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| Effects of light intensity and wind speed on transpirationrate of potted Eucalyptus saplings |
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| DOI：10.16768/j.issn.1004-874X.2017.02.012 |
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| Abstract: |
| In order to investigate the effects of light intensity，wind speed and leaf age on transpiration of potted
Eucalyptus saplings，Eucalyptus saplings transpiration rate were observed with pot experiments，in which light
intensity and wind speed were controlled. Meteorological factors were monitored simultaneously. The results showed
that: transpiration rate of Eucalyptus increased as the light intensity enhancing. When the light intensity was more
than 720 μmol/m2·s，the transpiration rate began to decline. The peak value emerged in different periods under
different light intensities. The times of peak value emerging were mainly affected by light intensity. The peak values
were 0.018 g/cm2·h to 0.024 g/cm2·h when light intensities ranged from 500 μmol/m2·s to 720 μmol/m2·s.
The transpiration of young leaves were easy restrained by strong light，but for the old leaves，the transpiration were
restrained under low light level. No significant change was found in the influence of wind speed on Eucalyptus saplings
transpiration under the conditions of low air temperature and low tree transpiration rate. Positive correlations were
found between the vapor pressure deficit，light intensity，air temperature and the Eucalyptus saplings transpiration
rate. There was a negative correlation between air humidity and transpiration rates. |
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