Effects of nitrogen addition on the soil detachment in the typical grasslands of the Loess Plateau
文献类型：期刊论文
| 作者 | Li, Pan-pan2; Wang, Bing1,2; Yang, Yan-fen1,2; Liu, Guo-bin1,2 |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 19期号:12页码:3503-3516 |
| ISSN号 | 1672-6316 |
| 关键词 | Nitrogen deposition Root traits Soil properties Soil detachment Grassland Loess Plateau |
| DOI | 10.1007/s11629-022-7543-y |
| 通讯作者 | Yang, Yan-fen(yfyang@ms.iswc.ac.cn) |
| 英文摘要 | Nitrogen deposition will alleviate the nitrogen limitation in terrestrial ecosystems and greatly affect vegetation growth, thereby soil erosion. It is important to clarify the effects of nitrogen addition to the plant roots and soil properties on the soil erosion process. A nitrogen addition experiment was conducted in the grassland dominated by Bothriochloa ischaemum (Linn.) Keng (BI), which has received 0, 2.5, 5, and 10 g N m(-2) yr(-1) (N-0, N-2.5, N-5 and N-10, respectively) for three consecutive years. Then, a total of 150 undisturbed soil samples were collected (including bare soil control) and subjected to flowing water to test their soil detachment capacities under six shear stress levels (10.2 Pa to 29.9 Pa). Three-year nitrogen addition increased the soil bulk density, soil cohesion and nitrate nitrogen while decreasing the saturated hydraulic conductivity, soil water-stable aggregates, soil organic carbon, total nitrogen and ammonium nitrogen. The root mass density and root diameter decreased with nitrogen addition. And the root length, surface area and volume density of the N-0 and N-5 treatments were larger than those of the other treatments, while the plant roots were significantly inhibited by N-10. Additionally, the soil detachment capacity (D-c) and rill erodibility (K-r) of the N-0 and N-5 treatments were significantly less than those of the N-2.5 and N-10 treatments, of which the D-c (0.020 kg m(-2) s(-1)) of the N-0 treatment was 69.0%, 24.3% and 66.8% less than that of the N-2.5, N-5 and N-10 treatments, respectively. The K-r of the N-0 treatment was 0.0012 s m(-1), which was 72.1%, 25.0% and 70.0% less than that of the others. This study implies that an increase in nitrogen addition likely exacerbates soil erosion in the early (approximately 2.5 g N m(-2) yr(-1)) and late phases (more than 10 g N m(-2) yr(-1)). However, when the nitrogen addition rate is approximately 5 g m(-2) yr(-1), soil erosion may be inhibited because of the responses of the plant roots and soil to nitrogen addition. |
| WOS关键词 | OVERLAND-FLOW ; ABOVEGROUND BIOMASS ; CONCENTRATED FLOW ; ROOT ; DEPOSITION ; CAPACITY ; CARBON ; EROSION ; GROWTH ; STABILIZATION |
| 资助项目 | National Natural Science Foundation of China[41771555] ; National Natural Science Foundation of China[41530858] ; CAS Youth Scholar of West China Program[XAB2019A04] ; Innovation Capability Support Program of Shaanxi[2022PT-23] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000898090200011 |
| 资助机构 | National Natural Science Foundation of China ; CAS Youth Scholar of West China Program ; Innovation Capability Support Program of Shaanxi |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/188837]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Yang, Yan-fen |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess Pl, Yangling 712100, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess Pl, Yangling 712100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Pan-pan,Wang, Bing,Yang, Yan-fen,et al. Effects of nitrogen addition on the soil detachment in the typical grasslands of the Loess Plateau[J]. JOURNAL OF MOUNTAIN SCIENCE,2022,19(12):3503-3516. |
| APA | Li, Pan-pan,Wang, Bing,Yang, Yan-fen,&Liu, Guo-bin.(2022).Effects of nitrogen addition on the soil detachment in the typical grasslands of the Loess Plateau.JOURNAL OF MOUNTAIN SCIENCE,19(12),3503-3516. |
| MLA | Li, Pan-pan,et al."Effects of nitrogen addition on the soil detachment in the typical grasslands of the Loess Plateau".JOURNAL OF MOUNTAIN SCIENCE 19.12(2022):3503-3516. |
入库方式： OAI收割
来源：地理科学与资源研究所
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