Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR019635 |
Elemental properties, hydrology, and biology interact to shape concentration-discharge curves for carbon, nutrients, sediment, and major ions | |
Moatar, F.1; Abbott, B. W.2,3; Minaudo, C.1; Curie, F.1; Pinay, G.2 | |
2017-02-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | France; USA |
英文摘要 | To investigate the prevalence and cause of concentration-discharge (C-Q) relationships for carbon, nutrients, major ions, and particulates, we analyzed 40 years of water quality data from 293 monitoring stations in France. Catchments drained diverse landscapes and ranged from 50 to 110,000 km2, together covering nearly half of France. To test for differences during low and high flows, we calculated independent C-Q slopes above and below the median discharge. We found that 84% of all catchment-element combinations were chemodynamic for at least half of the hydrograph and 60% of combinations showed nonlinear C-Q curves. Only two or three of the nine possible C-Q modalities were manifest for each parameter, and these modalities were stable through time, suggesting that intrinsic and extrinsic elemental properties (e. g., solubility, reactivity, and source dynamics) set basic C-Q templates for each parameter, which are secondarily influenced by biological activity during low flows, and the interaction between hydrology and catchment characteristics at high flows. Several patterns challenged current C-Q views, including low-flow chemostasis for TSS in 66% of catchments, low-flow biological mediation of NO23 in 71% of catchments, and positive C-Q for dissolved organic carbon independent of catchment size in 80% of catchments. Efforts to reduce nutrient loading decreased phosphorus concentration and altered C-Q curves, but NO23 continued to increase. While C-Q segmentation requires more data than a single analysis, the prevalence of nonlinear C-Q slopes demonstrates the potential information loss associated with linear or monotonic analysis of C-Q relationships, and conversely, the value of long-term monitoring. |
英文关键词 | water quality source limitation transport limitation chemostatic chemodynamic catchment |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000398568800015 |
WOS关键词 | DISSOLVED ORGANIC-CARBON ; TOTAL SUSPENDED-SOLIDS ; TIME-SERIES ; LOIRE RIVER ; AGRICULTURAL CATCHMENTS ; SAMPLING FREQUENCY ; HEADWATER STREAMS ; WATER CHEMISTRY ; LOAD ESTIMATION ; SURFACE-WATER |
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/21738 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Francois Rabelais Tours, EA Geohydrosyst Continentaux 6293, Parc Grandmont, Tours, France; 2.Univ Rennes 1, OSUR ECOBIO CNRS, Campus Beaulieu,Ave Gen Leclerc, Rennes, France; 3.Michigan State Univ, Dept Earth & Environm Sci, E Lansing, MI 48824 USA |
推荐引用方式 GB/T 7714 | Moatar, F.,Abbott, B. W.,Minaudo, C.,et al. Elemental properties, hydrology, and biology interact to shape concentration-discharge curves for carbon, nutrients, sediment, and major ions[J]. WATER RESOURCES RESEARCH,2017,53(2). |
APA | Moatar, F.,Abbott, B. W.,Minaudo, C.,Curie, F.,&Pinay, G..(2017).Elemental properties, hydrology, and biology interact to shape concentration-discharge curves for carbon, nutrients, sediment, and major ions.WATER RESOURCES RESEARCH,53(2). |
MLA | Moatar, F.,et al."Elemental properties, hydrology, and biology interact to shape concentration-discharge curves for carbon, nutrients, sediment, and major ions".WATER RESOURCES RESEARCH 53.2(2017). |
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