[Ecophysiological response of Pinus koraiensis seedlings to elevated CO2].
Studies on the ecophysiological response of Pinus koraiensis seedlings were conducted in open-top chambers which were controlled with CO2 concentration of about 500 and 700 mumol.mol-1. The result shows that there were different responses in net photosynthetic rate and stomatal conductance at high CO2(500 and 700 mumol.mol-1) and ambient CO2 concentrations. Under 500 mumol.mol-1 CO2, the carboxylase activity of RuBP was the highest, the photosynthesis showed "up-ward", the average daily net CO2 assimilation was the greatest, and the contents of chlorophyll and soluble sugars were the highest. While under 700 mumol.mol-1 CO2, the photosynthesis showed "down-ward" and was lower than that of the control, and the enzyme activity and the contents of substances were the lowest.
Han
S
S
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016. hansj@iae.syb.ac.cn
Zhou
Y
Y
Wang
C
C
Zhang
J
J
Zou
C
C
D050260:Carbohydrate Metabolism; D002245:Carbon Dioxide / Q000378:metabolism*; D002734:Chlorophyll / Q000378:metabolism; D017753:Ecosystem; D010788:Photosynthesis / Q000502:physiology; D028223:Pinus / Q000502:physiology*; D012995:Solubility
D002734:Chlorophyll; D002245:Carbon Dioxide