| 坡度和刺槐覆盖对黄土坡面产流产沙影响的模拟降雨研究 |
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| 引用本文： | 宋维峰,余新晓,张颖. 坡度和刺槐覆盖对黄土坡面产流产沙影响的模拟降雨研究[J]. 中国水土保持科学, 2008, 6(2): 15-18 |
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| 作者姓名： | 宋维峰 余新晓 张颖 |
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| 作者单位： | 1. 西南林学院环境科学与工程系,650224,昆明
2. 北京林业大学水土保持学院,100083,北京 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) , 国家自然科学基金 |
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| 摘 要： | 选用处于黄土高原的山西省吉县蔡家川刺槐覆盖坡面的表层土壤,栽植刺槐幼林后进行人工降雨模拟试验,对比研究不同坡度对刺槐覆盖坡面和裸露坡面的产流和侵蚀产沙的影响。结果表明:当降雨强度一定时,在一定的坡度范围内,随着坡度增加,开始产流时间提前,径流的速度加快,树冠截留率减小,径流量增大,侵蚀量、含沙量增加;刺槐林树冠截留率与坡度的关系为I=29.556α-0.311（R2=0.9874）;刺槐覆盖坡面侵蚀量与坡度之间的关系为W=0.116 84α3.005 9（R2=0.9795）;同一坡度条件下,裸露坡面比刺槐覆盖坡面径流平均速度高15%～25%,径流量高15%～48%,侵蚀量高10%～117%,平均含沙量高55.5%～133.0%。
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| 关 键 词： | 坡度 刺槐 产流产沙 黄土高原 |
| 修稿时间： | 2007-08-27 |
Effects of slope grade and cover of Robinia pseudoacacia on runoff and soil loss from loess slopes under simulated rainfall |
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| Song Weifeng,Yu Xinxiao,Zhang Ying. Effects of slope grade and cover of Robinia pseudoacacia on runoff and soil loss from loess slopes under simulated rainfall[J]. Science of Soil and Water Conservation, 2008, 6(2): 15-18 |
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| Authors: | Song Weifeng Yu Xinxiao Zhang Ying |
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| Affiliation: | Song Weifeng1,Yu Xinxiao2,Zhang Ying2(1.Department of Environmental Science , Engineering,Southwest Forestry College,650224,Kunming,2.College of Water , Soil Conservation,Beijing Forestry University,100083,Beijing: China) |
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| Abstract: | The experiment of simulated rainfall was carried out by using the soil taken from the artificial forest of Robinia pseudoacacia from Caijiachuan of Jixian County of Shanxi Province in the Loess Plateau.The young trees of Robinia pseudoacacia were planted as a vegetation cover for the experiment slopes.The amount of runoff and soil erosion was collected from slopes of different slope grades with the cover of Robinia pseudoacacia.The results showed that under a given condition of certain rainfall intensity an... |
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| Keywords: | slope grade Robinia pseudoacacia plantation runoff and soil loss Loess Plateau |
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