Effect of shrub-grass vegetation coverage and slope gradient on runoff and sediment yield under simulated rainfall
文献类型：期刊论文
| 作者 | Han, Dandan1,3; Deng, Jingcheng2; Gu, Chaojun4; Mu, Xingmin1,2; Gao, Peng1,2; Gao, Jianjian5 |
| 刊名 | INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
 |
| 出版日期 | 2021-02-01 |
| 卷号 | 36期号:1页码:29-37 |
| 关键词 | Simulated rainfall Shrub-grass coverage Slope Runoff and sediment yield |
| ISSN号 | 1001-6279 |
| DOI | 10.1016/j.ijsrc.2020.05.004 |
| 通讯作者 | Gao, Peng(gaopeng@ms.iswc.ac.cn) |
| 英文摘要 | Evaluating the benefits of sediment and runoff reduction in different vegetation types is essential for studying the mechanisms of soil and water conservation on the Loess Plateau. The experiment was conducted in shrub-grass plots with nine levels of mixed vegetation coverage from 0% to 70%, three slopes (10 degrees,15 degrees, and 20 degrees) and two rainfall intensities (1.0 and 2.5 mm/min). The results showed that the vegetation coverage and slope gradient significantly affect runoff and sediment yield. Shrub-grass vegetation coverage had a significant effect on the runoff start-time, runoff flow velocity, runoff rate, and soil erosion rate on hillslopes. Mixed vegetation coverage could effectively delay the runoff starttime and decrease the runoff flow velocity. However, the effects of the slope gradient on runoff and sediment yield are opposite to those of vegetation coverage. Shrub-grass vegetation coverage could effectively increase runoff and sediment yield reduction benefits, while their benefits were affected by the rainfall intensity. At the 1.0 mm/min rainfall intensity, the reduction in the sediment production rate was greater than that under the 2.5 mm/min intensity. However, when the shrub-grass vegetation coverage exceeded 42%, the runoff reduction benefit was more obvious at higher rainfall intensities. The cumulative sediment yield increased with increasing cumulative runoff, and the rate of increase in the cumulative runoff was greater than that of the cumulative sediment yield with increasing of shrub-grass vegetation coverage. Moreover, there was a power function relationship between cumulative sediment yield and cumulative runoff yield (P < 0.05). Our paper is expected to provide a good reference on the ecological environment and vegetation construction on the Loess Plateau. (C) 2020 International Research and Training Centre on Erosion and Sedimentation/the World Association for Sedimentation and Erosion Research. Published by Elsevier B.V. All rights reserved. |
| WOS关键词 | SOIL-EROSION ; LOESS PLATEAU ; HYDRAULIC CHARACTERISTICS ; SURFACE RUNOFF ; LAND ; GENERATION ; IMPACTS ; REGION ; AREA ; FLOW |
| 资助项目 | National Key Research and Development Program of China[2016YFC0501707] ; Science and Technology Basic Work of China[2014FY210100] ; Special Funds for Scientific Research Programs of the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021403-Q2] |
| WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000590413200003 |
| 出版者 | IRTCES |
| 资助机构 | National Key Research and Development Program of China ; Science and Technology Basic Work of China ; Special Funds for Scientific Research Programs of the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/136959]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Gao, Peng |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Agr Loess Plate, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Agr Loess Plate, Yangling 712100, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100000, Peoples R China 4.Changjiang Water Resources Commiss, Yangtze River Basin Monitoring Ctr Stn Soil & Wat, Wuhan 430012, Hubei, Peoples R China 5.Minist Water Resources, Yellow River Conservancy Comm, Suide Test Stn Water & Soil Conservat, Yulin 719000, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, Dandan,Deng, Jingcheng,Gu, Chaojun,et al. Effect of shrub-grass vegetation coverage and slope gradient on runoff and sediment yield under simulated rainfall[J]. INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH,2021,36(1):29-37. |
| APA | Han, Dandan,Deng, Jingcheng,Gu, Chaojun,Mu, Xingmin,Gao, Peng,&Gao, Jianjian.(2021).Effect of shrub-grass vegetation coverage and slope gradient on runoff and sediment yield under simulated rainfall.INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH,36(1),29-37. |
| MLA | Han, Dandan,et al."Effect of shrub-grass vegetation coverage and slope gradient on runoff and sediment yield under simulated rainfall".INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH 36.1(2021):29-37. |
入库方式： OAI收割
来源：地理科学与资源研究所
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