叶片结构的水力学特性对植物生理功能影响的研究进展

龚容, 高琼

Research progress in the effects of leaf hydraulic characteristics on plant physiological functions

GONG Rong,GAO Qiong

表1 叶脉网络功能性状指标体系

Table 1 An index system for leaf venation functional traits

叶脉结构指标 Index of leaf vein structure 叶脉系统功能 Vein system function 叶脉直径 Vein diameter 机械支持 Mechanical support (+) 物质运输 Matter transport (+) 虫害防御 Defense of insect damage (+) 导水率 Hydraulic conductance (+) 栓塞脆弱性 Vulnerable to embolism (-) 叶脉密度 Vein density 物质运输 Matter transport (+) 机械支持 Mechanical support (+) 虫害防御 Defense of insect damage (+) 气孔密度 Stomatal density (+) 气孔导度 Stomatal conductance (+) 导水率 Hydraulic conductance (+) 气体交换速率 Rate of gas exchange (+) 抗旱能力 Tolerance of drought (+) 叶脉网络构建成本 Costs to venation networks (-) 叶脉闭合度 Loopiness of veins 导水路径 Water pathways (+) 虫害防御 Defense of insect damage (+) 叶脉间距 Distance between veins 物质运输 Matter transport (-) 碳、水通量 carbon and water fluxes (-) 叶脉分级 Vein hierarchy 次脉密度 Minor vein density (+) 叶脉网络构建成本 Costs to venation networks (+)