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本文通过对不同立地、不同年龄段长白落叶松净光合速率与呼吸速率的测定 ,测定出了长白落叶松净光合速率和呼吸速率 ,以及长白落叶松净光合速率的日进程与季节进程。通过对比试验测定 ,得出长白落叶松以 10年生净同化率最高 ,值为 :0 .30 51mgCO2 m- 2 s- 1,四大林场中以哈尔滨林场的长白落叶松净同化率最高 ,值为 0 .1335mgCO2 m- 2 s- 1。长白落叶松CO2 补偿点为 130vpm ,光呼吸值为 4 0vpm
In this paper, the net photosynthetic rate and respiration rate of Larix olgensis at different habitats and ages were measured to determine the daily and seasonal changes of net photosynthetic rate and respiration rate of Larix olgensis and the net photosynthetic rate of Larix olgensis. The results showed that the net assimilation rate of Larix olgensis was the highest at 10-year-old, with the value of 0.3051 mgCO2 m-2 s-1. The net assimilation rate of Larix olgensis was the highest among the four forest farms, 0 .1335 mgCO2 m-2 s-1. Larix olgensis CO2 compensation point of 130vpm, light respiration value of 40vpm