Abstract
Field experiment was carried out in the spring of 2008 in order to investigate the effects of increased UV-B radiation on the temperature sensitivity of wheat plant respiration and soil respiration from elongation to flowering periods. Static chamber-gas chromatography method was used to measure ecosystem respiration and soil respiration under 20% UV-B radiation increase and control. Environmental factors such as temperature and moisture were also measured. Results indicated that supplemental UV-B radiation inhibited the ecosystem respiration and soil respiration from wheat elongation to flowering periods, and the inhibition effect was more obvious for soil respiration than for ecosystem respiration. Ecosystem respiration rates, on daily average, were 9%, 9%, 3%, 16% and 30% higher for control than for UV-B treatment forthe five measurement days, while soil respiration rates were 99%, 93%, 106%, 38% and 10% higher for control than for UV-B treatment. The Q10s (temperature sensitivity coefficients) for plant respiration under control and UV-B treatments were 1.79 and 1.59, respectively, while the Q10s for soil respiration were 1.38 and 1.76, respectively. The Q10s for ecosystem respiration were 1.65 and 1.63 under CK and UV-B treatments, respectively. Supplemental UV-B radiation caused a lower Q10 for plant respiration and a higher Q10 for soil respiration, although no significant effect of supplemental UV-B radiation on the Q10 for ecosystem respiration was found.
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Claims 7
Claim · model-written summary
Supplemental UV-B inhibited ecosystem respiration during wheat elongation to flowering.
- Taxon
- wheat
Triticum aestivumt0 - Organ / stage
- wheat elongation to flowering periodse0
- Treatment
- supplemental UV-B radiatione0
- Outcome
- ecosystem respiratione0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“supplemental UV-B radiation inhibited the ecosystem respiration and soil respiration from wheat elongation to flowering periods”
t0“wheat”
Claim · model-written summary
Supplemental UV-B inhibited soil respiration more strongly than ecosystem respiration.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- soil respiratione0
- Direction
- more obviouse0
- Comparator
- ecosystem respiratione0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the inhibition effect was more obvious for soil respiration than for ecosystem respiration”
t0“wheat”
Claim · model-written summary
Control ecosystem respiration rates exceeded UV-B treatment rates by 9%, 9%, 3%, 16% and 30% across five days.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- UV-B treatmente0
- Outcome
- Ecosystem respiration ratese0
- Direction
- highere0
- Value
- 9%, 9%, 3%, 16% and 30%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ecosystem respiration rates, on daily average, were 9%, 9%, 3%, 16% and 30% higher for control than for UV-B treatment forthe five measurement days”
t0“wheat”
Claim · model-written summary
Control soil respiration rates exceeded UV-B treatment rates by 99%, 93%, 106%, 38% and 10% across five days.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- UV-B treatmente0
- Outcome
- soil respiration ratese0
- Direction
- highere0
- Value
- 99%, 93%, 106%, 38% and 10%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil respiration rates were 99%, 93%, 106%, 38% and 10% higher for control than for UV-B treatment”
t0“wheat”
Claim · model-written summary
UV-B lowered wheat plant respiration Q10 from 1.79 to 1.59.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- UV-B treatmentse0
- Outcome
- Q10s (temperature sensitivity coefficients) for plant respiratione0
- Direction
- lowerinferrede0
- Value
- 1.59e0
- Qualifier
- 1.79e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Q10s (temperature sensitivity coefficients) for plant respiration under control and UV-B treatments were 1.79 and 1.59, respectively”
t0“wheat”
Claim · model-written summary
UV-B increased soil respiration Q10 from 1.38 to 1.76.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- Q10s for soil respiratione0
- Value
- 1.76e0
- Qualifier
- 1.38e0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Q10s for soil respiration were 1.38 and 1.76, respectively”
t0“wheat”
Claim · model-written summary
UV-B had no significant effect on ecosystem respiration Q10.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- supplemental UV-B radiatione0
- Outcome
- Q10 for ecosystem respiratione0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Supplemental UV-B radiation caused a lower Q10 for plant respiration and a higher Q10 for soil respiration, although no significant effect of supplemental UV-B radiation on the Q10 for ecosystem respiration was found.”
t0“wheat”
The same questions in other papers
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1 paper more in this group
See all 5 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.