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Climate and Productivity of Major Conifer Species in the Interior of British Columbia, Canada

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Abstract:

Lodgepole pine (Pinus contorta var. latifolia Engelm. ex S. Wats.), interior spruce (including Picea glauca (Moench) Voss, P. engelmannii Parry ex. Engelm., P. glauca×engelmannii), and interior Douglas-fir (Pseudotsuga menziesii var. glauca (Beissn.) Franco) are the most important commercial species in the interior of British Columbia. We develop statistical models to predict site index (a measure of site productivity) from climate for these species. Using data from 193 climate stations, we first developed models that predict mean annual temperature, mean temperature of the warmest and coldest months, number of frost-free days, and frost-free period from latitude, longitude, and elevation. With these models and the Parameter-elevation Regressions on Independent Slopes Model (used to predict mean annual and mean summer precipitation), we predict 10 climate attributes for site index plots of lodgepole pine, interior spruce, and interior Douglas-fir. These attributes are then used in regression models to estimate site index. The models allow us to investigate the current relationship between climate (particularly temperature and precipitation) and site productivity for these species. The productivity for all the species studied increased as temperature increased, with lodgepole pine exhibiting the greatest response. The productivity of lodgepole pine and interior Douglas-fir also increased with increasing precipitation, with interior Douglas-fir having a greater response than lodgepole pine. We discuss the application of the models in relation to the impact of climate change on site productivity. FOR. SCI. 50(5):659–671.

Keywords: Douglas-fir; Lodgepole pine; climate change; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; natural resource management; natural resources; site index; spruce

Document Type: Regular Article

Affiliations: 1: Biometrician Growth & Yield, Research Branch BC Ministry of Forests PO Box 9519 Stn. Prov. Govt. Victoria BC Canada V8W 9C2 Phone: 250-387-3093;, Fax: 250-387-0046, Email: Gordon.Nigh@gems5.gov.bc.ca 2: Research Scientist Research Branch BC Ministry of Forests PO Box 9519 Stn. Prov. Govt. Victoria BC Canada V8W 9C2 Phone: 250-387-3976, Email: Cheng.Ying@gems9.gov.bc.ca 3: Associate Curator Research and Collections Center Illinois State Museum 1011 East Ash Springfield IL 62703 Phone: 217-782-2621, Email: hqian@museum.state.il.us

Publication date: 2004-10-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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