An analysis of trading ratio for water pollution control trading systems using a geographic information system and the finite segment method

2003 2003

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Abstract (summary)

Nitrogen from non-point sources reacts with the environment during flow to the waterway. These reactions cause decay of the pollutant. There is a question regarding whether pollution trades between point sources and non-point sources that involve nitrogen should consider this decay. The failure to consider this decay may cause trades to fail to achieve their environmental goal or to inefficiently achieve their environmental goal. Additionally, planners may consider the decay to target reductions and improve efficiency of trading programs.

The dissertation uses a geographic information system (GIS) and the finite segment method to evaluate the need for the use of a trading ratio to consider decay. It uses GIS, principles of process engineering, and principles of hydrology to model the distribution of the nitrogen in the watershed with and without decay. Additionally, it compares the predictions of the concentrations with and without decay. Finally, it uses GIS to estimate appropriate values of trading ratio.

The results show that the effect from decay during overland flow is appreciable but not always significant. The appropriate values of trading ratio are likely to be less than 1.3. Use of trading ratio may protect environmental quality and improve the efficiency of pollution control. However, sometimes the values of trading ratios are small relative to other factors so that the use of trading ratio is inconsequential. Finally, planners may use the decay of nitrogen from non-point sources to target the locations of the reductions to achieve the maximum decrease of concentration or to achieve the maximum increase of load without an increase in concentration.

Indexing (details)

Urban planning;
Area planning & development;
Environmental science;
Remote sensing
0999: Urban planning
0999: Area planning & development
0768: Environmental science
0799: Remote sensing
Identifier / keyword
Health and environmental sciences; Social sciences; Applied sciences; Control trading systems; Finite segment method; Geographic information system; Nitrogen; Pollution trading; Trading ratio; Water pollution
An analysis of trading ratio for water pollution control trading systems using a geographic information system and the finite segment method
Curley, Donald Edward
Number of pages
Publication year
Degree date
School code
DAI-A 64/06, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
Tomlin, Dana
University of Pennsylvania
University location
United States -- Pennsylvania
Source type
Dissertations & Theses
Document type
Dissertation/thesis number
ProQuest document ID
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
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