Characteristics of runoff processes and nitrogen loss via surface flow and interflow from weathered granite slopes of Southeast China
文献类型：期刊论文
| 作者 | Deng, Long-zhou; Fei, Kai; Sun, Tian-yu; Zhang, Li-ping; Fan, Xiao-juan; Ni, Liang |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2019 |
| 卷号 | 16期号:5页码:1048-1064 |
| 关键词 | Simulated rainfall Nitrogen loss Surface flow Interflow Slope gradient Rainfall intensity Weathered granite slope |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-018-5253-2 |
| 文献子类 | Article |
| 英文摘要 | Rainfall intensity and slope gradient are two of the most important factors affecting the variations of runoff nitrogen (N). However, the effects of slope gradient and rainfall intensity on N loss via surface flow and interflow on weathered granite slopes are poorly understood. In this study, 12 artificial rainfalls (three rainfall intensities and four slope gradients) were simulated to investigate the coupling loss characteristics of surface flow-interflow-total nitrogen (TN), nitrate nitrogen (NO3--N) and ammonia nitrogen (NH4+-N) on weathered granite slopes. The results show that slope gradient has a greater impact on the surface flow when the rainfall intensity is relatively large. The effect gradually weakens with the decrement of rainfall intensity. The interflow yield increases firstly with the prolongation of rainfall duration, then tends to be stable and finally decreases. The total surfaceflow percentage increases with rainfall intensity while it decreases with increasing slope gradient with a range of 10.88%-71.47%. The TN loss concentration of the surface flow continually decreases with rainfall duration while that of the interflow shows different fluctuations. However, the TN loss loads of both surface flow and interflow increase with increasing rainfall intensity and slope gradient. The NO3--N concentration of interflow is much higher than that of the surface flow. The NH4+-N concentration is always less than that of NO3--N with no significant difference between surface flow and interflow. The percentages of the TN, NO3--N, and NH4+-N total loss load and concentration of surface flow and interflow were analyzed. The results show that N loss via both surface flow and interflow occurs mainly in the form of NO3--N. Most of the N loss is caused by interflow which is the preferential path of runoff nutrient loss. These findings provide data support and underlying insights for the control of runoff and N loss on the weathered granite slopes. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| WOS记录号 | WOS:000467121200007 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/46491]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2019_Vol16 No.5 |
| 推荐引用方式 GB/T 7714 | Deng, Long-zhou,Fei, Kai,Sun, Tian-yu,et al. Characteristics of runoff processes and nitrogen loss via surface flow and interflow from weathered granite slopes of Southeast China[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(5):1048-1064. |
| APA | Deng, Long-zhou,Fei, Kai,Sun, Tian-yu,Zhang, Li-ping,Fan, Xiao-juan,&Ni, Liang.(2019).Characteristics of runoff processes and nitrogen loss via surface flow and interflow from weathered granite slopes of Southeast China.JOURNAL OF MOUNTAIN SCIENCE,16(5),1048-1064. |
| MLA | Deng, Long-zhou,et al."Characteristics of runoff processes and nitrogen loss via surface flow and interflow from weathered granite slopes of Southeast China".JOURNAL OF MOUNTAIN SCIENCE 16.5(2019):1048-1064. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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