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000057155 0247_ $$2DOI$$a10.2134/jeq2006.0368
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000057155 084__ $$2WoS$$aEnvironmental Sciences
000057155 1001_ $$0P:(DE-HGF)0$$aMertens, J.$$b0
000057155 245__ $$aDissolved organic fluxes under bare soil
000057155 260__ $$aMadison, Wis.$$bASA [u.a.]$$c2007
000057155 300__ $$a597 - 606
000057155 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000057155 440_0 $$03300$$aJournal of Environmental Quality$$v36$$x0047-2425
000057155 500__ $$aRecord converted from VDB: 12.11.2012
000057155 520__ $$aThe flux of dissolved organic carbon (DOC) in soil facilitates transport of nutrients and contaminants in soil. There is little information on DOC fluxes and the relationship between DOC concentration and water flux in agricultural soils. The DOC fluxes and concentrations were measured during 2.5 yr using 30 automatic equilibrium tension plate lysimeters (AETPLs) at 0.4 m and 30 AETPLs at 1.20-m depth in a bare luvisol, previously used as an arable soil. Average annual DOC fluxes of the 30 AETPLS were 4.9 g C m(-2) y(-1) at 0.4 m and 2.4 g C m(-2) y(-1) at 1.2 m depth. The average leachate DOC concentrations were 17 mg C L(-1) (0.4 m) and 9 mg C L(-1) (1.2 m). The DOC concentrations were unrelated to soil moisture content or average temperature and rarely dropped below 9 mg C L(-1) (0.4 m) and 5 mg C L(-1) (1.2 m). The variability in cumulative DOC fluxes among the plates was positively related to leachate volume and not to average DOC concentrations at both depths. This suggests that water fluxes are the main determinants of spatial variability in DOC fluxes. However, the largest DOC concentrations were inversely proportional to the mean water velocity between succeeding sampling periods, suggesting that the maximal net DOC mobilization rate in the topsoil is limited. Elevated DOC concentrations, up to 90 mg C L(-1), were only observed at low water velocities, reducing the risks of DOC-facilitated transport of contaminants to groundwater. The study emphasizes that water flux and velocity are important parameters for DOC fluxes and concentrations.
000057155 536__ $$0G:(DE-Juel1)FUEK407$$2G:(DE-HGF)$$aTerrestrische Umwelt$$cP24$$x0
000057155 588__ $$aDataset connected to Web of Science, Pubmed
000057155 650_2 $$2MeSH$$aBromides
000057155 650_2 $$2MeSH$$aCarbon: analysis
000057155 650_2 $$2MeSH$$aSoil: analysis
000057155 650_2 $$2MeSH$$aWater Movements
000057155 650_7 $$00$$2NLM Chemicals$$aBromides
000057155 650_7 $$00$$2NLM Chemicals$$aSoil
000057155 650_7 $$07440-44-0$$2NLM Chemicals$$aCarbon
000057155 650_7 $$2WoSType$$aJ
000057155 7001_ $$0P:(DE-Juel1)129548$$aVanderborght, J.$$b1$$uFZJ
000057155 7001_ $$0P:(DE-Juel1)VDB724$$aKasteel, R.$$b2$$uFZJ
000057155 7001_ $$0P:(DE-Juel1)VDB2346$$aPütz, T.$$b3$$uFZJ
000057155 7001_ $$0P:(DE-HGF)0$$aMerckx, R.$$b4
000057155 7001_ $$0P:(DE-HGF)0$$aFeyen, J.$$b5
000057155 7001_ $$0P:(DE-HGF)0$$aSmolders, E.$$b6
000057155 773__ $$0PERI:(DE-600)2050469-X$$a10.2134/jeq2006.0368$$gVol. 36, p. 597 - 606$$p597 - 606$$q36<597 - 606$$tJournal of environmental quality$$v36$$x0047-2425$$y2007
000057155 8567_ $$uhttp://dx.doi.org/10.2134/jeq2006.0368
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000057155 9141_ $$y2007
000057155 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
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