Partitioning of soil respiration into its autotrophic and heterotrophic components by means of tree-girdling in old boreal spruce forest

By P. Högberg, Bhupinderpal-Singh, M. O. Löfvenius, A. Nordgren. 2009

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Dynamics and pathways of autotrophic and heterotrophic soil CO2 efflux revealed by forest girdling (2011, result): “This is consistent with the results of earlier girdling experiments, where the decline inRS in girdling plots lasted between 2 and 4 weeks depending on the season during which girdling was carried out (Högberg et al. 2001, 2009; Subke et al. 2004).”
Tamm Review: On the nature of the nitrogen limitation to plant growth in Fennoscandian boreal forests (2017, background): “Such studies have suggested that the autotrophic component accounts for 50–65% of the total soil respiratory activity during the vegetation period in boreal forests (Högberg et al., 2001, 2009; Olsson et al., 2005).”
N and P fertilization reduced soil autotrophic and heterotrophic respiration in a young Cunninghamia lanceolata forest (2017, background): “Although Rs has been extensively studied in ecent decades, uncertainties on Rs intensity still arise, especially in ts definition as the sum of heterotrophic (Rh) and autotrophic (Ra) espiration (Subke et al., 2006 Högberg et al., 2009; Cheng et al., 015).”