| 坡面植被分布对降雨侵蚀的影响研究 |
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| 引用本文： | 游珍,李占斌,蒋庆丰. 坡面植被分布对降雨侵蚀的影响研究[J]. 泥沙研究, 2005, 16(6): 40-43 |
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| 作者姓名： | 游珍 李占斌 蒋庆丰 |
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| 作者单位： | 南通大学,地理科学学院,江苏,南通,226007;中国科学院水利部水土保持研究所,黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西,杨凌,712100;中国科学院水利部水土保持研究所,黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西,杨凌,712100;西安理工大学,陕西,西安,710000;南通大学,地理科学学院,江苏,南通,226007;中国科学院,南京地理与湖泊研究所,江苏,南京,210008 |
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| 基金项目： | 国家自然科学基金项目“坡面径流侵蚀输沙动力过程试验研究”(40371075)，黄河水利委员会“十五”重大治黄科技项目“大理河流域水土保持生态工程建设的减沙作用研究”(2002SZ08) |
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| 摘 要： | 在黄土高原约15°的自然荒草坡面上,对两个坡面小区进行野外模拟降雨实验,其中一个从坡顶向坡底逐渐破坏地表植被和结皮,另一个从坡底向坡顶逐渐破坏地表植被和结皮,分别对破坏过程中各种植被面积下的降雨产流产沙量进行比较,结果认为:在相同面积条件下,位于坡底的植被比位于坡顶的植被保水作用高2.4倍,保土作用高2.8倍;随着植被面积的减少,坡面产流量和产沙量呈不均匀的增加趋势,在不同的植被面积变化范围,坡面产流量和产沙量的增幅不同。
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| 关 键 词： | 模拟降雨 坡面植被格局 坡面降雨侵蚀产流产沙 草地植被 |
| 文章编号： | 0468-155X(2005)06-0040-04 |
| 收稿时间： | 2004-11-24 |
| 修稿时间： | 2004-11-24 |
Study on the effect of vegetation patterns on the slope on the rainfall erosion |
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| YOU Zhen,LI Zhan-bin,JIANG Qing-feng. Study on the effect of vegetation patterns on the slope on the rainfall erosion[J]. Journal of Sediment Research, 2005, 16(6): 40-43 |
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| Authors: | YOU Zhen LI Zhan-bin JIANG Qing-feng |
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| Abstract: | Two artificial rainfall experiments are conducted on the two natural wild slopes.The vegetation and top soil crust are destroyed from the top to the bottom of the slope in one experiment and from the bottom to the top in the other experiment.The experimental results show that under the same vegetation area the waterconserving capacity of the vegetation near the bottom of the slope is 2.4 times higher than that near the top of the slope,and the soilconserving capacity of the vegetation near the bottom of the slope is 2.8 times higher than that near the top of the slope.With the decrease of vegetation area,both runoff generation and sediment yield increase unevenly. |
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| Keywords: | artificial rainfall vegetable pattern on slope runoff generation and soil erosion grass covered land |
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