Spatial Variability and Temporal Persistence of Event Runoff Coefficients for Cropland Hillslopes

Chen, Bo; Krajewski, Witold F.; Helmers, Matthew J.; Zhang, Zhuodong

doi:10.1029/2018wr023576

Cited by 22 publications

(11 citation statements)

References 53 publications

(105 reference statements)

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“…Runoff coefficient ranged from 0.001 to 0.08 in the current study. Surprisingly, runoff coefficient was very low compared with other studies both at the cropland hillslope scale ranging from 0.29 to 1.46 reported by Chen et al (2019) and in the catchment scale ranging from 0.01 to 0.37 determined by Guastini et al (2019). It is anticipated that one of the main reasons for this pronounced difference is that forest residuals such as tree limbs, tops, and foliage left on the skid trails can increase the ground surface roughness and thereby create a b Runoff (mm) Runoff (mm) Fig.…”

Section: Runoffcontrasting

confidence: 67%

Effects of plot length and soil texture on runoff and sediment yield occurring on machine-trafficked soils in a mixed deciduous forest

Jourgholami

Labelle

2020

Annals of Forest Science

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& Key message Runoff decreased significantly in each soil texture group, as plot length increased (2-40 m), whereas sediment yield showed an increasing trend. Runoff and sediment yield were higher in the clayey soil than in the loamy soil texture. & Context An important issue for decreasing the negative impact of ground-based skidding operations on the physical environment is the appropriate drainage of the surface flow away from the skid trail to decrease runoff and subsequent soil loss. Water diversion structures can be used to disperse the water from the trail to the stand but information on adequate spacing is lacking, especially when considering machine-trafficked forest soils. & Aims The objective of this study was to quantify the effects of plot length (2, 5, 10, 20, 30, and 40 m) and two soil texture types (clayey and loamy) on runoff and sediment yield in skid trails in a mixed deciduous forest in order to determine the ideal spacing between adjacent water diversion structures. & Methods Runoff and sediment yield were measured for 25 rainfall events occurring over a 6-month period. The Pearson correlation was applied to determine the relationship among runoff, sediment yield, selected soil properties, plot length, soil texture, and canopy cover. In each soil texture group, runoff and sediment were plotted with rainfall intensity and plot length by a Gaussian polynomial regression model. & Results Results show that plot length and soil texture significantly affected the amount of runoff and sediment yield. Plot length was positively and significantly correlated with sediment yield and negatively correlated with runoff. The highest runoff was found on the plot length of 2 m under clay soil by 1.49 mm followed by plot length of 5 m with clay by 1.15 mm and plot length of 2 m with loamy soil by 1.03 mm. In both soil texture classes, the runoff decreased significantly, as plot length increased. Likewise, in each plot length tested, the values of runoff were higher in the clayey soil than in the loamy soil texture. Significantly higher values of sediment yield were found in the plot length of 40 m and 30 m under the clayey soil (8.63 g m −2 and 6.84 g m −2 ) followed by plot length of 40 m under loamy soil (6.15 g m −2 ). In each soil texture, sediment yield increased significantly, as plot length increased. Additionally, in each plot length, sediment yield was higher in the clayey soil than in the loamy soil texture. & Conclusion The results of this study can be applied to mitigate the environmental impacts of ground-based skidding operations on skid trails and to determine the optimal distance of water diversion structure.

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Section: Runoffcontrasting

confidence: 67%

Effects of plot length and soil texture on runoff and sediment yield occurring on machine-trafficked soils in a mixed deciduous forest

Jourgholami

Labelle

2020

Annals of Forest Science

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“…For example, Cerdan et al (2004) found mean Rc and σ of 0.05 and 0.045, respectively, for 90 ha catchment in Normandy or Tachecí et al (2013) found the Rc between 0.03 and 0.06 in 0.6 km 2 catchment in the Czech Republic. The magnitude of Rc in HOAL is smaller than what was found on cropland hillslopes in central Iowa (Chen et al 2019) where the median over 70 events was 0.22, or as reported in regional assessments of mesoscale catchments in Austria (the median of Rc varies between 0.18 and 0.43, Merz et al 2006) or Germany (Tarasova et al 2018b). The magnitude of Rc is not related to size or surface slope of sub-catchments in HOAL, which is similar as reported in previous studies of Chen et al (2019) or Cerdan et al (2004).…”

