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Riparian zone hydro...
Riparian zone hydrology and soil water total organic carbon (TOC) : implications for spatial variability and upscaling of lateral riparian TOC exports
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- Grabs, Thomas (författare)
- Stockholms universitet,Uppsala universitet,Luft-, vatten- och landskapslära,Institutionen för naturgeografi och kvartärgeologi (INK)
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- Bishop, Kevin (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Uppsala universitet,Luft-, vatten- och landskapslära,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment
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- Laudon, Hjalmar (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skogens ekologi och skötsel,Department of Forest Ecology and Management,Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, Sweden
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- Lyon, Steve W. (författare)
- Stockholms universitet,Institutionen för naturgeografi och kvartärgeologi (INK),Department of Physical Geography and Quaternary Geology, Stockholm University, Stockholm, Sweden
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- Seibert, Jan (författare)
- Stockholms universitet,Uppsala universitet,Luft-, vatten- och landskapslära,Institutionen för naturgeografi och kvartärgeologi (INK)
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(creator_code:org_t)
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- 2012-10-10
- 2012
- Engelska.
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Ingår i: Biogeosciences. - : Copernicus GmbH. - 1726-4170 .- 1726-4189. ; 9:10, s. 3901-3916
- Relaterad länk:
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https://www.biogeosc...
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https://pub.epsilon.... (primary) (Raw object) (free)
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https://doi.org/10.5...
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https://urn.kb.se/re...
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https://doi.org/10.5...
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https://res.slu.se/i...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Groundwater flowing from hillslopes through riparian (near-stream) soils often undergoes chemical transformations that can substantially influence stream water chemistry. We used landscape analysis to predict total organic carbon (TOC) concentration profiles and groundwater levels measured in the riparian zone (RZ) of a 67 km2 catchment in Sweden. TOC exported laterally from 13 riparian soil profiles was then estimated based on the riparian flow-concentration integration model (RIM). Much of the observed spatial variability of riparian TOC concentrations in this system could be predicted from groundwater levels and the topographic wetness index (TWI). Organic riparian peat soils in forested areas emerged as hotspots exporting large amounts of TOC. These TOC fluxes were subject to considerable temporal variations caused by a combination of variable flow conditions and changing soil water TOC concentrations. Mineral riparian gley soils, on the other hand, were related to rather small TOC export rates and were characterized by relatively time-invariant TOC concentration profiles. Organic and mineral soils in RZs constitute a heterogeneous landscape mosaic that potentially controls much of the spatial variability of stream water TOC. We developed an empirical regression model based on the TWI to move beyond the plot scale and to predict spatially variable riparian TOC concentration profiles for RZs underlain by glacial till.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Multidisciplinär geovetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geosciences, Multidisciplinary (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Nyckelord
- catchment
- chemical alteration
- concentration (composition)
- Gleysol
- groundwater flow
- groundwater-surface water interaction
- heterogeneity
- numerical model
- peat soil
- regression analysis
- riparian zone
- soil profile
- soil water
- spatial variation
- streamwater
- till
- total organic carbon
- upscaling
- water chemistry
- water level
- Sweden
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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