Effects of automobile exhaust on chlorophyll fluorescence characters of four northern deciduous trees

Abstract

Abstract: The effects of automobile exhaust on chlorophyll fluorescence parameters of 4 tree species,Acer mono Malus bacata Pyrus ussuriensis and Acer ginnala were tested by means of fumigation in open top chamber.During fumigation test,the four plants were exposed to exhaust of the same concentration for different time span and same time span but different concentrations.The results showed that the chlorophyll fluorescence parameters (Fv/Fm、Fv/F₀、ΦPSII、qP ) of leaves of four plants decreased with the increase of fumigation time or the increase in concentration of the exhaust,whereas the qN increased.Great variations were found in the chlorophyll fluorescence parameters among the four species tested.Greatest responses were detected with the parameters of Malus bacata,intermediate with those of Acer mono and Pyrus ussuriensis and least with those of Acer ginnala.Evaluated by the shift of chlorophyll fluorescence parameters,the tolerance of the four tree species to automobile exhaust oriented pollution followed the order of Acer ginnala >Acer mono and Pyrus ussuriensis >Malus bacata.

Key words: Chlorophenols, Aerobic degradation, Anaerobic degradation, Bioderadability, Biotechnology

CLC Number:

X173

MA Shuhua, WANG Qingcheng, LI Yacang. Effects of automobile exhaust on chlorophyll fluorescence characters of four northern deciduous trees[J]. cje, 2005, (1): 15-20.

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