Bank erosion in an Andean paramo river system: Implications for hydro-development and carbon dynamics in the neotropical Andes
文献类型：期刊论文
| 作者 | Martin, Derek J.; Ely, Christopher; Wemple, Beverley C. |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2019 |
| 卷号 | 16期号:2页码:243-255 |
| 关键词 | Bank erosion Paramo Fluvial geomorphology Andes |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-018-5110-3 |
| 文献子类 | Article |
| 英文摘要 | The paramo of the Northern Andes provide critically important ecosystem services to the Northern Andean region in the form of water provisioning and carbon sequestration, both of which are a result of the paramo's organic-rich soils. Little is known, however, about the hydro-geomorphic characteristics of the rivers that drain these ecosystems. With impending plans for widespread hydro-development and increasing implementation of carbon-sequestering compensation for ecosystem services programs in the region it is imperative that we develop a thorough understanding of the hydro-geomorphic role that rivers play in this unique ecosystem. The objective of this study was to quantify bank erosion along an Amazonian headwater stream draining a small, relatively undisturbed paramo catchment to gain a better understanding of the natural erosion regime and the resulting sediment contributions from this unique ecosystem. This study implemented a combination of field, laboratory, and Geographic Information Systems techniques to quantify bank erosion rates and determine a bank erosion sediment yield from the Ningar River, a small paramo catchment (22.7 km(2)) located in the eastern Andean cordillera of Ecuador. Results show that bank erosion rates range from 3.0 to >= 390.0 mm/yr, are highly episodic, and yield at least 487 tons of sediment annually to the Ningar River. These results imply that 1) paramo ecosystems substantially contribute to the sediment load of the Amazon River basin; 2) bank erosion is a potentially significant flux component of basin-scale carbon cycles in paramo ecosystems; and 3) hydrologic alteration campaigns (dam building) will likely critically alter these contributions and concomitantly disconnect a critical source of sediment and nutrients to downstream ecosystems. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| WOS记录号 | WOS:000458657000001 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/46425]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2019_Vol16 No.2 |
| 推荐引用方式 GB/T 7714 | Martin, Derek J.,Ely, Christopher,Wemple, Beverley C.. Bank erosion in an Andean paramo river system: Implications for hydro-development and carbon dynamics in the neotropical Andes[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(2):243-255. |
| APA | Martin, Derek J.,Ely, Christopher,&Wemple, Beverley C..(2019).Bank erosion in an Andean paramo river system: Implications for hydro-development and carbon dynamics in the neotropical Andes.JOURNAL OF MOUNTAIN SCIENCE,16(2),243-255. |
| MLA | Martin, Derek J.,et al."Bank erosion in an Andean paramo river system: Implications for hydro-development and carbon dynamics in the neotropical Andes".JOURNAL OF MOUNTAIN SCIENCE 16.2(2019):243-255. |
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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