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Forests 2017, 8(10), 383; https://doi.org/10.3390/f8100383

Forest Harvest Patterns on Private Lands in the Cascade Mountains, Washington, USA

1
United States Geological Survey, Western Geographic Science Center, Menlo Park, CA 94025, USA
2
United States Geological Survey, Western Geographic Science Center, Tucson, AZ 85719, USA
3
Emeritus, United States Geological Survey, Western Geographic Science Center, Corvallis, OR 97333, USA
*
Author to whom correspondence should be addressed.
Received: 16 August 2017 / Revised: 28 September 2017 / Accepted: 3 October 2017 / Published: 7 October 2017
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Abstract

Forests in Washington State generate substantial economic revenue from commercial timber harvesting on private lands. To investigate the rates, causes, and spatial and temporal patterns of forest harvest on private tracts throughout the Cascade Mountains, we relied on a new generation of annual land-use/land-cover (LULC) products created from the application of the Continuous Change Detection and Classification (CCDC) algorithm to Landsat satellite imagery collected from 1985 to 2014. We calculated metrics of landscape pattern using patches of intact and harvested forest in each annual layer to identify changes throughout the time series. Patch dynamics revealed four distinct eras of logging trends that align with prevailing regulations and economic conditions. We used multiple logistic regression to determine the biophysical and anthropogenic factors that influence fine-scale selection of harvest stands in each time period. Results show that private lands forest cover became significantly reduced and more fragmented from 1985 to 2014. Variables linked to parameters of site conditions, location, climate, and vegetation greenness consistently distinguished harvest selection for each distinct era. This study demonstrates the utility of annual LULC data for investigating the underlying factors that influence land cover change. View Full-Text
Keywords: LCMAP; CCDC; land use; land cover; land change; forest harvest; Cascade Mountains; Washington LCMAP; CCDC; land use; land cover; land change; forest harvest; Cascade Mountains; Washington
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

  • Externally hosted supplementary file 1
    Doi: 10.5066/F7X63KWW
    Link: https://doi.org/10.5066/F7X63KWW
    Description: Annual patch statistics and samples of presence and absence used in the multiple logistic regression are provided on USGS Sciencebase. Data can be accessed by searching by article title, author name, or digital object identifier (10.5066/F7X63KWW).
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Soulard, C.E.; Walker, J.J.; Griffith, G.E. Forest Harvest Patterns on Private Lands in the Cascade Mountains, Washington, USA. Forests 2017, 8, 383.

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