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Nitrogen and phosphorus constrain the CO2 fertilization of global plant biomass
- Source :
- Nature Climate Change, vol 9, iss 9, Nature Climate Change 9 (2019), Nature Climate Change, Dipòsit Digital de Documents de la UAB, Universitat Autònoma de Barcelona, Nature Climate Change, 9, 684-689, Nature climate change, Nature Climate Change, 9, 684-689. NATURE PUBLISHING GROUP, Nature Climate Change, 9(9), 684-689. Nature Publishing Group
- Publication Year :
- 2019
- Publisher :
- eScholarship, University of California, 2019.
-
Abstract
- Elevated CO2 (eCO(2)) experiments provide critical information to quantify the effects of rising CO2 on vegetation 1-6 . Many eCO(2) experiments suggest that nutrient limitations modulate the local magnitude of the eCO(2) effect on plant biomass(1,3,5), but the global extent of these limitations has not been empirically quantified, complicating projections of the capacity of plants to take up CO27,9. Here, we present a data-driven global quantification of the eCO(2) effect on biomass based on 138 eCO(2) experiments. The strength of CO2 fertilization is primarily driven by nitrogen (N) in similar to 65% of global vegetation and by phosphorus (P) in similar to 25% of global vegetation, with N- or P-limitation modulated by mycorrhizal association. Our approach suggests that CO2 levels expected by 2100 can potentially enhance plant biomass by 12 +/- 3% above current values, equivalent to 59 +/- 13 PgC. The globalscale response to eCO(2) we derive from experiments is similar to past changes in greenness(9) and bio-mass(10) with rising CO2, suggesting that CO2 will continue to stimulate plant biomass in the future despite the constraining effect of soil nutrients. Our research reconciles conflicting evidence on CO2 fertilization across scales and provides an empirical estimate of the biomass sensitivity to eCO(2) that may help to constrain climate projections.
- Subjects :
- 010504 meteorology & atmospheric sciences
Environmental Studies
01 natural sciences
Physical Geography and Environmental Geoscience
CARBON
Human fertilization
Nutrient
Meteorology & Atmospheric Sciences
0502 Environmental Science and Management
2. Zero hunger
0303 health sciences
Biomass (ecology)
Physics
FOREST PRODUCTIVITY
Vegetation
Nitrogen
Chemistry
Physical Sciences
GROWTH
0406 Physical Geography and Environmental Geoscience
Ecosystem ecology
Life Sciences & Biomedicine
Bodemscheikunde en Chemische Bodemkwaliteit
Environmental Science and Management
chemistry.chemical_element
Environmental Sciences & Ecology
Environmental Science (miscellaneous)
Atmospheric Sciences
03 medical and health sciences
ENHANCEMENT
Life Science
ATMOSPHERIC CO2
Biology
METAANALYSIS
030304 developmental biology
0105 earth and related environmental sciences
Science & Technology
WIMEK
Phosphorus
Biogeochemistry
MOJAVE DESERT
15. Life on land
CLIMATE
Climate Action
Agronomy
chemistry
13. Climate action
Environmental science
0401 Atmospheric Sciences
ELEVATED CO2
Environmental Sciences
Soil Chemistry and Chemical Soil Quality
Social Sciences (miscellaneous)
RESPONSES
Subjects
Details
- ISSN :
- 1758678X
- Database :
- OpenAIRE
- Journal :
- Nature Climate Change, vol 9, iss 9, Nature Climate Change 9 (2019), Nature Climate Change, Dipòsit Digital de Documents de la UAB, Universitat Autònoma de Barcelona, Nature Climate Change, 9, 684-689, Nature climate change, Nature Climate Change, 9, 684-689. NATURE PUBLISHING GROUP, Nature Climate Change, 9(9), 684-689. Nature Publishing Group
- Accession number :
- edsair.doi.dedup.....4dbc1e804cd982a75dc14533acad4b44