The impact of natural polymer derivatives on sheet erosion on experimental loess hillslope
文献类型：期刊论文
| 作者 | Liu, J. E.1,2; Wang, Z. L.2,3; Yang, X. M.2,3; Jiao, N.1,2; Shen, N.1,2; Ji, P. F.4 |
| 刊名 | SOIL & TILLAGE RESEARCH
 |
| 出版日期 | 2014-06-01 |
| 卷号 | 139页码:23-27 |
| 关键词 | Npd Sheet Erosion Runoff Aggregate Shear Strength |
| 文献子类 | Article |
| 英文摘要 | Macromolecular polymers can effectively improve soil structure, increase soil penetration and control runoff and erosion on hillslopes. Simulated rainfall experiments on a bare soil investigated the impact of natural polymer derivatives (NPD) on soil properties and the characteristics of runoff and sediment yield of sheet erosion on experimental loessial hillslopes. A control (without NPD) and three concentrations of polymers (1,3 and 5 g/m(2)) were tested at rainfall intensities of 1, 1.5 and 2 mm/min and a slope gradient of 15 degrees. NPD effectively altered the onset, volume and sediment content of the runoff. Higher concentrations of NPD provided earlier onsets, lower depth and lower sediment contents of the runoff. Compared with control, cumulative runoffs decreased by 49-68%, 61-70% and 69-79% at concentrations of 1,3 and 5 g/m2 NPD, respectively, while cumulative erosion modulus decreased by 31-37%, 39-47%, 56-61%, respectively. Additionally, NPDs significantly increased the shear strength and the composition of aggregates from soil surface. Shear strength was 2.71, 3.24 and 4.01 times higher at 1, 3 and 5 g/m2, respectively, than in the controls. The percent mass of aggregates >0.25 mm increased to 52.5%, 62.65% and 73.0% from 8.9% in the control at the three respective concentrations. More research is needed to confirm the utility of NPDs in helping to control sheet erosion. (c) 2014 Elsevier B.V. All rights reserved. |
| WOS关键词 | SPRINKLER IRRIGATION ; WATER INFILTRATION ; POLYACRYLAMIDE ; SOIL ; RUNOFF ; STABILITY |
| 语种 | 英语 |
| WOS记录号 | WOS:000334989100004 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/68383]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Z. L. |
| 作者单位 | 1.Northwest A&F Univ, Sch Resources & Environm, Yangling 712100, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Peoples R China 4.Solvay Res & Innovat Ctr, Solvay CNRS UMI 3464, Ecoefficient Prod & Proc Lab E2P2L, Shanghai 201108, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, J. E.,Wang, Z. L.,Yang, X. M.,et al. The impact of natural polymer derivatives on sheet erosion on experimental loess hillslope[J]. SOIL & TILLAGE RESEARCH,2014,139:23-27. |
| APA | Liu, J. E.,Wang, Z. L.,Yang, X. M.,Jiao, N.,Shen, N.,&Ji, P. F..(2014).The impact of natural polymer derivatives on sheet erosion on experimental loess hillslope.SOIL & TILLAGE RESEARCH,139,23-27. |
| MLA | Liu, J. E.,et al."The impact of natural polymer derivatives on sheet erosion on experimental loess hillslope".SOIL & TILLAGE RESEARCH 139(2014):23-27. |
入库方式： OAI收割
来源：地理科学与资源研究所
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