Abstract
Industrial air pollution, particularly cement dust, affects the leaf water status and resource utilisation and finally decreases primary production. Evaluating the relative water content (RWC), leaf mass per unit area (LMA), specific leaf area (SLA), and leaf water per unit area (LWA) helps selecting more tolerant species for dusty polluted areas. In this study, we compare two species of Quercus castaneifolia C.A.Mey and Carpinus betulus L. in a polluted site (PL) around a cement factory, and a unpolluted site (UPL) in Mazandaran province, Northern Iran. Ten individual trees of each species were tagged at each site, and twenty fully developed leaves were collected for further analysis and calculation. Based on the results, RWC and LWA were significantly lower in the PL site (61.0% and 0.0075 g·cm–2, respectively) compared to the UPL site (71.1% and 0.0114 g·cm–2, respectively) for Q. castaneifolia. However, no significant differences were observed in selected variables between PL and UPL sites for C. betulus. Among the studied variables, SLA was significantly higher in C. betulus (259.1 cm2·g–1) compared to Q. castaneifolia (189.8 cm2·g–1). Our results indicated that C. betulus responds better to dust pollution in terms of leaf water variables.
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Claims 5
Claim · model-written summary
Relative water content of Q. castaneifolia was significantly lower at the polluted site (61.0%) than the unpolluted site (71.1%).
- Taxon
- Quercus castaneifolia C.A.Mey
Quercus castaneifoliat0 - Treatment
- polluted site (PL)e2
- Outcome
- relative water content (RWC)e4
- Direction
- lowere0
- Value
- 61.0%e1
- Qualifier
- 71.1%e5
- Comparator
- unpolluted site (UPL)e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly lower”
e1“61.0%”
e2“polluted site (PL)”
e3“unpolluted site (UPL)”
e4“relative water content (RWC)”
e5“71.1%”
t0“Quercus castaneifolia C.A.Mey”
Claim · model-written summary
Leaf water per unit area of Q. castaneifolia was significantly lower at the polluted site (0.0075 g/cm2) than the unpolluted site.
- Taxon
- Quercus castaneifolia C.A.MeyQuercus castaneifoliat0
- Treatment
- polluted site (PL)e2
- Outcome
- leaf water per unit area (LWA)e4
- Direction
- lowere0
- Value
- 0.0075e1
- Comparator
- unpolluted site (UPL)e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly lower”
e1“0.0075”
e2“polluted site (PL)”
e3“unpolluted site (UPL)”
e4“leaf water per unit area (LWA)”
t0“Quercus castaneifolia C.A.Mey”
Claim · model-written summary
No significant differences in the selected variables were observed between polluted and unpolluted sites for C. betulus.
- Taxon
- Carpinus betulus L.
Carpinus betulust1 - Treatment
- polluted site (PL)e2
- Outcome
- selected variablese1
- Direction
- no_changeinferrede0
- Comparator
- unpolluted site (UPL)e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant differences were observed”
e1“selected variables”
e2“polluted site (PL)”
e3“unpolluted site (UPL)”
t1“Carpinus betulus L.”
Claim · model-written summary
Specific leaf area was significantly higher in C. betulus (259.1) than in Q. castaneifolia (189.8).
- Taxon
- Carpinus betulus L.Carpinus betulust1
- Outcome
- specific leaf area (SLA)e2
- Direction
- highere0
- Value
- 259.1e1
- Qualifier
- 189.8e3
- Comparator
- Quercus castaneifolia C.A.Meyt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly higher”
e1“259.1”
e2“specific leaf area (SLA)”
e3“189.8”
t0“Quercus castaneifolia C.A.Mey”
t1“Carpinus betulus L.”
Claim · model-written summary
C. betulus responds better to dust pollution than Q. castaneifolia in terms of leaf water variables.
- Taxon
- Carpinus betulus L.Carpinus betulust1
- Outcome
- responds bettere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“responds better”
t1“Carpinus betulus L.”