Section: Spatial and Seasonal Variability Of Event Runoff Characteriscontrasting

confidence: 63%

“…The magnitude of Rc in HOAL is smaller than what was found on cropland hillslopes in central Iowa (Chen et al . 2019 ) where the median over 70 events was 0.22, or as reported in regional assessments of mesoscale catchments in Austria (the median of Rc varies between 0.18 and 0.43, Merz et al . 2006 ) or Germany (Tarasova et al .…”

Section: Discussionmentioning

confidence: 90%

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Spatial and temporal variability of event runoff characteristics in a small agricultural catchment

Chen

Parajka

Széles

et al. 2020

Hydrological Sciences Journal

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The objective of this study is to investigate the factors that control event runoff characteristics at the small catchment scale. The study area is the Hydrological Open Air Laboratory, Lower Austria. Event runoff coefficient (Rc), recession time constant (Tc) and peak discharge (Qp) are estimated from hourly discharge and precipitation data for 298 events in the period 2013-2015. The results show that the Rc and their variability tend to be largest for the tile drainages (mean Rc = 0.09) and the main outlet (mean Rc = 0.08) showing larger Rc in January/February and smaller Rc in July/August. Tc does not vary much between the systems and tends to be largest at the main outlet (mean Tc = 6.5 h) and smallest for the tile drainages (mean Tc = 4.5 h). Groundwater levels explain the temporal variability of Rc and Tc more than soil moisture or precipitation, suggesting a role of shallow flow paths.

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“…Such measures have been examined in detail in the Tianmu Lake basin, where up to 75% of TN loads can be retained if appropriate measures are implemented [50]. Small upland ponds and cascading wetlands are both able to strongly buffer nutrient loads in hilly catchments [124][125][126]. The efficacy of the latter has been demonstrated along the Zhangtian River in the Tianmu Lake watershed (Figure 2).…”

Section: Integrative Management To Mediate Nutrient Lossmentioning

confidence: 99%

An Integrative Framework to Control Nutrient Loss: Insights from Two Hilly Basins in China’s Yangtze River Delta

Pueppke

Zhang

et al. 2019

Water

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Rapid economic development and population growth in China’s Yangtze River Delta (YRD) are exerting significant environmental pressure on the region’s land and water, especially in hilly areas where many drinking water reservoirs have been constructed. These areas, which are characterized by steep slopes and thin soils, provide critical services, including flood control, water resource supply, food production, and recreational opportunities for nearby highly developed and heavily populated areas of the delta. We contrast two of these areas—the well-studied Tianmu Lake watershed and the much larger Qiandao Lake watershed. Both face similar challenges from nitrogen and phosphorus pollution due to rapid socio-economic development, but differences in watershed size and distinctions related to political boundaries influence the range of approaches available to maintain water quality. We review experiences of controlling nutrient pollution in these watersheds as case studies, and based on that information, propose an integrated framework to minimize nitrogen and phosphorus pollution in similarly challenged watersheds. The framework, which is designed to be generalizable rather than prescriptive, emphasizes source control, delivery interception, and fate management of nutrients.

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Spatial Variability and Temporal Persistence of Event Runoff Coefficients for Cropland Hillslopes

Cited by 22 publications

References 53 publications

Effects of plot length and soil texture on runoff and sediment yield occurring on machine-trafficked soils in a mixed deciduous forest

Effects of plot length and soil texture on runoff and sediment yield occurring on machine-trafficked soils in a mixed deciduous forest

Spatial and temporal variability of event runoff characteristics in a small agricultural catchment

An Integrative Framework to Control Nutrient Loss: Insights from Two Hilly Basins in China’s Yangtze River Delta

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