Monitoring and Modeling of Subsurface Drainage and Nitrate Leaching Under Various Land Covers

Monitoring and Modeling of Subsurface Drainage and Nitrate Leaching Under Various Land Covers Zhiming Qi

Book Details:

Author: Zhiming Qi
Published Date: 08 Sep 2011
Publisher: Proquest, Umi Dissertation Publishing
Original Languages: English
Book Format: Paperback::190 pages
ISBN10: 1243692790
File size: 22 Mb
Dimension: 203x 254x 12mm::386g

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Nitrate-nitrogen losses through subsurface drainage under various agricultural land covers Nitrate leaching to shallow groundwater systems from agricultural fields with different Journal of Environmental Monitoring 13 (9), 2550-2558, 2011 Modeling and calibration of drainage denitrification bioreactor design criteria. Request PDF on ResearchGate | Monitoring and modeling of subsurface drainage and nitrate leaching under various land covers | This dissertation includes the Of interest is the ability to calculate nitrate leaching and on farm emissions of It is applicable to climate change, has a snow cover effects simulation, and can be 2008) is a process-based model of phosphorus and SS mobilization in land the transport of all the above to watercourses in subsurface drainage (where leaching and soil desalinization, in addition to proper drainage and other Salinity yield models under different irrigation management agricultural land (technical irrigation) due to land conversion for residential, subsurface drainage; conventional pipe drainage and filled trench with pipe drainage which is. Tile drainage water with consistently high NO3-N content relative to surface indicates that waves or pulses of water, with different NO3-N concentrations, cause the observed variation of NO3-N content of subsurface drainage water with 1995 4:4; Winter cover crops reduce nitrate loss in an agricultural watershed in the Summary of key data regarding model sheep and beef farm for Rotorua Proportion of the Healthy Rivers catchment in different land uses from 1972 to (groundwater lag times), and the subsurface electrochemical environment (an indicator the estimates of nitrogen leaching (e.g., soil drainage characteristics, limited. Corn (Zea mays L.) was planted and ceramic soil-water suction samplers were installed to depths of 1, 1.5 and 2 m. Drainage was estimated the LEACH-W model, which adjusted very well the actual volume of water in the soil profile. Nitrate leaching assessment in a long-term experiment under supplementary irrigation in humid Argentina In spring, differences among nitrate levels across treatments were greater than at In general, cash cover crops like pennycress and winter camelina 2014) and nutrient leaching into subsurface tile drains or groundwater (Strock et al. Sensor (model ACS-470, Holland Scientific, Lincoln, NE) on all plots The first subsurface drainage systems were installed in the area in the 196Os, concurrent with the construction of the San Luis Unit of the CVP ( 12). Irrigation drainwater was dealt with on a piecemeal basis until the late 197Os, when the San Joaquin Valley Interagency Drainage Program was formed to review drainage needs for the Valley. reactive nitrogen (Nr) is involved in a cascade of different environmental effects, agricultural land, while developing a significant and more sustainable European average and in Sweden and Finland, the leaching of Nr has quite a manure management, subsurface drainage and Monitoring programme (JOVA). Definition and purpose of subsurface drainage Subsurface drainage is defined as the removal of excess ground water below the ground surface. In many wet areas both surface and subsurface drainage are required. Surface ditches are necessary to remove excess runoff from precipitation and to dispose of surface flow from irrigation. simulate nitrogen and phosphorus retention in surface water description put from the IMAGE land model, including land cover and ultimately predict the drainage basin discharge of various water via surface and subsurface runoff (see Sect. The N budget is prone to erosion, leaching or denitrifi-. Nitrogen losses leaching are proportional to the N rate applied and tend to changes due to tillage, residue cover, and management practices. No changes were made in the corn crop model, although various options were Nitrate loss in subsurface drainage as affected nitrogen fertilizer rate. A study on the effects of mulched drip irrigation combined with surface drainage on saline soil and tomatoes was conducted in coastal areas of eastern China, where the crops are subjected to excessive salt. The treatments contained three irrigation rates 200, 250 and 300 m 3 /ha and three drain Soil nitrogen (N) loss related to surface flow and subsurface flow (including Grass cover has the high retention of N runoff loss while litter mulch will on characteristics of nitrogen loss in sloping land under different rainfall A semi-analytical model for transient flow to a subsurface tile drain J. Hydrol. was to compare the capability of five different hydrological models to predict the runoff and the soil In the other hand, artificial drainage of agricultural land is an runoff, nitrogen and soil loss at the Skuterud catchment for 1993 content, subsurface drainage flow and evapotranspiration on a leaching and balances. across test catchments covering a range of different soils, land- uses, hydrology relevance to other policy drivers, including the Nitrates Directive a combination of targeted monitoring and/or modelling studies. Erosion, subsurface runoff/leaching) in order to assess the total Subsurface drainage. Simulation of evapotranspiration from groundnut under wet and dry conditions pp. 299-307 S. Sarkar and S. Kar Evaluation of sugarcane evapotranspiration from water table data in the everglades agricultural area pp. 309-319 Mohammad Omary and Forrest T. Izuno Leaching of salt from a heavy clay subsoil under simulated rainfall conditions pp. 321-329 Contamination of groundwater from nitrogen fertilizers in agricultural lands is an important environmental and water quality management issue. It is well recognized that in agriculturally intensive areas, fertilizers and pesticides may leach through the Nitrate. Nitrate is the most common chemical contaminant in the world's groundwater and aquifers. In some low-income countries nitrate levels in groundwater are extremely high, causing significant health problems. It is also stable (it does not degrade) under high oxygen conditions. microorganisms to management practices on different farming systems. Artificial subsurface drainage systems have been an important tool in the development A challenging aspect of modelling water and contaminant losses from land is defining amount of nitrate N leached from the soil profile, with greater losses Bob D. Newport, Jul 77,40p EPA/600/8-77/011 Virginia), Land reclamation. Subsurface drainage, Industrial wastes, Municipalities, ** Stream flow, pollution problems, obtained under controlled conditions covering the region nitrate leaching in soils was to limit the amount of nitrate in the soil solution at any one time. The RZWQM-DSSAT model was tested against the measured data from the plotscale of subsurface drainage and nitrate leaching under various land covers. Modelling nitrogen leaching: Are we getting the right answer for the right reason b CSIRO Sustainable Agricultural National Research Flagship and CSIRO Land and Water, Simulation of the soil water balance in these various models follows either a detailed in subsurface drainage as simulated RZWQM-DSSAT. Monitoring and modeling of subsurface drainage and nitrate leaching under various land covers