Hydro-pedotransfer functions (HPTFs) for predicting annual percolation rate on a regional scale

Wessolek, Gerd; Duijnisveld, Wilhelmus H. M.; Trinks, Steffen

doi:10.1016/j.jhydrol.2008.03.007

Cited by 36 publications

(28 citation statements)

References 15 publications

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“…], where the superscript E indicates the element), the weighted mean of concentrations C mean [mg m -3 ] in the sampled soil solutions of the intensivemeasurement subplots were multiplied with the groundwater recharge for 1 yr, q c (m). The groundwater recharge rate was estimated according to the hydro-pedotransfer function (HPTF) for grassland (Wessolek et al, 2008), whereas the C mean is given by the following:…”

Section: Determination Of Water-retention Characteristic and Calculatmentioning

confidence: 99%

“…Data necessary for determination of the groundwater recharge rate with the HPTF according to Wessolek et al (2008) are annual precipitation (597 mm), precipitation in summer (346 mm), annual potential evapotranspiration (ET 0 ) (754 mm), and plantavailable water capacity in the effective root zone (AWCL). The AWCL is given by AWC multiplied by the effective rooting depth (L [cm]).…”

Section: Determination Of Water-retention Characteristic and Calculatmentioning

confidence: 99%

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Biochar Reduces Zinc and Cadmium but not Copper and Lead Leaching on a Former Sewage Field

et al. 2014

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The leaching of trace metals from anthropogenically contaminated sites poses the risk of groundwater pollution. Biochar has recently been proposed as a soil additive to reduce trace-metal concentrations in the soil solution and to increase water retention, thus reducing drainage. However, field studies on the effects of biochar addition on trace-metal leaching are scarce. Therefore, we added 0, 1, 2.5, and 5 g 100 g -1 of biochar derived from giant miscanthus (Miscanthus × giganteus J.M. Greef & Deuter ex Hodk. & Renvoize) to soil contaminated by former wastewater irrigation and examined water retention and cumulative leaching of Zn, Cd, Cu, and Pb in a 2-yr field study. Cumulative trace-metal leaching was determined by selfintegrating accumulators (SIAs) based on ion-exchange resins and compared with data calculated from mean concentrations in the soil solution collected with tension lysimeter plates and groundwater recharge rate. The highest rate of biochar addition increased water retention and thus reduced the amount of drainage water. Mean cumulative Zn and Cd fluxes decreased due to both reduced concentrations in the soil solution and reduced drainage. Although Cu and Pb concentrations in the soil solution increased with biochar addition, the reduced drainage resulted in similar fluxes in the biochar and the control treatment. The cumulative Zn, Cd, and Cu fluxes determined with SIAs were in the same range as the calculated values, while SIA-based Pb fluxes were much higher than those calculated. Since the suction plates excluded colloids, the high SIA-based Pb fluxes indicate colloidal transport and reveal the importance to elucidate the colloidal pathway for risk assessment.

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Section: Determination Of Water-retention Characteristic and Calculatmentioning

confidence: 99%

Section: Determination Of Water-retention Characteristic and Calculatmentioning

confidence: 99%

Biochar Reduces Zinc and Cadmium but not Copper and Lead Leaching on a Former Sewage Field

et al. 2014

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“…Water, which is left in the bucket after an event will add to the next event. With that argument, TBs have been employed for run-off studies aiming at the measurement of annual mean run-off amounts for paved urban soils (Wessolek and Facklam, 1997;Wessolek et al, 2008). In systems, where the tipping bucket can not be sealed against the atmosphere, as in our setup, water could be lost from the bucket due to evaporation.…”

Section: Limited Volume and Temporal Resolution Of Tipping Bucketsmentioning

confidence: 99%

Technical note on measuring run-off dynamics from pavements using a new device: the weighable tipping bucket

Nehls

Rim

Wessolek

2011

Hydrol. Earth Syst. Sci.

