Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Rising Atmospheric CO2 Reduces Sequestration of Root-Derived Soil Carbon.
AU - Heath, James
AU - Ayres, Edward
AU - Possell, Malcolm
AU - Bardgett, Richard D.
AU - Black, Helaina I. J.
AU - Grant, Helen
AU - Ineson, Phil
AU - Kerstiens, Gerhard
PY - 2005/9/9
Y1 - 2005/9/9
N2 - Forests have a key role as carbon sinks, which could potentially mitigate the continuing increase in atmospheric carbon dioxide concentration and associated climate change. We show that carbon dioxide enrichment, although causing short-term growth stimulation in a range of European tree species, also leads to an increase in soil microbial respiration and a marked decline in sequestration of root-derived carbon in the soil. These findings indicate that, should similar processes operate in forest ecosystems, the size of the annual terrestrial carbon sink may be substantially reduced, resulting in a positive feedback on the rate of increase in atmospheric carbon dioxide concentration.
AB - Forests have a key role as carbon sinks, which could potentially mitigate the continuing increase in atmospheric carbon dioxide concentration and associated climate change. We show that carbon dioxide enrichment, although causing short-term growth stimulation in a range of European tree species, also leads to an increase in soil microbial respiration and a marked decline in sequestration of root-derived carbon in the soil. These findings indicate that, should similar processes operate in forest ecosystems, the size of the annual terrestrial carbon sink may be substantially reduced, resulting in a positive feedback on the rate of increase in atmospheric carbon dioxide concentration.
KW - ORGANIC-MATTER
KW - ELEVATED CO2
KW - DIOXIDE
KW - RESPONSES
KW - FOREST
KW - RESPIRATION
KW - TURNOVER
KW - NITROGEN
KW - OZONE
KW - ECOSYSTEMS
U2 - 10.1126/science.1110700
DO - 10.1126/science.1110700
M3 - Journal article
VL - 309
SP - 1711
EP - 1713
JO - Science
JF - Science
SN - 0036-8075
IS - 5741
ER -