Hydraulic properties affected by litter and stem cover under overland flow

2021 ◽  
Vol 35 (3) ◽  
Author(s):  
Lin Ding ◽  
Suhua Fu ◽  
Hui Zhao
Keyword(s):  
Hydraulic Properties ◽  
Overland Flow

scholarly journals Pedotransfer in soil physics: trends and outlook — A review —

2015 ◽  
Vol 64 (2) ◽  
pp. 339-360 ◽  
Author(s):  
Ya. Pachepsky ◽  
K. Rajkai ◽  
B. Tóth
Keyword(s):  
Hydraulic Properties ◽  
Overland Flow ◽  
Extreme Event ◽  
Temporal Stability ◽  
Model Performance ◽  
Pedotransfer Functions ◽  
Soil Physics ◽  
Labor Costs ◽  
Soil Hydraulic Properties ◽  
Soil Hydraulic

Parameters governing the retention and movement of water and chemicals in soils are notorious for the difficulties and high labor costs involved in measuring them. Often, there is a need to resort to estimating these parameters from other, more readily available data, using pedotransfer relationships. This work is a mini-review that focuses on trends in pedotransfer development across the World, and considers trends regarding data that are in demand, data we have, and methods to build pedotransfer relationships. Recent hot topics are addressed, including estimating the spatial variability of water contents and soil hydraulic properties, which is needed in sensitivity analysis, evaluation of the model performance, multimodel simulations, data assimilation from soil sensor networks and upscaling using Monte Carlo simulations. Ensembles of pedotransfer functions and temporal stability derived from “big data” as a source of soil parameter variability are also described. Estimating parameter correlation is advocated as the pathway to the improvement of synthetic datasets. Upscaling of pedotransfer relationships is demonstrated for saturated hydraulic conductivity. Pedotransfer at coarse scales requires a different type of input variables as compared with fine scales. Accuracy, reliability, and utility have to be estimated independently. Persistent knowledge gaps in pedotransfer development are outlined, which are related to regional soil degradation, seasonal changes in pedotransfer inputs and outputs, spatial correlations in soil hydraulic properties, and overland flow parameter estimation. Pedotransfer research is an integral part of addressing grand challenges of the twenty-first century, including carbon stock assessments and forecasts, climate change and related hydrological weather extreme event predictions, and deciphering and managing ecosystem services. Overall, pedotransfer functions currently serve as an essential instrument in the science-based toolbox for diagnostics, monitoring, predictions, and management of the changing Earth and soil as a life-supporting Earth system.

scholarly journals Using Wastewater in Irrigation: The Effects on Infiltration Process in a Clayey Soil

Water ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 968 ◽  
Author(s):  
Ammar A. Albalasmeh ◽  
Mamoun A. Gharaibeh ◽  
Ma’in Z. Alghzawi ◽  
Renato Morbidelli ◽  
Carla Saltalippi ◽  
...  
Keyword(s):  
Soil Water ◽  
Hydraulic Properties ◽  
Field Experiments ◽  
Overland Flow ◽  
Clayey Soil ◽  
Water Infiltration ◽  
Treated Wastewater ◽  
Water Drainage ◽  
Infiltration Process ◽  
Relevant Effect

Soil water infiltration is a critical process in the soil water cycle and agricultural practices, especially when wastewater is used for irrigation. Although research has been conducted to evaluate the changes in the physical and chemical characteristics of soils irrigated by treated wastewater, a quantitative analysis of the effects produced on the infiltration process is still lacking. The objective of this study is to address this issue. Field experiments previously conducted on three adjacent field plots characterized by the same clayey soil but subjected to three different irrigation treatments have been used. The three irrigation conditions were: non-irrigated (natural conditions) plot, irrigated plot with treated wastewater for two years, and irrigated plot with treated wastewater for five years. Infiltration measurements performed by the Hood infiltrometer have been used to estimate soil hydraulic properties useful to calibrate a simplified infiltration model widely used under ponding conditions, that were existing during the irrigation stage. Our simulations highlight the relevant effect of wastewater usage as an irrigation source in reducing cumulative infiltration and increasing overland flow as a result of modified hydraulic properties of soils characterized by a lower capacity of water drainage. These outcomes can provide important insights for the optimization of irrigation techniques in arid areas where the use of wastewater is often required due to the chronic shortage of freshwater.

scholarly journals The effect of hedgerow wild‐margins on topsoil hydraulic properties, and overland‐flow incidence, magnitude and water‐quality

2021 ◽  
Vol 35 (3) ◽  
Author(s):  
Ethan E. Wallace ◽  
Gareth McShane ◽  
Wlodek Tych ◽  
Ann Kretzschmar ◽  
Thomas McCann ◽  
...  
Keyword(s):  
Water Quality ◽  
Hydraulic Properties ◽  
Overland Flow

Assessing the impact of the hydraulic properties of a crusted soil on overland flow modelling at the field scale

2006 ◽  
Vol 20 (8) ◽  
pp. 1701-1722 ◽  
Author(s):  
Nanée Chahinian ◽  
Marc Voltz ◽  
Roger Moussa ◽  
Gwenn Trotoux
Keyword(s):  
Hydraulic Properties ◽  
Overland Flow ◽  
Field Scale ◽  
Flow Modelling ◽  
The Impact

Summary of hydraulic properties of the Floridan Aquifer system in coastal Georgia and adjacent parts of South Carolina and Florida

2005 ◽  
Author(s):  
John S. Clarke ◽  
David C. Leeth ◽  
DaVette Taylor-Harris ◽  
Jaime A. Painter ◽  
James L. Labowski
Keyword(s):  
South Carolina ◽  
Hydraulic Properties ◽  
Aquifer System ◽  
Floridan Aquifer
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