Articles | Volume 2, issue 3
SOIL, 2, 403–419, 2016
https://doi.org/10.5194/soil-2-403-2016
SOIL, 2, 403–419, 2016
https://doi.org/10.5194/soil-2-403-2016

Original research article 12 Aug 2016

Original research article | 12 Aug 2016

Soil CO2 efflux in an old-growth southern conifer forest (Agathis australis) – magnitude, components and controls

Luitgard Schwendenmann and Cate Macinnis-Ng

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Latest update: 16 Jun 2021
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Short summary
This is the first study quantifying total soil CO2 efflux, heterotrophic and autotrophic respiration in an old-growth kauri forest. Root biomass explained a high proportion of the spatial variation suggesting that soil CO2 efflux in this forest is not only directly affected by the amount of autotrophic respiration but also by the supply of C through roots and mycorrhiza. Our findings also suggest that biotic factors such as tree structure should be investigated in soil carbon related studies.