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以长白山阔叶—红松林主要树种为材料 ,盆栽于模拟自然光照和人工调节CO2 浓度4 0 0 μmol/mol、 70 0 μmol/mol下两个生长季节 ,高浓度CO2 下生长的 8种供试树种光合速度比对照组的幼树提高 2 9 4 0 %～ 58 39%。通过对高浓度CO2 下幼树光合作用动态变化的研究 ,发现经长期在高浓度CO2 下生长的供试 8个树种均表现出随时间的延长树木叶片光合速度失去原有在高浓度CO2 下出现的光合优势
Taking the main tree species of broad-leaved-Korean pine forest in Changbai Mountain as materials, potted plants were grown in two growth seasons of simulated natural light and artificial CO2 concentration of 400 μmol / mol and 70 μmol / mol and high concentration of CO2 The photosynthetic rate of tree species increased by 2940% to 583% compared with that of the control group. Through the study on the dynamic changes of photosynthesis of young saplings under high CO2 concentration, it was found that all the eight tested long-term high-CO2 cultivars showed that the photosynthetic rate of the tree leaves lost their original appearance under high CO2 Photosynthetic advantages