| 非饱和土壤水分运动参数空间变异特性的统计分析 |
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| 引用本文： | 张新民,沈冰,谢志伟.非饱和土壤水分运动参数空间变异特性的统计分析[J].农业工程学报,2000,16(1):18-21. |
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| 作者姓名： | 张新民 沈冰 谢志伟 |
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| 作者单位： | 西安理工大学;西安理工大学;甘肃省水利科学研究所 |
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| 摘 要： | 非饱和土壤水分运动参数的空间变异规律是大区域参数估计的基础。分析秦王川灌区土壤物理性质及水分运动参数空间变异的统计规律。特征曲线与导水率标定系数具有对数正态分布,且与干容重和物理性粘粒含量P0.01呈直线相关。F检验结果,相关达到显著水平。
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| 关 键 词： | 非饱和土壤 水分运动参数 空间变异 |
| 收稿时间： | 1998/11/4 0:00:00 |
| 修稿时间： | 1998-11-04 |
Statistical Analysis on Spatial Variation of Unsaturated Soil Water Movement Parameter |
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| Zhang Xinmin,Sheng Bing and Xie Zhiwei.Statistical Analysis on Spatial Variation of Unsaturated Soil Water Movement Parameter[J].Transactions of the Chinese Society of Agricultural Engineering,2000,16(1):18-21. |
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| Authors: | Zhang Xinmin Sheng Bing and Xie Zhiwei |
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| Abstract: | Spatial variation pattern of water movement parameters in unsaturated soil is the base of parameter estimation in a large area.Analysis of the spatial variation pattern of soil physical properties and water movement parameters in Qingwangchuan Irrigation Area,showed that the calibration coefficients of soil moisture characteristic curves and hydraulic conductivity were in a logarithemic distribution. They both had the linear relationship with the dry density and clay content of soil.F-test showed that the correlationship was significant. |
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| Keywords: | unsaturated soil water movement parameter spatial variation |
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