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Abstract. Due to climate change, cities need to adapt to changing rainfall and rainwater run-off dynamics. In order to develop an corresponding process based run-off model for pavements, we had to improve the measurement technique to detect run-off dynamics in an appropriate high resolution.Traditional tipping buckets (TB) have a comparable low volume resolution, capable to quantify the highest intensities in a range of expected flows. This results in varying temporal resolutions for varying flow intensities, especially in low resolutions for small flow events. Therefore, their applicability for run-off measurements and other hydrological process studies is limited, especially when the dynamics of both small and big flow events shall be measured.We improved a TB by coupling it to a balance and called it weighable tipping bucket (WTB). This paper introduces the device set up and the according data processing concept. The improved volume and temporal resolution of the WTB are demonstrated. A systematic uncertainty of TB measurements compared to WTB measurements is calculated. The impact of that increased resolution on our understanding of run-off dynamics from paved urban soils are discussed, exemplary for the run-off and the surface storage of a paved urban soil.The study was conducted on a permeably paved lysimeter situated in Berlin, Germany. Referring to the paved surface, the TB has a resolution of 0.1 mm, while the WTB has a resolution of 0.001 mm. The temporal resolution of the WTB is 3 s, the TB detects individual tippings with 0.4 s between them. Therefore, the data processing concept combines both the benefits of the balance to measure small intensities with that of the TB to measure high flow intensities.During a five months period (July to November 2009) 154 rain events were detected. Accordingly, the TB and WTB detected 47 and 121 run-off events. The total run-off was Correspondence to: T. Nehls (thomas.nehls@tu-berlin.de) 79.6 mm measured by the WTB which was 11 % higher than detected by the TB. 95 % of that difference can be appointed to water, which evaporated from the TB. To derive a surface storage estimation, we analyzed the WTB and TB data for rain events without run-off. According to WTB data, the surface storage of the permeable pavement is 1.7 mm, while using TB data leads to an overestimation of 47 % due to low volume resolution of the TB.Combining traditional TB with modern, fast, high resolution digital balances offers the opportunity to upgrade existing TB systems in order to improve their volume detection limit and their temporal resolution, which is of great advantage for the synchronization of water balance component measurements and the investigation of hydrological processes. Furthermore, we are able to quantify the uncertainty of flow measurements gained with traditional tipping buckets.

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“…When the number of sampled data is low for reliable spatial estimates of the primary variable, auxiliary variables such as terrain attributes and soil class membership can be OM organic matter content, CL clay content, Dg decimal logarithm of the geometric mean of soil particle size, K erodibility factor of the RUSLE equation used as potential predictors to estimate the primary variable in supplementary locations by using Local Topotransfer Functions (Salski 2006;Wessolek et al 2008). A prerequisite for the development of these functions is the availability of auxiliary variables in the same locations, covering representative value ranges in which these variables are expected to vary within the study area (Illian et al 2008).…”

Section: Supplementary Data and Regression Analysesmentioning

confidence: 99%

Mapping soil erodibility from composed data set in Sele River Basin, Italy

Diodato¹,

Fagnano

Alberico

et al. 2010

Nat Hazards

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Evaluation of soil erodibility is an important task for Mediterranean lands, in which fertility and crop yield are significantly affected by soil erosion. The soil physicochemical parameters affecting soil erodibility are highly variable in space and, as for many other environmental variables, sample measurements are generally not enough for assessing its spatial variability with an acceptable level of uncertainty at the scales of practical interest. This study illustrates the procedure applied for estimating the pattern of soil erodibility across the Sele Basin (Southern Italy), where soil properties have been measured on a limited number of sparse samples. Sampled data were integrated with other sparse data estimated by local regression functions, which relate soil erodibility to auxiliary variables, such as terrain attributes and land system class memberships. Sampled and estimated data were merged in a composed data set to assess the spatial pattern of soil erodibility by ordinary kriging. The proposed approach offers effective spatial predictions, and it is exportable to regions where financial costs for soil sampling are not feasible.

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Hydro-pedotransfer functions (HPTFs) for predicting annual percolation rate on a regional scale

Cited by 36 publications

References 15 publications

Biochar Reduces Zinc and Cadmium but not Copper and Lead Leaching on a Former Sewage Field

Biochar Reduces Zinc and Cadmium but not Copper and Lead Leaching on a Former Sewage Field

Technical note on measuring run-off dynamics from pavements using a new device: the weighable tipping bucket

Mapping soil erodibility from composed data set in Sele River Basin, Italy

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