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Species diversity and floristic relationships of the understory vegetation in black spruce and trembling aspen stands in the boreal forest of British Columbia

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Title: Species diversity and floristic relationships of the understory vegetation in black spruce and trembling aspen stands in the boreal forest of British Columbia
Author: Klinka, Karel; Qian, H.; Krestov, Pavel; Chourmouzis, Christine
Subject Keywords Black spruce;Boreal white and black spruce zone;Diversity;Humus form;Nutrients;Plant diversity;Sub-boreal spruce;Site quality;Trembling aspen;Understory vegetation
Issue Date: 2001
Publicly Available in cIRcle 2008-04-23
Publisher Forest Sciences Department, University of British Columbia
Series/Report no. Scientia Silvica extension series, 1209-952X, no. 32
Abstract: The boreal forest is confined to the Northern Hemisphere and is the most continuous and extensive forest in the world. In North America boreal forest extends from the Pacific to Atlantic coast spanning over 10° latitude. White spruce (Picea glauca (Moench) Voss), black spruce (P. mariana (Mill.) B.S.P.), and trembling aspen (Populus tremuloides Michx.) are among the dominant tree species. Black spruce and trembling aspen may form pure stands and occupy similar sites as their edaphic amplitudes overlap; however, spruce is rare on water-deficient sites and aspen does not tolerate excess water. Despite many studies conducted in the North American boreal forest, little is known about relationships between the boreal understory vegetation and softwood or hardwood canopy species in different climate regions. Furthermore, the variation in species diversity and succession between the stands dominated by coniferous trees and those dominated by broadleaved trees within the same region is unknown. The objectives of this study are to determine (1) the difference in the species diversity and floristic composition of understory vegetation between black spruce and trembling aspen stands within the same climatic region, and (2) how the species diversity and floristic composition of understory vegetation in each stand type vary with climate, and soil moisture and soil nutrient conditions.
Affiliation: Forest Sciences, Dept of
URI: http://hdl.handle.net/2429/762
Peer Review Status: Peer-Reviewed

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