期刊
HYDROLOGICAL PROCESSES
卷 29, 期 3, 页码 473-480出版社
WILEY-BLACKWELL
DOI: 10.1002/hyp.10406
关键词
paired watershed; forest hydrology; ENSO; H. J. Andrews
资金
- National Science Foundation's Long-Term Ecological Research Program [DEB 0823380]
- US Forest Service Pacific Northwest Research Station
- Oregon State University
- Direct For Biological Sciences
- Division Of Environmental Biology [1440409] Funding Source: National Science Foundation
Paired watershed experiments involving the removal or manipulation of forest cover in one of the watersheds have been conducted for more than a century to quantify the impact of forestry operations on streamflow. Because climate variability is expected to be large, forestry treatment effects would be undetectable without the treatment-control comparison. New understanding of climate variability provides an opportunity to examine whether climate variability interacts with forestry treatments, in a predictable manner. Here, we use data from the H. J. Andrews Experimental Forest, Oregon, USA, to examine the impact of the El Nino-Southern Oscillation on streamflow linked to forest harvesting. Our results show that the contrast between El Nino and La Nina events is so large that, whatever the state of the treated watershed in terms of regrowth of the forest canopy, extreme climatic variability related to El Nino-Southern Oscillation remains the more dominant driver of streamflow response at this location. Improvements in forecasting interannual variation in climate might be used to minimize the impact of forestry treatments on streamflow by avoiding initial operations in La Nina years. Copyright (C) 2014 John Wiley & Sons, Ltd.
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