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    Climate change impacts on growth of black spruce in western Canadian boreal forest

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    MaoG2022b-1a.pdf (1.244Mb)

    Date

    2022

    Author

    Mao, Guangdong

    Degree

    Honours Bachelor of Science in Forestry

    Discipline

    Natural Resources Management

    Subject

    Tree rings
    Climate change
    Black spruce (Picea mariana)

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    Abstract

    This study explored the effects of changes climate on the growth rate of black spruce in western Canadian boreal forests over a 55-year time from 1950 to 2005. A multiple linear regression model was run for tree ring data, mean annual temperature, and precipitation from three sites at different latitudes including the Northwest Territories, norther Yukon, and central Saskatchewan. Correlations between temperature and black spruce in high latitudes were the lowest, while those in middle latitudes were the highest. The effect of precipitation on black spruce was not significant in western Canadian boreal forests. Climate change was found to negatively affect the growth of black spruce, possibly due to its intolerance to drought, resource competition, and temperature stress. In the future, the number and size of black spruce in forests of western Canada are expected to continue to decline if climate change trends continue.

    URI

    https://knowledgecommons.lakeheadu.ca/handle/2453/4937

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