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The relative impact of harvest and fire upon landscape-level dynamics of older forests: lessons from the Northwest Forest PlanAuthor(s): Sean Healey; Warren Cohen; Thomas A. Spies; Melinda Moeur; Dirk Pflugmacher; M. German Whitley; Michael Lefsky
Source: Ecosystems -- DOl: 10.1007/510021-008-9182-8
Publication Series: Scientific Journal (JRNL)
PDF: Download Publication (3.09 MB)
DescriptionInterest in preserving older forests at the landscape level has increased in many regions, including the Pacific Northwest of the United States. The Northwest Forest Plan (NWFP) of 1994 initiated a significant reduction in the harvesting of older forests on federal land. We used historical satellite imagery to assess the effect of this reduction in relation to: past harvest rates, management of non-federal forests, and the growing role of fire. Harvest rates in non-federal large-diameter forests (LDF) either decreased or remained stable at relatively high rates following the NWFP, meaning that harvest reductions on federal forests, which cover half of the region, resulted in a significant regional drop in the loss of LDF to harvest. However, increased losses of LDF to fire outweighed reductions in LDF harvest across large areas of the region. Elevated fire levels in the western United States have been correlated to changing climatic conditions, and if recent fire patterns persist, preservation of older forests in dry ecosystems will depend upon practical and coordinated fire management across the landscape.
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CitationHealey, Sean; Cohen, Warren; Spies, Thomas A.; Moeur, Melinda; Pflugmacher, Dirk; Whitley, M. German; Lefsky, Michael. 2008. The relative impact of harvest and fire upon landscape-level dynamics of older forests: lessons from the Northwest Forest Plan. Ecosystems. 1: 1106-1119.
Keywordsdisturbance, fire, landsat, forest management, Northwest Forest Plan, old growth
- The relative impact of harvest and fire upon landscape-level dynamics of older forests: Lessons from the Northwest Forest Plan
- Mapping older forests: satellites, statistics, and boots on the ground
- Northwest Forest Plan–the first 20 years (1994-2013): status and trends of late-successional and old-growth forests
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