Abstract
Leymus chinensis is a perennial rhizomatous clonal plant with strong tolerance to mowing, grazing, drought, and salt-alkali. However, with patchy soil environment, how mowing affect the photosynthesis of L. chinensis in heterogeneous patches is largely unknown. In this experiment, we tested the effects of mowing intensity (0, 35%, and 70% removal of aboveground biomass) on plant photosynthesis under different heterogeneous patches with different saline-alkali soil. We found that moderate concentrations of salt-alkali under heterogeneous patches have no significant effect on the photosynthesis of L. chinensis . Moderate mowing can maintain photosynthesis under no heterogeneity soil and moderate salt-alkali patch condition. In addition, heavy mowing and high salt-alkali soil under heterogeneous patches both inhibited net photosynthetic rate (PN) and transpiration rate (E), reduced leaf area, and plant height. L. chinensis responded to extreme soil conditions and strong disturbance by increasing water-use efficiency (WUE), reducing relative water content (RWC), and changing stomatal conductance (Gsw). Therefore, our results imply that moderate grazing or mowing can be used to maintain the productivity and economic benefits of grassland when the soil heterogeneous patches with moderate saline-alkali conditions.
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Claims 10
Claim · model-written summary
Moderate salt-alkali concentrations under heterogeneous patches had no significant effect on photosynthesis of Leymus chinensis.
- Taxon
- Leymus chinensisLeymus chinensise0
- Treatment
- moderate concentrations of salt-alkali under heterogeneous patchese1
- Outcome
- photosynthesise1
- Direction
- no significant effecte1
Not reportedComparator
Verbatim
e0“Leymus chinensis is a perennial rhizomatous clonal plant with strong tolerance to mowing, grazing, drought, and salt-alkali.”
e1“We found that moderate concentrations of salt-alkali under heterogeneous patches have no significant effect on the photosynthesis of L. chinensis .”
Claim · model-written summary
Moderate mowing maintained photosynthesis of Leymus chinensis under no-heterogeneity soil and moderate salt-alkali patch conditions.
- Taxon
- Leymus chinensisLeymus chinensise0
- Treatment
- Moderate mowinge2
- Outcome
- photosynthesise2
- Direction
- maintaine2
- Qualifier
- under no heterogeneity soil and moderate salt-alkali patch conditione2
Not reportedComparator
Verbatim
e0“Leymus chinensis is a perennial rhizomatous clonal plant with strong tolerance to mowing, grazing, drought, and salt-alkali.”
e2“Moderate mowing can maintain photosynthesis under no heterogeneity soil and moderate salt-alkali patch condition.”
Claim · model-written summary
Heavy mowing inhibited net photosynthetic rate and transpiration rate of Leymus chinensis.
- Taxon
- Leymus chinensisLeymus chinensise0
- Treatment
- heavy mowinge3
- Outcome
- net photosynthetic rate (PN) and transpiration rate (E)e3
- Direction
- inhibitede3
Not reportedComparator
Verbatim
e0“Leymus chinensis is a perennial rhizomatous clonal plant with strong tolerance to mowing, grazing, drought, and salt-alkali.”
e3“heavy mowing and high salt-alkali soil under heterogeneous patches both inhibited net photosynthetic rate (PN) and transpiration rate (E)”
Claim · model-written summary
High salt-alkali soil under heterogeneous patches inhibited net photosynthetic rate and transpiration rate of Leymus chinensis.
- Taxon
- Leymus chinensisLeymus chinensise0
- Treatment
- high salt-alkali soil under heterogeneous patchese3
- Outcome
- net photosynthetic rate (PN) and transpiration rate (E)e3
- Direction
- inhibitede3
Not reportedComparator
Verbatim
e0“Leymus chinensis is a perennial rhizomatous clonal plant with strong tolerance to mowing, grazing, drought, and salt-alkali.”
e3“heavy mowing and high salt-alkali soil under heterogeneous patches both inhibited net photosynthetic rate (PN) and transpiration rate (E)”
Claim · model-written summary
Heavy mowing reduced leaf area and plant height of Leymus chinensis.
