Tomer - Challenges of Developing Conservation Planning Tools
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1. The document discusses using LIDAR topographic data to develop tools for conservation planning. It explores how LIDAR data can be used to target practices to improve water quality by identifying pollutant pathways and opportunities for treatment. 2. The document examines challenges in using LIDAR data such as accounting for accuracy errors, determining the appropriate scale of analysis, and modeling hydrologic flow across different landscapes and existing conservation practices. 3. It emphasizes that while LIDAR data shows great detail and potential for conservation planning, its accuracy on non-hard surfaces and representation of actual flow routing needs to be validated, and it cannot replace on-site knowledge.
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Tomer - Challenges of Developing Conservation Planning Tools
- 1. The Challenges of Developing Conservation Planning Tools Using LIDAR Topographic Data M.D. Tomer, D.E. James, D.B. Jaynes National Soil Tilth Laboratory, USDA-ARS T. M. Isenhart, and S. Krogh Iowa State University
- 2. Map of research site showing sampling transects, and the wetness index which indicates the relative frequency of saturated soil conditions.
- 3. Placement of buffers Placement of wetlands Terrain analysis tools to target specific conservation practices
- 5. Aspects of targeting Dosskey et al. (2002) Helmers et al., 2005 Where? When? What pathway? TILE DRAINAGE SUBSURFACE OVERLAND
- 6. Using LiDAR data to plan and target conservation practices Source: USGS
- 8. Delineation of nutrient interception wetlands
- 10. Lidar coverage of Walnut Creek
- 13. Influence of scale: Flow accumulation pathways on 1, 5, and 10 m grids. “ Channel” thresholds shown are identical at each scale. Scale
- 14. Hydrologic routing Lidar image: processed DEM at 1 m grid Note detail shown in roads, ditches, fence lines, tillage, and vegetation boundaries. This affects flow routing!
- 15. Hydrologic routing - boundaries Grass Waterways
- 16. Hydrologic routing - boundaries
- 17. Mapped changes in surface elevation from 2002 to 2005 Hydrologic routing - boundaries
- 19. Hydrologic routing - potholes
- 20. Hydrologic routing - potholes
- 21. Effect of existing conservation practices on hydrologic flow routing Hydrologic routing - terraces