Paper · 2006 · Journal of Soil and Water Conservation

Effect of Compound Pollution of Zn-Cd in Purple Soil on Lettuce under Simulating Acid Rain

Peng Li

11
claims
22
verbatim quotes
0
citations
1
research areas
—
Not open access

Abstract

Pot experiments under simulating acid rain were conducted to study the effect of Cd-Zn compound polluted on lettuce(Lactuca sativa var.angustana Irish) in purple soil.The results showed that Zn counteracted Cd to improve the yield when the concentration of Zn was low,Zn also cooperated with Cd to reduce the yield when the concentration of Zn was high.The Cd-Zn compound pollution indicated that Zn promoted the absorption of Cd by the lettuce,and Cd restrained the absorption of Cd by the lettuce,under the condition of low Zn level;Zn restrained the absorption of Cd by the lettuce,and Cd promoted the absorption of Cd by the lettuce,under the condition of high Zn level.Acid rain restrained the growth of lettuce.Biology quantity of lettuce and cumulating coefficient of Zn, Cd in lettuce increased when pH of the acid rain increased,and cumulating ability of Cd was bigger than that of Zn,which resulted in heavy metal toxicity of edible part increasing.

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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 11

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At low Zn concentration, Zn counteracted Cd and improved lettuce yield.

Taxon
lettuceLactuca sativae2
Material
Lactuca sativa var.angustana Irishe2
Treatment
Zne1
Outcome
yielde1
Direction
improvee1
Qualifier
when the concentration of Zn was lowe1
Setting
purple soile2

Not reportedComparator

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e1

“Zn counteracted Cd to improve the yield when the concentration of Zn was low”

✓ located verbatim in the source · abstract, characters 191–267 · show in text ↑
e2

“Pot experiments under simulating acid rain were conducted to study the effect of Cd-Zn compound polluted on lettuce(Lactuca sativa var.angustana Irish) in purple soil”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At high Zn concentration, Zn cooperated with Cd and reduced lettuce yield.

Taxon
lettuceLactuca sativae2
Treatment
Zne3
Outcome
yielde3
Direction
reducee3
Qualifier
when the concentration of Zn was highe3

Not reportedComparator

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e2

“Pot experiments under simulating acid rain were conducted to study the effect of Cd-Zn compound polluted on lettuce(Lactuca sativa var.angustana Irish) in purple soil”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e3

“Zn also cooperated with Cd to reduce the yield when the concentration of Zn was high”

✓ located verbatim in the source · abstract, characters 268–352 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At low Zn level, Zn promoted the absorption of Cd by lettuce.

Taxon
lettuceLactuca sativae2
Treatment
Zne4
Outcome
absorption of Cd by the lettucee4
Direction
promotede4
Qualifier
under the condition of low Zn levele4

Not reportedComparator

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e2

“Pot experiments under simulating acid rain were conducted to study the effect of Cd-Zn compound polluted on lettuce(Lactuca sativa var.angustana Irish) in purple soil”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e4

“Zn promoted the absorption of Cd by the lettuce,and Cd restrained the absorption of Cd by the lettuce,under the condition of low Zn level”

✓ located verbatim in the source · abstract, characters 397–534 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At low Zn level, Cd restrained the absorption of Cd by lettuce.

Taxon
lettuceLactuca sativae2
Treatment
Cde4
Outcome
absorption of Cd by the lettucee4
Direction
restrainede4
Qualifier
under the condition of low Zn levele4

Not reportedComparator

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e2

“Pot experiments under simulating acid rain were conducted to study the effect of Cd-Zn compound polluted on lettuce(Lactuca sativa var.angustana Irish) in purple soil”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e4

“Zn promoted the absorption of Cd by the lettuce,and Cd restrained the absorption of Cd by the lettuce,under the condition of low Zn level”

✓ located verbatim in the source · abstract, characters 397–534 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At high Zn level, Zn restrained the absorption of Cd by lettuce.

Taxon
lettuceLactuca sativae2
Treatment
Zne5
Outcome
absorption of Cd by the lettucee5
Direction
restrainede5
Qualifier
under the condition of high Zn levele5

Not reportedComparator

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e2

“Pot experiments under simulating acid rain were conducted to study the effect of Cd-Zn compound polluted on lettuce(Lactuca sativa var.angustana Irish) in purple soil”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e5

“Zn restrained the absorption of Cd by the lettuce,and Cd promoted the absorption of Cd by the lettuce,under the condition of high Zn level”

✓ located verbatim in the source · abstract, characters 535–673 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At high Zn level, Cd promoted the absorption of Cd by lettuce.

