The contributions of the roots, stems, and leaves of three grass species to water erosion reduction on spoil heaps
文献类型：期刊论文
| 作者 | Li, Jianming2,3,4,5; Li, Li2,3; Wang, Zhigang2,3; Zhang, Changwei2,3; Wang, Yifeng2,3; Wang, Wenlong1,4; Zhang, Guanhua2,3; Huang, Jinquan2,3; Li, Hao2,3; Lv, Xingdong2,3 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 603页码:13 |
| ISSN号 | 0022-1694 |
| 关键词 | Spoil heaps Rainfall simulation Grass recovery Taproot and fibrous root Vegetation components Shear stress |
| DOI | 10.1016/j.jhydrol.2021.127003 |
| 通讯作者 | Wang, Zhigang(wzg_cky2010@126.com) |
| 英文摘要 | Soil erosion on spoil heaps is one of the global environmental issues, where grass recovery is often implemented. However, information regarding how the erosion processes and control efficiency on spoil heaps differ as functions of grass types and components is lacking. In this study, a series of artificial rainfalls (48, 72, and 108 mm h(-1)) were conducted on eight plots (each one was replicated) that were established on steep spoil heaps and treated with three different grass types (Artemisia gmelinii (AG), Medicago sativa (MS), and Cynodon dactylon (CD)), with measurements of the runoff generation, sediment yield, and runoff velocity. Bare plot (BS) was set up as a control. Three scenarios regarding erosion efficiencies that by intact grass (IG), a combination of grass stems and roots (NL), and only grass root (OR), were considered. The results showed: 1) grass recovery can significantly reduce soil loss rate (SLR) on spoil heaps up to 99%, and there was no significant difference in erosion reduction efficiency between grasses with a taproot (AG: 93%) and fibrous root (MS: 92%; CD: 89%) systems under the IG treatments (P > 0.05); 2) The effect of the different grass treatments on SLR reduction depended on the rainfall intensity. The contribution rate of roots to SLR reduction was 68%-90% at a rainfall intensity of 48 mm h(-1), while the stem and leaf contribution rates were 39%-156% at intensities of 72 and 108 mm h(-1), respectively. While incomplete grass even increased the SLR, especially in the OR treatment, where the contribution rate of root to SLR reduction was -2%- -68%. 3) The IG treatment reduced soil erodibility (K-r) by 81.43%-83.80%, while the K-r values of the OR treatment were 1.51-3.53 times greater, as compared to the BS plots. In most cases, the critical shear stress (tau(c)) on the grass plots was 1.09-2.14 times greater than those in the BS plots. These results would guide the selection of grass species for controlling spoil heaps erosion, also highlight the necessity of maintaining grass to maximize its control efficiency. |
| WOS关键词 | CONCENTRATED FLOW EROSION ; CRITICAL SHEAR-STRESS ; ROCK FRAGMENT CONTENT ; SOIL-EROSION ; LOESS PLATEAU ; SEDIMENT YIELD ; SURFACE RUNOFF ; PLANT-ROOTS ; IMPACT ; TILLAGE |
| 资助项目 | National Key Research and Developmental Program of China[2018YFC0407602] ; National Key Research and Developmental Program of China[2016YFC0502300] ; Natural Science Foundation of China[41701316] ; Natural Science Foundation of China[41877082] ; Natural Science Foundation of China[42077062] ; Central Non-profit Scientific Research Fund for Institutes[CKSF2021447/TB] ; Central Non-profit Scientific Research Fund for Institutes[CKSF2021487/TB] ; Central Non-profit Scientific Research Fund for Institutes[CKSF2019170/TB] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000706318300074 |
| 资助机构 | National Key Research and Developmental Program of China ; Natural Science Foundation of China ; Central Non-profit Scientific Research Fund for Institutes |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/167086]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Zhigang |
| 作者单位 | 1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Changjiang Water Resources Commiss, Changjiang River Sci Res Inst, Wuhan 430010, Peoples R China 3.Minist Water Resources, Res Ctr Mt Torrent & Geol Disaster Prevent, Wuhan 430010, Peoples R China 4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Jianming,Li, Li,Wang, Zhigang,et al. The contributions of the roots, stems, and leaves of three grass species to water erosion reduction on spoil heaps[J]. JOURNAL OF HYDROLOGY,2021,603:13. |
| APA | Li, Jianming.,Li, Li.,Wang, Zhigang.,Zhang, Changwei.,Wang, Yifeng.,...&Liu, Jigen.(2021).The contributions of the roots, stems, and leaves of three grass species to water erosion reduction on spoil heaps.JOURNAL OF HYDROLOGY,603,13. |
| MLA | Li, Jianming,et al."The contributions of the roots, stems, and leaves of three grass species to water erosion reduction on spoil heaps".JOURNAL OF HYDROLOGY 603(2021):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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