| 用非饱和土壤物理参数模拟坡面产流过程研究 |
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| 引用本文： | 张光辉,蒋定生,邵明安.用非饱和土壤物理参数模拟坡面产流过程研究[J].山地学报,2001,19(1):14-18. |
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| 作者姓名： | 张光辉 蒋定生 邵明安 |
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| 作者单位： | 1. 北京师范大学资源与环境科学系,
2. 中科院水利部水土保持研究所, |
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| 基金项目： | 国家杰出青年科学基金项目(49725103)和国家自然科学青年基金(40001014)资助。 |
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| 摘 要： | 采用人工模拟降雨方法，在用蒸发法测定非饱和土壤物理参数和基础上，运用修正的Green—Ampt入渗模型，结合退水曲线法和坡面运动波模型．研究了9场不同雨强和不同历时模拟降雨的产流过程。结果表明模拟误差在11．0％-30．7％间变化，80％的模：似误差可控制在18％以内，说明用非饱和土壤物理参数可以进行一般精度要求的坡面径流过程模拟。
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| 关 键 词： | 非饱和土壤物理参数 坡面产流 过程模拟 运动波模拟 |
| 文章编号： | 1008-2786(2001)01-0014-05 |
| 修稿时间： | 2000年4月14日 |
Runoff Processes Simulation on Land Based on Unsaturated Soil Physical Properties |
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| ZHANG Guang-hui,JIANG Jing-sheng,SHAO Ming-an.Runoff Processes Simulation on Land Based on Unsaturated Soil Physical Properties[J].Journal of Mountain Research,2001,19(1):14-18. |
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| Authors: | ZHANG Guang-hui JIANG Jing-sheng SHAO Ming-an |
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| Abstract: | Runoff processes simulation is very significant for soil erosion mechanism analyzing and erosion model building.In the past two decades,many runoff simulation model were built in China based on different conditions,however,they were difficult to qpply widely.Therefore,building one new model is necessary.In order to find one easy and exact way to simulate runoff process on slope land,9 simulated rainfall experiments were carried out on one plot with 10mlength,2m width and 15 degree at Ansai field station.Soil physical properties are the basic information to influence soil infiltration and runoff appeating.So soil physical properties were measured using 2 soil samples taking from polt for dach rainfall event by means of STAR-1 and unsaturated soil arameters, which was analyses by Appia program, were obtained.Those parameters were used to calculate soil absorptive parameter Sf.And then,the modified Green &Ampt infiltration model,Retention Curve method and kinematic wave model were used to simulate runoff processes.The results indicate that using unsaturated soil physical properties to simulate runoff processes are available and the relative errors vary from 11.0 to 30.7%,However, more 80% simulated drror are less than 18 percent and it demonstrates using unsaturated soil physical properties to predict runoff process is reasonable and should be used widely. |
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| Keywords: | unsaturated soil physical properties slope land runoff process simulation kinematic wave model |
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