| 施加PAM的坡地降雨入渗过程及其模型研究 |
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| 引用本文： | 刘纪根,雷廷武,等.施加PAM的坡地降雨入渗过程及其模型研究[J].水土保持学报,2001,15(4):51-54. |
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| 作者姓名： | 刘纪根 雷廷武 |
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| 作者单位： | 1. 中国科学院水利部水土保持研究所,
2. 中国科学院水利部水土保持研究所；中国农业大学水利与土木工程学院, |
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| 基金项目： | 引进国外杰出人才资金、(内蒙)山丘区雨水储蓄农业高效利用产业化示范工程项目资助(982602) |
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| 摘 要： | 作为一种新型高效的土壤结构改良剂 PAM,在一定条件下能显著地提高土壤入渗能力 ,减小坡面径流。采用室内人工模拟降雨试验 ,研究了不同 PAM覆盖度下降雨产流随时间的动态变化及其与雨强、坡度的关系 ,以及入渗率随时间的变化规律 ,分析了 PAM、坡度、雨强对入渗率的影响。结果表明 ,地表施加 PAM后土壤的入渗率及稳定入渗率都比未施 PAM显著提高。通过对比施加 PAM后 Kostiakov入渗模型与 Horton入渗模型的显著性 ,表明 Horton入渗公式的适用性更好
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| 关 键 词： | PAM 产流历时 入渗率 |
| 文章编号： | 1009-2242(2001)04-0051-04 |
Processes and Model of Rainfall-Infiltration on Slope Land Treated with PAM |
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| LIU Ji-gen,LEI Ting-wu.Processes and Model of Rainfall-Infiltration on Slope Land Treated with PAM[J].Journal of Soil and Water Conservation,2001,15(4):51-54. |
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| Authors: | LIU Ji-gen~ LEI Ting-wu~ |
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| Institution: | LIU Ji-gen~1,LEI Ting-wu~ |
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| Abstract: | PAM, as a new efficient soil amendment, can significantly increase soi l infiltration rate and reduce runoff. Rainfall simulator was used in this study to investigate the relationships between the time of runoff yield and rainfall intensity and slopes, as well as the dynamic process of infiltration rate cha nge with time, for slope land at different coverage of PAM. It was found that infiltration rate and stable infiltration rate are increased when covered with P AM. Kostiakov and Horton infiltration models were used to analyze their infiltra tion processes. |
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| Keywords: | PAM time of runoff yield infiltrati on rate |
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