| 用风洞实验方法计算土壤风蚀量的时距问题 |
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| 引用本文： | 张春来,董光荣.用风洞实验方法计算土壤风蚀量的时距问题[J].中国沙漠,1996,16(2):200-203. |
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| 作者姓名： | 张春来 董光荣 |
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| 作者单位： | 中国科学院兰州沙漠研究所 |
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| 摘 要： | 通过对延津县沙质壤土原状土进行风蚀风洞模拟实验，探讨了土壤风蚀量计算中的时距问题。结果表明，前人使用“风蚀模数”概念来计算土壤风蚀量会导致较大误差，原因在于同一风蚀事件中单位时间内的风蚀量随吹蚀时间的延续而递减，在风洞实验计算风蚀量时使用“累积风蚀量”概念将会有更精确的结果。
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| 关 键 词： | 风蚀量计算，风蚀模数，累积风蚀量 |
TIME PROBLEM IN CALCULATING SOIL WIND EROSION RATE WITH WIND TUNNEL EXPERIMENT |
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| Zhang Chunlai, Dong Guangrong, Dong Zhibao, Li Chanzhi.TIME PROBLEM IN CALCULATING SOIL WIND EROSION RATE WITH WIND TUNNEL EXPERIMENT[J].Journal of Desert Research,1996,16(2):200-203. |
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| Authors: | Zhang Chunlai Dong Guangrong Dong Zhibao Li Chanzhi |
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| Abstract: | By use of wind tunnel experiment of wind erosion, the time problem in calculating soilwind erosion rate was discussed in this paper. The experimental results indicated that using the conceptof wind erosion modulus to calculate soil wind erosion rate would lead to a large variation, because thewind erosion rates decrease gradually with increasing erosion time. Our experiments showed that usingthe concept of cumulative rates of soil wind erosion would obtain a more precise result. |
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| Keywords: | Soil wind erosion Wind tunnel experiment Cumulative rates of soil wind erosion |
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