Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL072630 |
Emergent archetype patterns of coupled hydrologic and biogeochemical responses in catchments | |
Musolff, A.1; Fleckenstein, J. H.1; Rao, P. S. C.2,3; Jawitz, J. W.4 | |
2017-05-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; USA |
英文摘要 | Relationships between in-stream dissolved solute concentrations (C) and discharge (Q) are useful indicators of catchment-scale processes. We combine a synthesis of observational records with a parsimonious stochastic modeling approach to test how C-Q relationships arise from spatial heterogeneity in catchment solute sources coupled with different timescales of reactions. Our model indicates that the dominant driver of emergent archetypical dilution, enrichment, and constant C-Q patterns was structured heterogeneity of solute sources implemented as correlation of source concentration to travel time. Regardless of the C-Q pattern, with weak correlation between solute-source concentration and travel time, we consistently find lower variability in C than in Q, such that the predominant solute export regime is chemostatic. Consequently, the variance in exported loads is determined primarily by variance of Q. Efforts to improve stream water quality and ecological integrity in intensely managed catchments should lead away from landscape homogenization by introducing structured source heterogeneity. |
英文关键词 | catchment chemostatic export solute export water quality biogeochemistry water travel times |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000402143700022 |
WOS关键词 | CONCENTRATION-DISCHARGE RELATIONSHIPS ; DISSOLVED ORGANIC-CARBON ; TIME DISTRIBUTIONS ; RESIDENCE TIME ; WATER ; DYNAMICS ; STREAMS ; EXPORT ; RIVER ; VARIABILITY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/27695 |
专题 | 气候变化 |
作者单位 | 1.UFZ Helmholtz Ctr Environm Res, Dept Hydrogeol, Leipzig, Germany; 2.Purdue Univ, Lyles Sch Civil Engn, W Lafayette, IN 47907 USA; 3.Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA; 4.Univ Florida, Soil & Water Sci Dept, Gainesville, FL USA |
推荐引用方式 GB/T 7714 | Musolff, A.,Fleckenstein, J. H.,Rao, P. S. C.,et al. Emergent archetype patterns of coupled hydrologic and biogeochemical responses in catchments[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(9). |
APA | Musolff, A.,Fleckenstein, J. H.,Rao, P. S. C.,&Jawitz, J. W..(2017).Emergent archetype patterns of coupled hydrologic and biogeochemical responses in catchments.GEOPHYSICAL RESEARCH LETTERS,44(9). |
MLA | Musolff, A.,et al."Emergent archetype patterns of coupled hydrologic and biogeochemical responses in catchments".GEOPHYSICAL RESEARCH LETTERS 44.9(2017). |
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