Variability in runoff fluxes of dissolved and particulate carbon and
nitrogen from two watersheds of different tree species during intense storm
events

Lee, Mi Hee; Payeur-Poirier, Jean-Lionel; Park, Ji‐Hyung; Matzner, Egbert

doi:10.5194/bg-13-5421-2016

Cited by 24 publications

(21 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the Weierbach creek we observed higher SUVA-254 values and DOC concentrations during the low flow periods compared to high flow periods, while Lee et al (2016) and Fasching et al (2016) During those wet conditions, subsurface flow, whose SUVA-254 and DOC signature is represented by the shallow groundwater end-member ( Figure 5), generated a large part of the discharge.…”

Section: Resultsmentioning

confidence: 72%

“…-254 is a suitable proxy for that SUVA-254 is a valid index (Catalán et al, 2013;Fasching et al, 2016;Lee et al, 2016;Weishaar et al, 2003). We valid index of higher terrestrial and SUVA-254 rapidly increased.…”

Section: Resultsmentioning

confidence: 90%

“…For the combinations that included discharge, we generally observed weaker and more heterogeneous relationships (Figure 3 c,e,f and he Weierbach catchment, we are convinced that SUVAidentifying terrestrial DOC in diel DOC fluctuations. Several studies already demonstrated that SUVA (Catalán et al, 2013;Fasching et al, 2016;Lee et al, 2016;Weishaar et al catchment for rising SUVA-254 values serving as a valid index Immediately after rain events, discharge, DOC concentrations and SUVA surface or near-surface runoff processes (Glaser et al, 2016;Klaus et al, 2015) the increase in DOC concentrations was induced by terrestrial DOC input that s on processes controlling diel DOC fluctuations. For the days with diel fluctu generally observed both DOC and SUVA-254 maxima in the afternoon.…”

Section: Resultsmentioning

confidence: 99%

“…Dissolved organic matter (DOM) is a major constituent of the carbon cycle and aquatic biogeochemistry, eventually linking terrestrial and aquatic ecosystems (Battin et al, 2008;Lee et al, 2016;Saraceno et al, 2009). The largest component of DOM in forested stream ecosystems is dissolved organic carbon (DOC) (McLaughlin and Kaplan, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Hood et al (2006) observed an increase of SUVA-254 during a 6-day storm event in three catchments of the H.J Andrews Experimental Forest, Oregon (USA) and suggested SUVA-254 as a useful tracer for identifying different flowpaths through mineral soils. Also at HJ Andrews, Lee et al (2016) Diel DOC fluctuations in streams are generally explained by a complex interplay of different instream processes. They cannot be observed in every stream, but when they occur, DOC concentrations are often increasing during daytime and decreasing at night (Nimick et al, 2011 and reference therein).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Diel fluctuations of viscosity-driven riparian inflow affect streamflow DOC concentration

Schwab

Klaus

Pfister

et al. 2017

Preprint

View full text Add to dashboard Cite

Abstract. Diel fluctuations of streamwater DOC concentrations are generally explained by a complex interplay of different instream processes. We measured the light absorption spectrum of water and DOC concentrations in-situ and with highfrequency by means of a UV-Vis spectrometer during 18 months at the outlet of a forested headwater catchment in 10 Luxembourg (0.45 km 2 ). We generally observed diel DOC fluctuations with a maximum in the afternoon during days thatwere not affected by rainfall-runoff events. We identified an increased inflow of terrestrial DOC to the stream in the afternoon, causing the DOC maxima in the stream. The terrestrial origin of the DOC was derived from the SUVA-254(specific UV absorbance at 254 nm) index, which is a good indicator for the aromaticity of DOC. In the studied catchment, the only possible process that can explain the diel DOC input variations towards the stream is the so-called viscosity effect. 15The water temperature in the upper parts of the riparian zone is increasing during the day, leading to a lower viscosity and therefore a higher hydraulic conductivity. Consequently, more water from areas that are rich in terrestrial DOC passes through the riparian zone and contributes to streamflow in the afternoon. We believe that not only diel instream processes, but also viscosity driven diel fluctuations of terrestrial DOC input should be considered for explaining diel DOC patterns in streams. 20Biogeosciences Discuss., https://doi

show abstract

Section: Resultsmentioning

confidence: 72%

Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Diel fluctuations of viscosity-driven riparian inflow affect streamflow DOC concentration

