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Planning Best Management Practices to Reduce Sediment Delivery from Forest Roads Using WEPP:Road Erosion Modeling and Simulated Annealing Optimization
James A. Efta
; USDA Forest Service- CusterNational Forest. 1310 Main Street Billings MT 59102 USA
Woodam Chung
; Department of Forest Engineering Resources and Management Oregon State University 267 Peavy Hall Corvallis, OR97331-5703 USA
Sažetak
Planning and implementation of road BMPs on a watershed scale can be a difficult task because of the need to prioritize locations while accounting for multiple constraints, such as the available budget, continuous maintenance, and equipment scheduling. Using simulated annealing (SA) as its heuristic optimizer, BMP-SA accounts for sediment being delivered to the stream network through incorporation of modeled road erosion predictions and alternative BMP options and scheduling for problematic road segments. BMP-SA was applied to the Glenbrook Creek watershed in the Lake Tahoe Basin in Nevada, US. WEPP:Road predictions were used to identify road segments posing an erosion risk and appropriate BMPs were identified for problematic segments. Using BMP-SA, modeled road-related sediment leaving the forest buffer, thus entering streams, was minimized over the course of the planning horizon while considering budget constraints and equipment scheduling concerns. BMP-SA can be applied to any watershed but relies heavily on the perceived accuracy of road erosion predictions.
Ključne riječi
forest roads; BMPs; simulated annealing; WEPP:Road; erosion modeling; road management; budget planning
Hrčak ID:
127000
URI
Datum izdavanja:
15.9.2014.
Posjeta: 1.025 *