Trends and methodological impacts in soil CO 2 efflux partitioning: A metaanalytical review

Abstract Partitioning soil carbon dioxide (CO 2 ) efflux ( R S ) into autotrophic ( R A ; including plant roots and closely associated organisms) and heterotrophic ( R H ) components has received considerable attention, as differential responses of these components to environmental change have profound implications for the soil and ecosystem C balance. The increasing number of partitioning studies allows a more detailed analysis of experimental constraints than was previously possible. We present results of an exhaustive literature search of partitioning studies and analyse global trends in flux partitioning between biomes and ecosystem types by means of a metaanalysis. Across all data, an overall decline in…

• EC
  European Commission