Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR020187 |
Temporal dynamics in dominant runoff sources and flow paths in the Andean Paramo | |
Correa, Alicia1,2; Windhorst, David2; Tetzlaff, Doerthe3; Crespo, Patricio1; Celleri, Rolando1; Feyen, Jan1; Breuer, Lutz2,4 | |
2017-07-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Ecuador; Germany; Scotland |
英文摘要 | The relative importance of catchment's water provenance and flow paths varies in space and time, complicating the conceptualization of the rainfall-runoff responses. We assessed the temporal dynamics in source areas, flow paths, and age by End Member Mixing Analysis (EMMA), hydrograph separation, and Inverse Transit Time Proxies (ITTPs) estimation within a headwater catchment in the Ecuadorian Andes. Twenty-two solutes, stable isotopes, pH, and electrical conductivity from a stream and 12 potential sources were analyzed. Four end-members were required to satisfactorily represent the hydrological system, i.e., rainfall, spring water, and water from the bottom layers of Histosols and Andosols. Water from Histosols in and near the riparian zone was the highest source contributor to runoff throughout the year (39% for the drier season, 45% for the wetter season), highlighting the importance of the water that is stored in the riparian zone. Spring water contributions to streamflow tripled during the drier season, as evidenced by geochemical signatures that are consistent with deeper flow paths rather than shallow interflow through Andosols. Rainfall exhibited low seasonal variation in this contribution. Hydrograph separation revealed that 94% and 84% is preevent water in the drier and wetter seasons, respectively. From low-flow to high-flow conditions, all the sources increased their contribution except spring water. The relative age of stream water decreased during wetter periods, when the contributing area of the riparian zone expands. The multimethod and multitracer approach enabled to closely study the interchanging importance of flow processes and water source dynamics from an interannual perspective. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000407895000045 |
WOS关键词 | MEAN TRANSIT TIMES ; ELEVATION TROPICAL ECOSYSTEM ; YOUNG WATER FRACTIONS ; HYDROLOGIC CONNECTIVITY ; GROUNDWATER DYNAMICS ; HEADWATER CATCHMENT ; HYDROPEDOLOGICAL UNITS ; HYDROGRAPH SEPARATIONS ; ENVIRONMENTAL SYSTEMS ; TOPOGRAPHIC CONTROLS |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21349 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Cuenca, Fac Ciencias Agr, Fac Ingn, Dept Recursos Hidr & Ciencias Ambientales, Cuenca, Ecuador; 2.Justus Liebig Univ Giessen, Inst Landscape Ecol & Resources Management, Giessen, Germany; 3.Univ Aberdeen, Northern Rivers Inst, Sch Geosci, Aberdeen, Scotland; 4.Justus Liebig Univ Giessen, Ctr Int Dev & Environm Res, Giessen, Germany |
推荐引用方式 GB/T 7714 | Correa, Alicia,Windhorst, David,Tetzlaff, Doerthe,et al. Temporal dynamics in dominant runoff sources and flow paths in the Andean Paramo[J]. WATER RESOURCES RESEARCH,2017,53(7). |
APA | Correa, Alicia.,Windhorst, David.,Tetzlaff, Doerthe.,Crespo, Patricio.,Celleri, Rolando.,...&Breuer, Lutz.(2017).Temporal dynamics in dominant runoff sources and flow paths in the Andean Paramo.WATER RESOURCES RESEARCH,53(7). |
MLA | Correa, Alicia,et al."Temporal dynamics in dominant runoff sources and flow paths in the Andean Paramo".WATER RESOURCES RESEARCH 53.7(2017). |
条目包含的文件 | 条目无相关文件。 |
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