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Author Roebeling, P. C. ♦ Rocha, J. ♦ Nunes, J. P. ♦ Fidélis, T. ♦ Alves, H. ♦ Fonseca, S.
Source World Health Organization (WHO)-Global Index Medicus
Content type Text
Publisher American Society of Agronomy
File Format HTM / HTML
Language English
Difficulty Level Medium
Subject Domain (in DDC) Technology ♦ Medicine & health ♦ Diseases ♦ Agriculture & related technologies ♦ Techniques, equipment & materials
Subject Keyword Discipline Environmental Health
Abstract Coastal aquatic ecosystems are increasingly affected by diffuse source nutrient water pollution from agricultural activities in coastal catchments, even though these ecosystems are important from a social, environmental and economic perspective. To warrant sustainable economic development of coastal regions, we need to balance marginal costs from coastal catchment water pollution abatement and associated marginal benefits from coastal resource appreciation. Diffuse-source water pollution abatement costs across agricultural sectors are not easily determined given the spatial heterogeneity in biophysical and agro-ecological conditions as well as the available range of best agricultural practices (BAPs) for water quality improvement. We demonstrate how the Soil and Water Assessment Tool (SWAT) can be used to estimate diffuse-source water pollution abatement cost functions across agricultural land use categories based on a stepwise adoption of identified BAPs for water quality improvement and corresponding SWAT-based estimates for agricultural production, agricultural incomes, and water pollution deliveries. Results for the case of dissolved inorganic nitrogen (DIN) surface water pollution by the key agricultural land use categories ('annual crops,' 'vineyards,' and 'mixed annual crops & vineyards') in the Vouga catchment in central Portugal show that no win-win agricultural practices are available within the assessed BAPs for DIN water quality improvement. Estimated abatement costs increase quadratically in the rate of water pollution abatement, with largest abatement costs for the 'mixed annual crops & vineyards' land use category (between 41,900 and 51,900 tDIN yr) and fairly similar abatement costs across the 'vineyards' and 'annual crops' land use categories (between 7300 and 15,200 tDIN yr).
ISSN 00472425
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Reading ♦ Research ♦ Self Learning
Interactivity Type Expositive
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2014-01-01
Publisher Place United States
e-ISSN 15372537
Journal Journal of Environment Quality
Volume Number 43
Issue Number 1

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Source: WHO-Global Index Medicus