| 紫色土坡面径流与侵蚀特征模拟试验研究 |
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| 引用本文： | 钟壬琳,张平仓.紫色土坡面径流与侵蚀特征模拟试验研究[J].长江科学院院报,2011,28(11):22-27. |
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| 作者姓名： | 钟壬琳 张平仓 |
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| 作者单位： | 1.浙江省水土保持监测中心，杭州 310009；2.长江科学院水土保持研究所，武汉430010 |
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| 基金项目： | 国家重点基础研究发展计划(2007CB407203) |
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| 摘 要： | 应用人工模拟降雨试验，对紫色土坡面径流与侵蚀特征进行了模拟试验研究。结果表明：紫色土坡面初始产流时间随着雨强的增大而减少，且在小雨强下坡度对初始产流时间的影响显著；紫色土坡面径流总量有随坡度和雨强的增加而增大的趋势，坡度较大时，雨强对径流总量影响不明显；紫色土坡面侵蚀总量随坡度和雨强的增大而增大，１０°、１５°、２０°坡的侵蚀量较大，在３１０６．０３～８１１７．０９ｇ之间，故应在坡度≥１０°的坡地上实施有效的水土保持措施。
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| 关 键 词： | 紫色土 人工模拟降雨试验 径流量 侵蚀量 |
Experimental Study on Characteristics of Runoff and Erosional Sediment Yield on Purple Soil Slope |
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| ZHONG Ren-lin,ZHANG Ping-cang.Experimental Study on Characteristics of Runoff and Erosional Sediment Yield on Purple Soil Slope[J].Journal of Yangtze River Scientific Research Institute,2011,28(11):22-27. |
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| Authors: | ZHONG Ren-lin ZHANG Ping-cang |
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| Affiliation: | Water and Soil Conservation Monitoring Center of Zhejiang Province, Hangzhou 310009, China; 2.Yangtze River Scientific Research Institute, Wuhan 430010, China |
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| Abstract: | We study the characteristics of runoff and erosional sediment yield on purple soil slopes by artificial rainfall simulation experiments.The result reveals that the initial runoff yield duration of purple soil slope decreases as rainfall intensifies,and the initial runoff yield is remarkably affected by the slope gradient under small rainfall intensity.The total volume of runoff on purple soil slope tends to rise with the increase of slope gradient and rainfall intensity;whereas rainfall intensity has no obv... |
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| Keywords: | purple soil artificial rainfall simulation experiments runoff volume erosional sediment yield |
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