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Showing 1 to 13 of 13 for “"Artificial drainage"”.
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Artificial Drainage of East Central Illinois, 1820-1920
Made available in DSpace on 2014-12-14T04:57:25Z (GMT). No. of bitstreams: 1 7524439.pdf: 16223354 bytes, checksum: 2ec58741438bb9c3e55ebbffdb94ac3e (MD5) Previous issue date: 1975
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Characterization of legacy soil P and quantification of subsurface losses under artificial drainage
… through subsurface pathways is increased due to artificial drainage. However, the mechanisms of soil P loss via subsurface pathways are poorly understood. In addition, there is evidence P solubility in P-enriched soils may decrease with time, especially if P applications are stopped. In this …
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The application of Earth Observation for mapping soil saturation and the extent and distribution of artificial drainage on Irish farms
Artificial drainage is required to make wet soils productive for farming. However, drainage may have unintended environmental consequences, for example, through increased nutrient loss to surface waters or increased flood risk. It can also have implications for greenhouse gas emissions. Accurate …
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The effect of distance between artificial drainage facilities and disposal trenches on the movement of biological and chemical pollutants from septic tank effluent
… determine the effect of setback distances from a drainage ditch on the disposal of septic tank effluent. The study was done from September 1979 to August 1981. The soil used is the Tomotley series belonging to the fine-loamy, mixed, thermic family of Typic Ochraquults. Four prototype trenches were …
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The Varying Effects of Climate And Landscape Changes on Increased River Flows In Minnesota Watersheds
… in the extent of corn/soybean cropping and artificial drainage. Currently, the relative contributions of these factors to increased flows are not well understood. There is also some indication that intense rain events have increased across this region and may coincide with increased flood …
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Comparison Of Denitrification Potential Around A Tile Drain And In Aquifer Sediments: Oakes, ND
… of either oxygen or NO<sub>3</sub>-.</p> <p>Artificial drainage within agricultural areas may allow contaminants to bypass, or increase conveyance through, reduced areas in which denitrification is likely to occur. This contributes to elevated NO<sub>3</sub>- yields as it is discharged …
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Fate and transport of antibiotic resistant bacteria and resistance genes in artificially drained agricultural fields receiving swine manure application
… ermC, ermF and msrA) in soil and subsurface artificial drainage water. Manure concentrations for ermB, ermC and ermF were all >109 copy g-1. MsrA was not detected in manure, soil or water. The average enterococci concentration in manure was 1.76 x 105 CFUg-1, with 83% resistant to tylosin. …
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Bayesian Methods to Characterize Uncertainty in Predictive Modeling of the Effect of Urbanization on Aquatic Ecosystems
… industrial chemicals). Impervious surfaces and artificial drainage systems speed the delivery of contaminants to streams, while bypassing soil filtration and local riparian processes that can mitigate the impacts of these contaminants, and disrupting the timing and volume of hydrologic patterns. …
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Observation-Based Algorithm Development For Subsurface Hydrology In Northern Temperate Wetlands
… was incorporated into a new subsurface drainage algorithm. The spatial variability of water table depth across landscape positions has been represented</p> <p>using a topographic index approach. By incorporating a water table gradient into the VIC grid cell, subsurface-surface water …
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Striking a balance between water for food, energy, and the environment: a quantitative framework to guide sustainable water management for a changing future
… geologic pasts and human modifications such as artificial drainage and reservoir operation. These differences manifest temporally, from annual to daily time scales, and spatially, both within and between the watersheds, suggesting a complex, nonlinear response to other, future external driving …
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A HYDROLOGICAL INVESTIGATION OF THREE DEVON SAND DUNE SYSTEMS; BRAUNTON BURROWS, NORTHAM BURROWS AND DAWLISH WARREN
… permeability, was restricting the inland lateral drainage regime and was controlling both the shape and elevation of the water table. At Northam the groundwater system was also mounded and again the shape and elevation of the water table were dependent upon effective precipitation. Unfortunately …
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HERBICIDE TRANSPORT FROM LAND TO SURFACE WATER IN AN ARTIFICIALLY DRAINED CATCHMENT
… of herbicide transport were conducted on an artificially drained field dominated by heavy clay soil (Denchworth soil association), in the Upper Cherwell catchment (UK). The main drain was monitored over five months during November 2009 to March 2010, when the field was in oilseed rape (OSR) …
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Constructed treatment wetlands: Tools to attenuate diffuse agricultural pollution and enhance the biodiversity of eutrophic peat lake ecosystems
… watercourses diverted from modified or artificial drainage networks, and outflows were either surface-flow (through drainage channels or culverts) or filtration (through vegetated riparian margins). Morphological predictors of CTW performance included area (range 7 – 1950 m²), depth (0.2 …