Paper · 2004

IMPACTS OF OZONE CONCENTRATION CHANGES ON CROPS AND VEGETABLES IN CHINA

Zhi-guo Huo

9
claims
12
verbatim quotes
3
citations
2
research areas
—
Not open access

Abstract

The controlled simulation experiments revealed that ozone concentration increases cause various degrees of injury to leaves of crop and vegetable.The injury to vegetables is greater than that to crops.Ozone can dramatically affect stomatal conductance,photosynthetic rate and transpiration rate,and consequently the yield of crops.No matter how long exposure time was, stomatal conductance increased and photosynthetic and transpiration rates decreased with increases in ozone concentration.When ozone concentration was 100 nmol/mol,yields of rice and winter wheat declined by 27.1% and 60.5% respectively.When up to 200 nmol/mol,there was a significant reduction of yields:a decline up to 33.7% for rice and 81.3% for winter wheat.On the other hand,ozone benefits the improvement of grain quality such as amino acid and protein.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher.

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 9

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Higher ozone injured crop and vegetable leaves.

Taxon
crop and vegetablee0
Treatment
ozone concentration increasese0
Outcome
injury to leavese0

Not reportedComparatorDirection

Verbatim

e0

“ozone concentration increases cause various degrees of injury to leaves of crop and vegetable”

✓ located verbatim in the source · abstract, characters 52–145 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Ozone leaf injury was greater in vegetables than crops.

Taxon
vegetablese0
Outcome
injury to vegetablese0
Direction
greatere0
Comparator
cropse0

Verbatim

e0

“The injury to vegetables is greater than that to crops.”

✓ located verbatim in the source · abstract, characters 146–201 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Stomatal conductance increased with ozone concentration.

Taxon
crop and vegetablee1
Treatment
ozone concentratione0
Outcome
stomatal conductancee0
Direction
increasede0

Verbatim

e0

“stomatal conductance increased and photosynthetic and transpiration rates decreased with increases in ozone concentration”

✓ located verbatim in the source · abstract, characters 369–490 · show in text ↑
e1

“leaves of crop and vegetable”

✓ located verbatim in the source · abstract, characters 117–145 · show in text ↑
Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Photosynthetic and transpiration rates decreased with higher ozone.

Taxon
crop and vegetablee1
Treatment
ozone concentratione0
Outcome
photosynthetic and transpiration ratese0
Direction
decreasede0

Verbatim

e0

“photosynthetic and transpiration rates decreased with increases in ozone concentration”

✓ located verbatim in the source · abstract, characters 404–490 · show in text ↑
e1

“leaves of crop and vegetable”

✓ located verbatim in the source · abstract, characters 117–145 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At 100 nmol/mol ozone, rice yield declined 27.1%.

Treatment
ozone concentration was 100 nmol/mole0
Outcome
yieldse0
Direction
declinede0
Value
27.1%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“ozone concentration was 100 nmol/mol,yields of rice and winter wheat declined by 27.1% and 60.5% respectively”

✓ located verbatim in the source · abstract, characters 496–605 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At 100 nmol/mol ozone, winter wheat yield declined 60.5%.

Taxon
winter wheatTriticum aestivume0
Treatment
ozone concentration was 100 nmol/mole0
Outcome
yieldse0
Direction
declinede0
Value
60.5%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“ozone concentration was 100 nmol/mol,yields of rice and winter wheat declined by 27.1% and 60.5% respectively”

✓ located verbatim in the source · abstract, characters 496–605 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

At 200 nmol/mol ozone, rice yield declined up to 33.7%.

Treatment
200 nmol/mole0
Outcome
yieldse0
Direction
declinee0
Value
33.7%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“When up to 200 nmol/mol,there was a significant reduction of yields:a decline up to 33.7% for rice and 81.3% for winter wheat.”

✓ located verbatim in the source · abstract, characters 606–732 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

At 200 nmol/mol ozone, winter wheat yield declined 81.3%.

Taxon
winter wheatTriticum aestivume0
Treatment
200 nmol/mole0
Outcome
yieldse0
Direction
declinee0
Value
81.3%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“When up to 200 nmol/mol,there was a significant reduction of yields:a decline up to 33.7% for rice and 81.3% for winter wheat.”

✓ located verbatim in the source · abstract, characters 606–732 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ozone improved grain amino acid and protein quality.

Taxon
rice and winter wheatOryza sativaTriticum aestivume1
Treatment
ozonee0
Outcome
grain quality such as amino acid and proteine0
Direction
improvemente0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“ozone benefits the improvement of grain quality such as amino acid and protein.”

✓ located verbatim in the source · abstract, characters 750–829 · show in text ↑
e1

“rice and winter wheat”

✓ located verbatim in the source · abstract, characters 543–564 · show in text ↑

ozone · yield · Oryza sativa (rice)Results differ

39 papers: 7 positive, 32 negative or no effect

31 papers in the same direction as this paper · 7 in the opposite direction

  1. positive
  2. positive
  3. positive

35 papers more in this group

See all 39 papers →

ozone · yield · Triticum aestivum (wheat)Results differ

70 papers: 7 positive, 63 negative or no effect

62 papers in the same direction as this paper · 7 in the opposite direction

  1. positive
  2. positive
  3. positive

66 papers more in this group

See all 70 papers →

ozone · quality: protein · Oryza sativa (rice)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

1 paper in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
See all 3 papers →

ozone · quality: protein · Triticum aestivum (wheat)Positive and negative results

13 papers: 4 positive, 9 negative or no effect

3 papers in the same direction as this paper · 8 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. negative
  3. negative

9 papers more in this group

See all 13 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.