[Effects of elevated ozone on Pinus armandii growth: a simulation study with open-top chamber].
By using open-top chamber (OTC) and the techniques of dendrochronology, this paper studied the growth of Pinus armandii under elevated ozone, and explored the evolution dynamics and adaptation mechanisms of typical forest ecosystems to ozone enrichment. Elevated ozone inhibited the stem growth of P. armandii significantly, with the annual growth of the stem length and diameter reduced by 35.0% and 12.9%, respectively. The annual growth of tree-ring width and the annual ring cells number decreased by 11.5% and 54.1%, respectively, but no significant change was observed in the diameter of tracheid. At regional scale, the fluctuation of ozone concentration showed significant correlation with the variation of local vegetation growth (NDVI).
College of Forestry, Shenyang Agricultural University, Shenyang 110866, China. liucf898@163.com
Chang-Fu
CF
Liu
College of Forestry, Shenyang Agricultural University, Shenyang 110866, China.
Chen
C
Liu
State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China.
Xing-Yuan
XY
He
College of Life Science, Liaoning University, Shenyang 110036, China.
Ya-Nan
YN
Ruan
State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China.
Sheng
S
Xu
College of Forestry, Shenyang Agricultural University, Shenyang 110866, China.
Zhen-Ju
ZJ
Chen
State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China.
Jun-Jie
JJ
Peng
State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China.
Teng
T
Li
D000393:Air Pollutants / Q000494:pharmacology*; D001272:Atmosphere / Q000032:analysis*; D003198:Computer Simulation; D010126:Ozone / Q000032:analysis* / Q000494:pharmacology; D028223:Pinus / Q000254:growth & development* / Q000378:metabolism
D000393:Air Pollutants; D010126:Ozone