| 黄土丘陵沟壑区坡向对产流产沙影响的研究 |
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| 引用本文： | 方海燕,蔡强国,李秋艳. 黄土丘陵沟壑区坡向对产流产沙影响的研究[J]. 中国水土保持, 2011, 0(5): 39-42 |
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| 作者姓名： | 方海燕 蔡强国 李秋艳 |
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| 作者单位： | 1. 中国科学院,地理科学与资源研究所,陆地水循环及地表过程重点实验室/地貌与流域过程研究室,北京,100101
2. 中国农业大学,水利与土木工程学院,北京,100083 |
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| 基金项目： | 国家重点基础研究发展计划研究项目，中科院院长特别奖科研启动专项"中国典型水土流失区水沙尺度效应及地带性研究"项目，水利部黄河泥沙重点实验室基金项目，中国博士后科学基金资助项目 |
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| 摘 要： | 坡向是坡面产流产沙的重要影响因素。以黄土高原岔巴沟流域新庄径流试验场阴坡和阳坡2个径流小区为研究对象,根据发生在阳坡农地和阴坡荒坡地上的11场降雨事件,对阳坡和阴坡上的产流产沙状况进行了对比分析。结果表明:2个径流小区的产流产沙差异显著。阳坡农地由于太阳辐射量和温度高于阴坡,土壤含水量较低,同时表层土壤扰动较阴坡荒坡地大,土壤孔隙度高,使其产流能力小于阴坡;阳坡土质疏松,沙量来源充沛,径流含沙量和侵蚀模数大于阴坡的概率分别在88%和85%以上。降雨强度对阴坡、阳坡产流产沙差异的影响显著,阴坡和阳坡的产流产沙均在0.05的概率水平上受平均降雨强度的显著影响,表现出平均降雨强度越大阴坡、阳坡产流产沙差异越明显的特征,而降雨量对阴坡、阳坡产流产沙差异的影响并不明显,这是黄土高原超渗产流的特征之一。
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| 关 键 词： | 坡向 土地利用 降雨特征 产流产沙 黄土丘陵沟壑区 |
Influence of Slope Exposure to Runoff Yield and Sediment Production in loess Hilly and Gully Region |
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| FANG Hai-yan,CAI Qiang-guo,LI Qiu-yan. Influence of Slope Exposure to Runoff Yield and Sediment Production in loess Hilly and Gully Region[J]. Soil and Water Conservation In China, 2011, 0(5): 39-42 |
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| Authors: | FANG Hai-yan CAI Qiang-guo LI Qiu-yan |
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| Affiliation: | FANG Hai-yan1,CAI Qiang-guo1,LI Qiu-yan2(1.Institute of Geographical Sciences and Natural Resources Research,The Chinese Academy of Sciences,Beijing 100101,China,2.Civil Engineering and Water Resources College,China Agriculture University,Beijing 100083,China) |
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| Abstract: | Slope exposure is of an important affecting factor of runoff yield and sediment production of slope surface.The paper conducts a comparative analysis on the conditions of runoff yield and sediment production of sunny slope and shady slope based on 11 events of rainfall happened on sunny sloped farmland and shady sloped wasteland,by taking two runoff plots of sunny slope and shady slope in the Xinzhuang Test Site of the Chaba Watershed on the Loess Plateau as an object of study.The outcomes show that the dif... |
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| Keywords: | slope exposure land use rainfall characteristics runoff yield and sediment production Loess Hilly and Gully Region |
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