Through analyzing the various position leaves character of 3 ages bamboo, including net photosynthetic rate, light respiratory rate, dark respiratory rate, CO2 compensation point and light compensation point, in five-years-old forest during different growing shoot stages in stated-own forestry farm of Nanjin, results showed that leaves had vigorous physiological function during prosperity stage of growing shoot. Net photosynthetic rate was higher, light respiratory rate, dark respiratory rate, CO2 compensation point and light compensation point were lower, the photosynthetic coefficients was larger.2-year bamboo and 3-year bamboo had stronger photosynthetic ability.Different photosynthetic and respiratory indexes of various position leaves were not consistent, but in generally, middle leaf had stronger assimilation ability.
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