Schwab

Klaus

Pfister

et al. 2017

Preprint

View full text Add to dashboard Cite

show abstract

A Global Data Analysis for Representing Sediment and Particulate Organic Carbon Yield in Earth System Models

Tan

Leung

et al. 2017

Water Resources Research

View full text Add to dashboard Cite

Although sediment yield (SY) from water erosion is ubiquitous and its environmental consequences are well recognized, its impacts on the global carbon cycle remain largely uncertain. This knowledge gap is partly due to the lack of soil erosion modeling in Earth System Models (ESMs), which are important tools used to understand the global carbon cycle and explore its changes. This study analyzed sediment and particulate organic carbon yield (CY) data from 1,081 and 38 small catchments (0.1–200 km2), respectively, in different environments across the globe. Using multiple statistical analysis techniques, we explored environmental factors and hydrological processes important for SY and CY modeling in ESMs. Our results show clear correlations of high SY with traditional agriculture, seismicity and heavy storms, as well as strong correlations between SY and annual peak runoff. These highlight the potential limitation of SY models that represent only interrill and rill erosion because shallow overland flow and rill flow have limited transport capacity due to their hydraulic geometry to produce high SY. Further, our results suggest that SY modeling in ESMs should be implemented at the event scale to produce the catastrophic mass transport during episodic events. Several environmental factors such as seismicity and land management that are often not considered in current catchment‐scale SY models can be important in controlling global SY. Our analyses show that SY is likely the primary control on CY in small catchments and a statistically significant empirical relationship is established to calculate SY and CY jointly in ESMs.

show abstract

Effects of cornstalk mulching and rainfall intensity on the quantity and quality of dissolved organic carbon in runoff: A field rainfall simulation at the plot scale

Liang

et al. 2023

Land Degrad Dev

View full text Add to dashboard Cite

Underscoring how crop mulching changes the dissolved organic carbon (DOC) in runoff is essential to understanding the sustainable application of cornstalk mulching. This study examined the runoff DOC quantity and quality in plots with and without cornstalk mulching under various rainfall intensities in a representative steep fallow land of southwestern China. Field rainfall simulations within a 60 min duration were conducted on the triplet plots (1.5 m × 1 m for a single plot) with bare soils under 30‐ and 90‐mm h−1 intensities and with cornstalk mulching (air‐dried whole plants with 60% coverage and weight 1.65 kg per plot) under 90 mm h−1 intensity, respectively. The concentration and loss of runoff DOC and its quality variables, including SUVA254 (aromaticity of DOC), C:C (proportion of colored humic substances in DOC), and E4:E6 (fulvic acid to humic acid in DOC), are determined. Results showed that runoff DOC concentration and loss were both significantly higher at 90 mm h−1 intensity than at 30 mm h−1 intensity (p < 0.05), simultaneously, they were 52.6% and 53.2% higher in mulched plots than in bare plots (p < 0.05), respectively. Runoff SUVA254 and C:C in bare plots were 90% and 88.9% higher in 30 mm h−1 intensity than in 90 mm h−1 intensity (p < 0.05), respectively. Whereas, E4:E6 of runoff was 12.3% higher in mulched plots than that in bare plots (p < 0.05). Our findings imply that cornstalk mulching enhances the export of runoff DOC with a decline in aromaticity and the molecular weight of humic substances.

show abstract

Variability in runoff fluxes of dissolved and particulate carbon and nitrogen from two watersheds of different tree species during intense storm events

Cited by 24 publications

References 53 publications

Diel fluctuations of viscosity-driven riparian inflow affect streamflow DOC concentration

Diel fluctuations of viscosity-driven riparian inflow affect streamflow DOC concentration

A Global Data Analysis for Representing Sediment and Particulate Organic Carbon Yield in Earth System Models

Effects of cornstalk mulching and rainfall intensity on the quantity and quality of dissolved organic carbon in runoff: A field rainfall simulation at the plot scale

Contact Info

Product

Resources

About