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    Author(s): Tara M. Barrett
    Date: 2015
    Source: In: Stanton, Sharon M.; Christensen, Glenn A., comps. 2015. Pushing boundaries: new directions in inventory techniques and applications: Forest Inventory and Analysis (FIA) symposium 2015. 2015 December 8–10; Portland, Oregon. Gen. Tech. Rep. PNW-GTR-931. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: 222-225.
    Publication Series: General Technical Report (GTR)
    Station: Pacific Northwest Research Station
    PDF: Download Publication  (358.0 KB)

    Description

    Analysis of remeasurement data from 1079 Forest Inventory and Analysis (FIA) plots revealed multi-scale change occurring in the temperate rainforests of southeast Alaska. In the western half of the region, including Prince William Sound, aboveground live tree biomass and carbon are increasing at a rate of 8 ( ± 2 ) percent per decade, driven by an increase in Sitka spruce. In the Alexander Archipelago, western red cedar is increasing, as is overall biomass on gentler slopes and in higher latitudes. These increases, which occurred during a warmer period of the Pacific Decadal Oscillation, correspond well with regional predictions of forest change in a warming climate. In the 180 thousand ha of managed forests on the Tongass National Forest, aboveground live tree carbon was found to be stable between the two inventory periods. And at the regional level, analysis of FIA data showed no significant change in the yellow-cedar population, despite widespread publicity for a ‘decline’ in this species. While FIA remeasurement data provides insight at a variety of scales, alterations in forest definition and other inventory methods complicated analysis.

    Publication Notes

    • Visit PNW's Publication Request Page to request a hard copy of this publication.
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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Barrett, Tara M. 2015. Forest dynamics in the temperate rainforests of Alaska: from individual tree to regional scales. In: Stanton, Sharon M.; Christensen, Glenn A., comps. 2015. Pushing boundaries: new directions in inventory techniques and applications: Forest Inventory and Analysis (FIA) symposium 2015. 2015 December 8–10; Portland, Oregon. Gen. Tech. Rep. PNW-GTR-931. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: 222-225.

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