NLEAP/GIS approach for identifying and mitigating regional nitrate-nitrogen leaching
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Abstract
Improved simulation-based methodology is needed to help identify broad geographical areas where potential NO3-N leaching may be occurring from agriculture and suggest management alternatives that minimize the problem. The Nitrate Leaching and Economic Analysis Package (NLEAP) model was applied to estimate regional NO3-N leaching in eastern Colorado. Results show that a combined NLEAP/GIS technology can be used to identify potential NO3-N hot spots in shallow alluvial aquifers under irrigated agriculture. The NLEAP NO3-N Leached (NL) index provided the most promising single index followed by NO3-N Available for Leaching (NAL). The same combined technology also shows promise in identifying Best Management Practice (BMP) methods that help minimize NO3-N leaching in vulnerable areas. Future plans call for linkage of the NLEAP/GIS procedures with groundwater modeling to establish a mechanistic analysis of agriculture-aquifer interactions at a regional scale.
| Publication type | Book chapter |
|---|---|
| Publication Subtype | Book Chapter |
| Title | NLEAP/GIS approach for identifying and mitigating regional nitrate-nitrogen leaching |
| DOI | 10.2136/sssaspecpub48.c17 |
| Year Published | 1996 |
| Language | English |
| Publisher | Soil Science Society of America |
| Publisher location | Madison, WI |
| Contributing office(s) | Earth Resources Observation and Science (EROS) Center |
| Description | 12 p. |
| Larger Work Type | Book |
| Larger Work Title | Applications of GIS to the modeling of non-point source pollutants in the vadose zone, SSSA Special Publication 48 |
| First page | 283 |
| Last page | 294 |
| Google Analytic Metrics | Metrics page |