- Taxon
- Leymus chinensisLeymus chinensise0
- Treatment
- heavy mowinge4
- Outcome
- leaf area, and plant heighte4
- Direction
- reducede4
Not reportedComparator
Verbatim
e0“Leymus chinensis is a perennial rhizomatous clonal plant with strong tolerance to mowing, grazing, drought, and salt-alkali.”
e4“heavy mowing and high salt-alkali soil under heterogeneous patches both inhibited net photosynthetic rate (PN) and transpiration rate (E), reduced leaf area, and plant height”
Claim · model-written summary
High salt-alkali soil under heterogeneous patches reduced leaf area and plant height of Leymus chinensis.
- Taxon
- Leymus chinensisLeymus chinensise0
- Treatment
- high salt-alkali soil under heterogeneous patchese4
- Outcome
- leaf area, and plant heighte4
- Direction
- reducede4
Not reportedComparator
Verbatim
e0“Leymus chinensis is a perennial rhizomatous clonal plant with strong tolerance to mowing, grazing, drought, and salt-alkali.”
e4“heavy mowing and high salt-alkali soil under heterogeneous patches both inhibited net photosynthetic rate (PN) and transpiration rate (E), reduced leaf area, and plant height”
Claim · model-written summary
Leymus chinensis responded to extreme soil conditions and strong disturbance by increasing water-use efficiency.
- Taxon
- L. chinensisLeymus chinensise5
- Treatment
- extreme soil conditions and strong disturbancee5
- Outcome
- water-use efficiency (WUE)e5
- Direction
- increasinge5
Not reportedComparator
Verbatim
e0“Leymus chinensis is a perennial rhizomatous clonal plant with strong tolerance to mowing, grazing, drought, and salt-alkali.”
e5“L. chinensis responded to extreme soil conditions and strong disturbance by increasing water-use efficiency (WUE), reducing relative water content (RWC), and changing stomatal conductance (Gsw).”
Claim · model-written summary
Leymus chinensis responded to extreme soil conditions and strong disturbance by reducing relative water content.
- Taxon
- L. chinensisLeymus chinensise5
- Treatment
- extreme soil conditions and strong disturbancee5
- Outcome
- relative water content (RWC)e5
- Direction
- reducinge5
Not reportedComparator
Verbatim
e0“Leymus chinensis is a perennial rhizomatous clonal plant with strong tolerance to mowing, grazing, drought, and salt-alkali.”
e5“L. chinensis responded to extreme soil conditions and strong disturbance by increasing water-use efficiency (WUE), reducing relative water content (RWC), and changing stomatal conductance (Gsw).”
Claim · model-written summary
Leymus chinensis responded to extreme soil conditions and strong disturbance by changing stomatal conductance.
- Taxon
- L. chinensisLeymus chinensise5
- Treatment
- extreme soil conditions and strong disturbancee5
- Outcome
- stomatal conductance (Gsw)e5
- Direction
- changinge5
Not reportedComparator
Verbatim
e0“Leymus chinensis is a perennial rhizomatous clonal plant with strong tolerance to mowing, grazing, drought, and salt-alkali.”
e5“L. chinensis responded to extreme soil conditions and strong disturbance by increasing water-use efficiency (WUE), reducing relative water content (RWC), and changing stomatal conductance (Gsw).”
Claim · model-written summary
Moderate grazing or mowing can be used to maintain grassland productivity and economic benefits where moderate saline-alkali heterogeneous patches occur (author recommendation).
- Taxon
- Leymus chinensisLeymus chinensise0
- Outcome
- moderate grazing or mowing can be used to maintain the productivity and economic benefits of grasslande6
Verbatim
e0“Leymus chinensis is a perennial rhizomatous clonal plant with strong tolerance to mowing, grazing, drought, and salt-alkali.”
e6“moderate grazing or mowing can be used to maintain the productivity and economic benefits of grassland when the soil heterogeneous patches with moderate saline-alkali conditions”
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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.