Taxon
lettuceLactuca sativae2
Treatment
Cde5
Outcome
absorption of Cd by the lettucee5
Direction
promotede5
Qualifier
under the condition of high Zn levele5

Not reportedComparator

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e2

“Pot experiments under simulating acid rain were conducted to study the effect of Cd-Zn compound polluted on lettuce(Lactuca sativa var.angustana Irish) in purple soil”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e5

“Zn restrained the absorption of Cd by the lettuce,and Cd promoted the absorption of Cd by the lettuce,under the condition of high Zn level”

✓ located verbatim in the source · abstract, characters 535–673 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Simulated acid rain restrained the growth of lettuce.

Taxon
lettuceLactuca sativae2
Treatment
Acid raine6
Outcome
growthe6
Direction
restrainede6

Not reportedComparator

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e2

“Pot experiments under simulating acid rain were conducted to study the effect of Cd-Zn compound polluted on lettuce(Lactuca sativa var.angustana Irish) in purple soil”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e6

“Acid rain restrained the growth of lettuce”

✓ located verbatim in the source · abstract, characters 674–716 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher pH of the acid rain increased the biomass of lettuce.

Taxon
lettuceLactuca sativae2
Treatment
pH of the acid raine7
Outcome
Biology quantity of lettucee7
Direction
increasede7

Not reportedComparator

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e2

“Pot experiments under simulating acid rain were conducted to study the effect of Cd-Zn compound polluted on lettuce(Lactuca sativa var.angustana Irish) in purple soil”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e7

“Biology quantity of lettuce and cumulating coefficient of Zn, Cd in lettuce increased when pH of the acid rain increased”

✓ located verbatim in the source · abstract, characters 717–837 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Higher pH of the acid rain increased the cumulating coefficients of Zn and Cd in lettuce.

Taxon
lettuceLactuca sativae2
Treatment
pH of the acid raine7
Outcome
cumulating coefficient of Zn, Cd in lettucee7
Direction
increasede7

Not reportedComparator

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e2

“Pot experiments under simulating acid rain were conducted to study the effect of Cd-Zn compound polluted on lettuce(Lactuca sativa var.angustana Irish) in purple soil”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e7

“Biology quantity of lettuce and cumulating coefficient of Zn, Cd in lettuce increased when pH of the acid rain increased”

✓ located verbatim in the source · abstract, characters 717–837 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

The cumulating ability of Cd in lettuce was greater than that of Zn.

Taxon
lettuceLactuca sativae2
Outcome
cumulating ability of Cde6
Direction
biggere6
Comparator
Zne6

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e2

“Pot experiments under simulating acid rain were conducted to study the effect of Cd-Zn compound polluted on lettuce(Lactuca sativa var.angustana Irish) in purple soil”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e6

“cumulating ability of Cd was bigger than that of Zn,which resulted in heavy metal toxicity of edible part increasing”

✓ located verbatim in the source · abstract, characters 842–958 · show in text ↑
Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Greater cumulating ability of Cd was associated with increasing heavy metal toxicity of the edible part of lettuce.

Taxon
lettuceLactuca sativae2
Compound
Cde6
Outcome
heavy metal toxicity of edible parte6
Direction
increasinge6

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e2

“Pot experiments under simulating acid rain were conducted to study the effect of Cd-Zn compound polluted on lettuce(Lactuca sativa var.angustana Irish) in purple soil”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e6

“cumulating ability of Cd was bigger than that of Zn,which resulted in heavy metal toxicity of edible part increasing”

✓ located verbatim in the source · abstract, characters 842–958 · show in text ↑

zinc atom · yield · Lactuca sativa (garden lettuce)Positive and negative results

8 papers: 3 positive, 5 negative or no effect

2 papers in the same direction as this paper · 5 in the opposite direction

  1. negative
  2. negative
  3. no effect

4 papers more in this group

See all 8 papers →

cadmium atom · nutrient: content · Lactuca sativa (garden lettuce)Positive and negative results

9 papers: 1 positive, 8 negative or no effect

8 in the opposite direction

  1. negative
  2. negative
  3. no effect

5 papers more in this group

See all 9 papers →

zinc atom · nutrient: content · Lactuca sativa (garden lettuce)Positive and negative results

16 papers: 14 positive, 2 negative or no effect

13 papers in the same direction as this paper · 2 in the opposite direction

  1. negative
  2. negative
  3. positive

12 papers more in this group

See all 16 papers →

ph · nutrient: content · Lactuca sativa (garden lettuce)Positive and negative results

9 papers: 5 positive, 4 negative or no effect

3 papers in the same direction as this paper · 5 in the opposite direction

  1. positive
  2. positive
  3. positive

5 papers more in this group

See all 9 papers →

rainfall · nutrient: content · Lactuca sativa (garden lettuce)Results agree

2 papers: 0 positive, 2 negative or no effect

1 paper in the same direction as this paper

  1. negative
See all 2 papers →

rainfall · growth · Lactuca sativa (garden lettuce)Results agree

4 papers: 0 positive, 4 negative or no effect

3 papers in the same direction as this paper

  1. negative
  2. negative
  3. no effect
See all 4 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.