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| Tanaka, Katsuya; Wu, JunJie. |
| This study compares the environmental and economic effects of alternative targeting strategies (benefit, cost, and benefit-cost ratio targeting) for reducing nitrate-N water pollution in the Des Moines Watershed in Iowa. The objective is achieved by applying an integrated modeling system to nitrate-N runoff from the Des Moines Watershed. Our integrated modeling system consists of an econometric model and a physically-based hydrologic balance simulation model. The econometric model estimates the opportunity cost of CRP participation is calculated at each parcel. The Soil and Water Assessment Tool (SWAT) is then used to simulate the level of nitrate-N runoff at each NRI parcel in the watershed. Our results show that the benefit-cost targeting achieves the... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/21302 |
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| Tanaka, Katsuya; Wu, JunJie. |
| This study integrates economic and physical models to estimate the social costs of several commonly suggested policies (chemical-use tax and three types of conservation payments) for reducing nitrogen loads to the Mississippi River and for controlling hypoxia in the Gulf of Mexico. The economic models predict farmer's crop rotations, tillage practices, and participation in the Conservation Reserve Program (CRP) at more than 44,000 Natural Resource Inventory sites in the Upper Mississippi River Basin. The estimated land use changes under the four policies are incorporated into a physical model to assess their impact on nitrate-N concentrations in the Mississippi River. Results suggest that the fertilizer-use tax is much more cost-effective than the three... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 2004 |
URL: http://purl.umn.edu/20135 |
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