Peak Flow Responses to Clear-Cutting and Roads in Small and Large Basins, Western Cascades, Oregon

摘要: This study quantified long-term changes in streamflows associated with clear- cutting and road construction examined alternative hydrologic mechanisms to explain stream hydrograph the Cascades Range, western Oregon. We differences paired peak discharges for 150 375 storm events five basin pairs, using 34-year records from two pairs of 60-to-101-ha experimental basins H. J. Andrews Experimental Forest, 50-to-55-year three adjacent ranging 60 600 km2. Forest harvesting has increased by as much 50% small 100% large over past 50 years. These increases are attributable both flow routing due roads water balance treatment effects vegetation succession.