| 黄土坡面细沟形态及其量化参数特征 |
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| 引用本文： | 张攀,姚文艺,肖培青.黄土坡面细沟形态及其量化参数特征[J].水土保持通报,2014(5):15-17,24. |
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| 作者姓名： | 张攀 姚文艺 肖培青 |
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| 作者单位： | 黄河水利科学研究院 水利部 黄土高原水土流失过程与控制重点实验室, 河南 郑州 450003;河海大学 水利水电工程学院, 江苏 南京 210098;黄河水利科学研究院 水利部 黄土高原水土流失过程与控制重点实验室, 河南 郑州 450003;黄河水利科学研究院 水利部 黄土高原水土流失过程与控制重点实验室, 河南 郑州 450003 |
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| 基金项目： | 国家自然科学基金项目"黄土坡面细沟形态量化描述及侵蚀产沙响应规律"(51409001);水利部黄土高原水土流失过程与控制重点实验室项目"黄土坡面不同雨强对细沟侵蚀发育形态的影响"(201206);中央级公益性科研院所基本科研业务费专项"坡面细沟形态非线性量化指标体系研究"(HKY-JBYW-2014-02) |
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| 摘 要： | 通过黄土坡面模型和人工模拟降雨试验,定量分析了在45,87和127mm/h降雨强度下坡面细沟形态量化参数特征。结果表明,细沟形态量化参数随雨强的增加并不是单一的增加或减少,而是随着侵蚀的发展呈波动变化。裸地1和裸地2由于土壤容重的不同表现出不同的变化趋势。细沟分形维数与长度、密度间存在良好的正相关关系,说明非线性量化参数与传统单因子量化参数之间不是孤立的。分形维数作为整体性的量化参数,在坡面侵蚀发育的一定阶段内能够较好地表征细沟长度、密度的变化趋势。
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| 关 键 词： | 坡面细沟 形态量化参数 分形维数 模拟降雨 |
| 收稿时间： | 2013/10/16 0:00:00 |
| 修稿时间： | 2013/11/6 0:00:00 |
Morphological Development of Rill and Its Quantitative Morphological Parameters Characteristics in Loess Hillslope |
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| ZHANG Pan,YAO Wen-yi and XIAO Pei-qing.Morphological Development of Rill and Its Quantitative Morphological Parameters Characteristics in Loess Hillslope[J].Bulletin of Soil and Water Conservation,2014(5):15-17,24. |
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| Authors: | ZHANG Pan YAO Wen-yi and XIAO Pei-qing |
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| Institution: | Yellow River Institute of Hydraulic Research, Key Laboratory of Soil and Water Loss Process and Control on the Loess Plateau, Ministry of Water Resources, Zhengzhou, Henan 450003, China;College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, Jiangsu 210098 China;Yellow River Institute of Hydraulic Research, Key Laboratory of Soil and Water Loss Process and Control on the Loess Plateau, Ministry of Water Resources, Zhengzhou, Henan 450003, China;Yellow River Institute of Hydraulic Research, Key Laboratory of Soil and Water Loss Process and Control on the Loess Plateau, Ministry of Water Resources, Zhengzhou, Henan 450003, China |
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| Abstract: | Using the loess hillslope model and the artificial simulated rainfall experiment, morphological development of rill and the quantitative characteristics of morphological parameters were analyzed quantitatively under the rainfall intensities of 45, 87, and 127mm/h. The results showed that the quantitative morphological parameters of rill was not a single increase or decrease with the rainfall intensity increase, it presented the volatility changes with soil erosion development. Bare ground 1 and bare ground 2 showed different trends of change because of their different soil volume weight. A good relationship between the rill length and density and the fractal dimension of rill showed that the non-linear quantization parameter was not independent with the traditional one-factor quantization parameters. The fractal dimension as a quantitative parameter, can better reflect the change of rill length and density. |
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| Keywords: | rill in hillslope quantitative morphological parameters fractal dimension simulated rainfall |
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