):9-12. |
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| 作者姓名： | 赵凤伟 |
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| 作者单位： | 辽宁省水文水资源勘测局 |
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| 基金项目： | 水利部公益性行业科研资助项目 |
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| 摘 要： | 对田间同深度土壤水分特征曲线进行了标定，探讨了其标定系数的半方差特征,并对其标定系数进行了Kriging估值。研究表明，田间同深度不同点的土壤水分特征曲线存在显著的空间变异性, 通过确定不同点的标定系数可以将田间不同点的土壤水分特征曲线用一个统一的曲线来表达,同时田间同深度不同点的标定系数存在显著空间相关性,利用 Kriging估值方法可对其标定系数进行最优估值,用较少点的实测土壤水分特征曲线确定整个田块的土壤水分特征曲线的空间分布。
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| 收稿时间： | 2013-11-05 |
| 修稿时间： | 2014-01-13 |
Scaling and kriging interpolation of soil water retention curve in field |
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| Abstract: | This paper analyzed the spatial variation and scaling method of soil water retention curve in field at 40 cm depth, the semi-variance of soil water retention curve’s scaling coefficient and its Kriging interpolation method is studied. It is shown that there are notable spatial variation in the soil water retention curve at same depth of different points in the field, scaling method is a very promise tool for studying the soil water retention curve in field scale，and the scaling coefficient of soil water retention curve have apparently spatial dependence in field. Kriging method can be used to interpolate the scaling coefficient of soil water retention curve in the field, which can determine the space distribution of the soil water retention curve of the field with a few actual measurement points . |
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