20151127

Author : Ruess, R. W. Hendrick, R. L. Burton, A. J. Pregitzer, K. S. Sveinbjornsson, B. Allen, M. E. Maurer, G. E.
Year : 2003
Title : Coupling fine root dynamics with ecosystem carbon cycling in black spruce forests of interior Alaska
Journal : Ecological Monographs
Comment 

 One of the most interesting findings from this study is the relatively high rate of fine root production in floodplain black spruce forests. Annual production of fine roots averaged 228 ± 75 g biomass m-2 yr-1, constituting ;56% of total stand production. Above ground production of trees (50 ± 14 g biomass m-2 yr-1, 13%) and shrubs (40 ± 2 g biomass m-2 yr-1, 11%) contributed similarly to total production, while mosses (73 ± 14 g biomass m-2 yr-1, 20%) accounted for the largest component of above ground production. 

 Soil temperature had a strong control over both soil respiration (Q10 = 2.21 ± 0.31) and root respiration (Q10 = 2.30 ± 0.37). During the growing season (15 May to 15 September), ; 56% of soil CO2 efflux (580 6 40 gC m-2) was derived from fine root respiration (329 6 54 gC m-2).

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