上海地区151种绿化植物固碳释氧能力的研究

Carbon Fixation and Oxygen Production of 151 Plants in Shanghai

为了在城市绿化中能充分发挥植物固碳释氧的生态功能,对上海151种植物进行了光合速率的测定。结果表明:气孔导度、叶片温度、胞间CO2浓度等为影响光合速率的主要因子;垂柳、木芙蓉和醉鱼草等植物的固碳释氧能力较强(固碳值大于12 g/m2),而大部分槭属植物的固碳释氧能力较弱(固碳值小于4 g/m2)。

In order to obtain the most ecological functions of carbon fixation and oxygen production, the photosynthesis velocities of 151 plants in Shanghai were measured. On the basis of the measurement, carbon fixation and oxygen production ability was calculated. The result indicated that stomatic conductivity（Cond）, leaf temperature （Tl） and internal CO2 concentration （Ci） are the major factors that influence photosynthesis. The final outcomes proved that weeping willows, cotton-roses and buddleias have stronger carbon fixation and oxygen production ability （the carbon fixation is more than 12 g/m^2） , while most Acers do not function as well as them（less than 4 g/m^2）.