摘要:在卧龙自然保护区,按海拔梯度选择了 4 个异型柳分布地点(2350 m、2700 m、3150 m 和 3530 m) ,对各研究地点异型柳进 行了叶片光合、CO 2 扩散导度( 气孔 导度( g s ) 和叶肉细胞导度( g m ) ) 、啄 13 C、氮素以及比叶面积( SLA) 等参数的测量,以期揭示该 植物叶片功能性状及功能性状间关系的海拔响应情况。 结果表明:随着海拔的升高,大气温度和压强的降低,异型柳的叶片单 位面积氮含量( N area ) 、最大羧化速率( V cmax ) 和最大净光合速率( A max
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