Abstract
In studies on plant responses to climate change more attention has been given to aboveground processes although carbon input by plants into the soil is a major flux in the global carbon cycle. The objective of study was to investigate the effects of elevated CO2 and temperature on carbon allocation and partitioning in different parts of plant, soil, and microbial biomass. An experiment was conducted on summer rape (Brassica napus L.) under increased levels of air temperature and atmospheric CO2 in controlled environment chambers. Results showed that the amount of leaf, stem and root carbon statistically significantly increased under elevated CO2 and temperature conditions. Microbial biomass carbon significantly increased by 11.2% and 13.5% under elevated CO2 and elevated CO2 and temperature, respectively, although soil carbon under both treatments decreased. It is concluded that carbon allocation is controlled under different climate conditions; however, elevated CO2 and temperature together will have a more significant effect for carbon allocation to different plant parts and microbial biomass carbon compared to elevated CO2 alone.
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Claims 8
Claim · model-written summary
Leaf carbon increased significantly under elevated CO2 and temperature.
- Taxon
- summer rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Treatment
- elevated CO2 and temperaturee0
- Outcome
- leafe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“the amount of leaf, stem and root carbon statistically significantly increased under elevated CO2 and temperature conditions.”
t0“summer rape”
Claim · model-written summary
Stem carbon increased significantly under elevated CO2 and temperature.
- Taxon
- summer rapeBrassica napust0
- Treatment
- elevated CO2 and temperaturee0
- Outcome
- steme0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the amount of leaf, stem and root carbon statistically significantly increased under elevated CO2 and temperature conditions.”
t0“summer rape”
Claim · model-written summary
Root carbon increased significantly under elevated CO2 and temperature.
- Taxon
- summer rapeBrassica napust0
- Treatment
- elevated CO2 and temperaturee0
- Outcome
- root carbone0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the amount of leaf, stem and root carbon statistically significantly increased under elevated CO2 and temperature conditions.”
t0“summer rape”
Claim · model-written summary
Microbial biomass carbon increased 11.2% under elevated CO2.
- Taxon
- summer rapeBrassica napust0
- Treatment
- elevated CO2e0
- Outcome
- Microbial biomass carbone0
- Direction
- increasede0
- Value
- 11.2%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microbial biomass carbon significantly increased by 11.2% and 13.5% under elevated CO2 and elevated CO2 and temperature, respectively, although soil carbon under both treatments decreased.”
t0“summer rape”
Claim · model-written summary
Microbial biomass carbon increased 13.5% under elevated CO2 and temperature.
- Taxon
- summer rapeBrassica napust0
- Treatment
- elevated CO2 and temperaturee0
- Outcome
- Microbial biomass carbone0
- Direction
- increasede0
- Value
- 13.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microbial biomass carbon significantly increased by 11.2% and 13.5% under elevated CO2 and elevated CO2 and temperature, respectively, although soil carbon under both treatments decreased.”
t0“summer rape”
Claim · model-written summary
Soil carbon decreased under elevated CO2.
- Taxon
- summer rapeBrassica napust0
- Treatment
- elevated CO2t0
- Outcome
- soil carbone0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“although soil carbon under both treatments decreased.”
t0“summer rape under elevated CO2 and air temperature”
Claim · model-written summary
Soil carbon decreased under elevated CO2 and temperature.
- Taxon
- summer rapeBrassica napust0
- Treatment
- elevated CO2 and air temperaturet0
- Outcome
- soil carbone0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“although soil carbon under both treatments decreased.”
t0“summer rape under elevated CO2 and air temperature”
Claim · model-written summary
Combined elevated CO2 and temperature had a larger effect on carbon allocation than elevated CO2 alone.
- Taxon
- summer rapeBrassica napust0
- Treatment
- elevated CO2 and temperaturee0
- Outcome
- carbon allocation to different plant parts and microbial biomass carbone0
- Direction
- more significante0
- Comparator
- elevated CO2 alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elevated CO2 and temperature together will have a more significant effect for carbon allocation to different plant parts and microbial biomass carbon compared to elevated CO2 alone.”
t0“summer rape”
The same questions in other papers
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- no effect
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5 papers in the same direction as this paper · 3 in the opposite direction
- positive
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See all 9 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.