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DOI: | 10.2134/jeq2007.0111 |
Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/articles/38/1/121 Last checked: 11/07/2016 Access conditions: Item is within a limited-access website https://dl.sciencesocieties.org/publications/jeq/pdfs/38/1/121 Last checked: 11/08/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Lin, Z.;
Radcliffe, D. E.;
Risse, L. M.;
Romeis, J. J.;
Jackson, C. R. |
Author Affiliation: | Lin: Department of Agricultural and Biosystems Engineering, North Dakota State University, Fargo, North Dakota; Radcliffe: Department of Crop and Soil Sciences; Risse: Department of Biological and Agricultural Engineering; Romeis and Jackson: Daniel B. Warnell School of Forestry and Natural Resources, University of Georgia, Athens, Georgia |
Title: | Modeling phosphorus in the Lake Allatoona watershed using SWAT: II. Effect of land use change |
Section: | Technical reports: Landscape and watershed processes Other records with the "Technical reports: Landscape and watershed processes" Section
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Source: | Journal of Environmental Quality. Vol. 38, No. 1, January/February 2009, p. 121-129. |
Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
# of Pages: | 9 |
Keywords: | TIC Keywords: Phosphorus; Watershed management; Land use; Models; Nutrient loads; Nonpoint source pollution
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Abstract/Contents: | "Lake Allatoona is a large reservoir northeast of metropolitan Atlanta, GA, threatened by excessive algal growth. We used the calibrated Soil and Water Assessment Tool (SWAT) models developed in our companion paper to estimate the annual P load to Lake Allatoona in 1992 and in 2001 after significant changes occurred in land use. Land use data in 1992 and 2001 from the Multi-Resolution Land Characteristics (MRLC) Consortium showed that forest land use decreased during this period by about 20%, urban land use increased by about 225%, and pasture land uses increased by about 50%. Simulation results showed that the P load to Lake Allatoona increased from 176.5 to 207.3 Mg, which were 87.8% and 103.1%, respectively, of the total P (TP) annual cap (201 Mg) set by the Georgia Environmental Protection Division (GAEPD) for discharge into Lake Allatoona. In the early 1990s, the greatest sources of the TP load to Lake Allatoona (and their percentages of the total load) were pasture (33.6%), forest (27.5%), and point sources (25.0%). Urban land uses contributed about 6.0% and row-crop agriculture contributed about 6.8%. A decade later, the greatest two TP sources were pasture (52.7%) and urban (20.9%) land uses. Point-source P loads decreased significantly to 11.6%. Permit limits on poultry processing plants reduced the point-source P loads, but increasing urban and pasture land uses increased nonpoint sources of P. To achieve further reductions in the P load to Lake Allatoona, contributions from pasture and urban nonpoint sources will need to be addressed." |
Language: | English |
References: | 45 |
Note: | Figures Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Lin, Z., D. E. Radcliffe, L. M. Risse, J. J. Romeis, and C. R. Jackson. 2009. Modeling phosphorus in the Lake Allatoona watershed using SWAT: II. Effect of land use change. J. Environ. Qual. 38(1):p. 121-129. |
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| DOI: 10.2134/jeq2007.0111 |
| Web URL(s): https://dl.sciencesocieties.org/publications/jeq/articles/38/1/121 Last checked: 11/07/2016 Access conditions: Item is within a limited-access website https://dl.sciencesocieties.org/publications/jeq/pdfs/38/1/121 Last checked: 11/08/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: b2225072a |
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